C3 Vette Registry - The Best Resource on the Net for C3 Vettes! C3 Vette
Forums -> C3 Engines
Not Logged In! Login or Register!  Users Online: 18 / Help 
Features  Find C3 Parts on ebay in only 2 or 3 clicks!  | Add YOUR C3 to the Registry

Supporting Vendors
Volunteer Vette Products
VetteBookStore.com
Mid America Motorworks
CorvetteClothing.com
Bair's Corvettes

C3 of the Month
None Current
Enter Yours Today!
Online C3 Show
13
C3s are Registered

Vanity Plates
70 LT1
CapTen
Featured Links
Chevrolet Corvette Restoration Guide


Buy Now
GM Corvette 1963-82 (Chilton's Total Car Care Repair Manuals) (Paperback)
GM Corvette 1963-82 (Chilton's Total Car Care Repair Manuals) (Paperback)


Corvette by the Numbers
Corvette by the Numbers


The Corvette Dynasty (Hardcover)
The Corvette Dynasty (Hardcover)


Corvette: America's Sports Car Yesterday, Today, Tomorrow (Hardcover)
Corvette: America's Sports Car Yesterday, Today, Tomorrow (Hardcover)



| Hide Signatures and Profile Pics

 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1] 2  
11/9/12 12:30am - Original Message: 'Re-manufactured Engine vs my stock engine'
Vetto1974
Former Member
- Send Private Message


Hayward, CA - USA

Vette(s):
I have 1974 Corvette, with white exterior and silver interior. It has 350.

Joined: 10/9/2012
Posts: 30
Hi I have been contemplating in regards to my engine. I came across with this company in California, west coast engines, www.westcoastengines.com. The remanufactured crate engines. I am looking at 350 ci, 325 hp. The price, $2,499 plus shipping and core of $300. They are using vortec heads. It seems a good price. Is worth buying remanufactured engine? Or, it is better to rebuild my engine? Do you think by rebuilding my engine, will I get to 325 hp? Need help to decide.

|UPDATED|11/8/2012 10:30:31 PM (AZT)|/UPDATED|


____________________________________
Desert StormDesert Shield Veteran Semper Fi
 Reply Reply  Quote Reply w/Quote
 
Support C3VR!
Suport our advertisers
11/9/12 8:35am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
VikingVette
Former Member
- Send Private Message


Greer, SC - USA

Vette(s):
1978 Black with Viking mural painted under hood AM/FM/CB radio, T-top and a 2013 Cyber Gray Grand Sport Coupe, 2LT for my daily driver

Joined: 3/13/2012
Posts: 264
I can only tell you what I decided.  I have a '78 and when I bought it, I could tell the compression just was not what it probably was when it was new.  A lot of people are very concerned about "numbers matching".  I have a plain, black '78 and it will NEVER be a high dollar car, except to ME!!!!  I went the route of a new crate motor.  I went with ZZ4 and have issues with the valve seals leaking (I am still chasing that issue).  I had thought about having the original engine rebuilt, because the L-82 was a 4 bolt main.  The new crate engine was just under $4,000.  Until this valve seal issue came to light, I had been happy with my decision and if I had to make that decision agian, I would go the same route....a new crate motor, but do more research this time.  I am probably one of the dumbest ones on C3VR, so I am sure that others will speak up and give you better opinions on which way to go.
 
Peace out 


____________________________________
Warning: The surgeon general has declared that it is NOT unhealthy to smoke your competition AND I just discovered that my corvette is a hybred.  It burns gas and rubber! 
 Reply Reply  Quote Reply w/Quote
11/9/12 9:22am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
knotacare
Former Member
- Send Private Message


Newark, DE - USA

Vette(s):
1968 Conv, 454HO,500HP-600TQ, TKO-600,3:70 HD rear,hotrod air, custom paint & suspension,1973 Ruby Red,T-top, 383 Stroker, TK)-500,frame off restro, 1977 Yellow (1 of 51 ) L-48 4 spd, 99% original.

Joined: 7/26/2004
Posts: 453
It's very easy to get 300-350 hp out of a stock 350. I personally go with the engine I already have first as long as it's OK. Find a good machine shop & talk to them then make your decision. 
It's alot easier to upgrade your original engine than install a different engine. 
AlanBeer


____________________________________
                                               
 Reply Reply  Quote Reply w/Quote
11/9/12 12:08pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Gunslinger
Former Member
- Send Private Message


Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
What I did in one of my cars (not a Vette) was install a GM Performance 350HO/330hp engine.  It already has Vortec heads and no core to exchange...I sold the old engine which helps mitigate some of the costs.

Of course the crate engine came with no intake but there's many, many options for that.  In my case, I went for Edelbrock EFI, but induction options are no problems...from basic to wild.

You really need to decide exactly what you want out of your engine, actual use and performance wise...even more than the actual horsepower rating.  Base your choices on that and you'll be much happier than simply buying an engine baed on ratings alone.


____________________________________
Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

Click image for larger pic
 Reply Reply  Quote Reply w/Quote
11/9/12 1:53pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
eldredjames Lifetime Member
Lifetime Member
- Send Private Message


Temple City, CA - USA

Vette(s):
1969 Daytona Yellow. 350 / Automatic.

Joined: 10/3/2010
Posts: 361
My Vette came with a ZZ4 already installed.  It is rated at 355 HP and 405 Torque.  I don't know if the headers on it add more HP but it has enough power for me.  I haven't had any issues with the engine, just the installation:  Tach doesn't work and the gas tank was rusted out.

http://www.chevroletperformance.com/EngineShowcase/index.jsp?engId=ZZ4350&engine=ZZ4%20350&sku=12499712&engCat=sb


____________________________________

 Reply Reply  Quote Reply w/Quote
11/9/12 5:53pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Vetto1974
Former Member
- Send Private Message


Hayward, CA - USA

Vette(s):
I have 1974 Corvette, with white exterior and silver interior. It has 350.

Joined: 10/9/2012
Posts: 30
Hi, Basically, I just want to drive my car on weekend. I don't want it to be superjet. I want it to be reliable and yet, the power is there when needed. I don't want to go crazy on the engine because it might turn out that I need to change my tranny, then the rear end. I am not ready for that yet..lol I would like to thank you for all the suggestions. With that said, I think I will just work on the engine that I have now. I called a shop today and he kind a mentioned that crate engines are good and also some of them are really bad for they are not assembled in US. Some are using par products than others. He also suggest to work on my engine just because it is 1974 and want to maintained matching number. I talked to a shop that will help me rebuild my engine. He is charging $1900 on labor. This does not include any porting of the heads or the block itself. He is thinking of just getting a re-build kit for the lower block, changing the rings, maybe pistons, if needed, crank shaft. We will send out the head to get it ported at around ($300) to a bigger hole and maybe changing the springs. I am thiking of putting the following parts: cam (camshaft), intake (edelbrock performer 2101), carb (holley 750 cfm), lifters, rockers, harmonic balancer, flexplates, and gear drive and headers, simple, like hooker, full lenght or shorty. I asked around in regards to MSD box, coils, and distribrutor..they said it is not needed for the engine is just mildy modified, if it considered modified. So, what do you think of the set up? How about MSD? Let me know. Thank you

|UPDATED|11/9/2012 3:53:19 PM (AZT)|/UPDATED|


____________________________________
Desert StormDesert Shield Veteran Semper Fi
 Reply Reply  Quote Reply w/Quote
11/10/12 10:28am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
danascar
Standard Member
- Send Private Message


Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Hers's the distributor I went with on my mildly modified motor.....
Works well and has the tach drive and is priced right....good luck.


|UPDATED|11/10/2012 8:28:46 AM (AZT)|/UPDATED|


____________________________________
http://www.c3vr.com/member_uploads/14001_14100/14006/IMG_256920168147411r.jpg


 
Dan T
 

 Reply Reply  Quote Reply w/Quote
11/10/12 11:27pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
kendo2
Former Member
- Send Private Message


Ormond Beach, FL - USA

Vette(s):
77 coupe, yellow, auto, L series, A/C, T top, Grey leather interior. It is about 75% & matching #'s. The miles are 117K & intend on restoring bit by bit to enjoy Cruises & rallies in Florida , & maybe some shows ?

Joined: 7/28/2012
Posts: 19
Have you thought about contacting Summit Racing or JEGS about your engine rebuild. Their prices are good & they have all sorts of engine upgrades. i.e. cams, heads,etc. Go to the internet & Google their web sites, as it may help you decide on certain accessories for your project.
 Reply Reply  Quote Reply w/Quote
11/11/12 4:13am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Vetto1974
Former Member
- Send Private Message


Hayward, CA - USA

Vette(s):
I have 1974 Corvette, with white exterior and silver interior. It has 350.

Joined: 10/9/2012
Posts: 30
Hi, thank for your suggestion. Yes I have in contact with summit racing. I talked to their tech a couple of times. In one instance, the guy suggested 650 cfm for my carb and the other time they suggested 750 cfm. What should I use? Also, edelbrock or holley?

____________________________________
Desert StormDesert Shield Veteran Semper Fi
 Reply Reply  Quote Reply w/Quote
11/11/12 11:09am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Gunslinger
Former Member
- Send Private Message


Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
Unless you have a built-up engine a 600 or 650 cfm carburetor is all you need.  Any normal, not too built up 350 would be hard pressed to use up 600 or 650 cfm anyway and anything bigger can cause a hesitation at take off unless it's highly tuned in and of itself.

As far as brand goes, I like the Edelbrocks as they're easily adjustable, hold their adjustments and are probably a bit better on fuel economy.  If you're looking for pure performance then maybe Holley might be the way to go, but that's still arguable as there's simply so many variables in any particular engine.  

My own feeling that I would go with an Edelbrock EPS intake with an Edelbrock Performer 600 carb or maybe an Edlebrock AVS 650 carb.  The EPS intake is designed strictly for square-bore carbs and has somewhat better horsepower and torque numbers than their Performer 2101 intake.  That choice would likely require a low mount air cleaner though...not a big deal.


____________________________________
Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

Click image for larger pic
 Reply Reply  Quote Reply w/Quote
11/12/12 1:27am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
daveo76
Standard Member
- Send Private Message


Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 831
I had the same debate a couple of years ago with my engine.  I narrowed it down to three choices:

1) crate motor
2) buy an already rebuilt motor from a local engine builder or machine shop (there are always SB chevy's advertised on Craigslist -- do your homework)
3) rebuild my original block

After considerable debate and lots of research I went #3.  Found a local machinist, talked with him at length, checked references, etc.  He did the block and set up a pair of used Vortec heads for me, I did the ass'y.  I'm glad I went the way I did since now I still have my original block (and heads, but they're not installed) and I was able to build my own engine which is a big one for me in the pride department (first time).  But the crate motor option is a good one that is worth considering.  GMPP seems to be the best, but I think there are other good ones out there.  I was considering S&S Engines out of Spokane.  Just do your homework before going that way.  Make sure the warranty is up to snuff. 

FYI - not sure I saved any money by rebuilding my existing block.....still happy though.  


____________________________________

 

1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
 Reply Reply  Quote Reply w/Quote
11/12/12 2:08pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
fp_vetter72 Lifetime Member
Lifetime Member
- Send Private Message


COPPERAS COVE, TX - USA

Vette(s):
1972 corvette stingray convertible 2007 coupe

Joined: 7/6/2002
Posts: 412
I put a 350 crate in mine, 3 year 50,000 mile warrenty for less than  $1500. I purchased the engine from Jegs. The car has the origanal componets on it except intake which is an edelbrock performer great performance and has been very dependible. I still have the origanl motor and will go through it one of these days.

____________________________________

Click for larger view
 Reply Reply  Quote Reply w/Quote
11/12/12 4:22pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Vetto1974
Former Member
- Send Private Message


Hayward, CA - USA

Vette(s):
I have 1974 Corvette, with white exterior and silver interior. It has 350.

Joined: 10/9/2012
Posts: 30
Hi, You bought a long block from Jegs and you used all your external parts, such as, water pump, oil pump, pullies, starter, and so on, except for the intake? And slapped it in on the block?

____________________________________
Desert StormDesert Shield Veteran Semper Fi
 Reply Reply  Quote Reply w/Quote
11/18/12 5:31pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
tonytheroofer
Former Member
- Send Private Message


Rochester, NY - USA

Vette(s):
1980 L- 82 fully restored and upgraded.

Joined: 6/12/2012
Posts: 95
You can buy a brand new crate block with heads for 1500 .. I would get a carb to pan 290hp crate from jegs for like 2500 ,, your never gonna beat that deal with starter water pump fuel pump carb .. It really is about the most affordable way to do a engine replacement ,, 

____________________________________
1980 , ZZ430 , 3.92 rear , 700R4 2400 stall NEW EZ EFI 
 Reply Reply  Quote Reply w/Quote
12/6/12 12:36pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Andy61
Former Member
- Send Private Message


, - Australia

Vette(s):
1969 convertible blown 350 4 speed manual

Joined: 11/20/2012
Posts: 15

I am going the build a new one from the start. this way i get exactly what I need and I know what parts have gone into the engine. It is much more expensive and time consuming. I have spent around $6500 not counting my labour.



|UPDATED|12/6/2012 10:36:03 AM (AZT)|/UPDATED|


____________________________________
  
 Reply Reply  Quote Reply w/Quote
12/6/12 12:54pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Vetto1974
Former Member
- Send Private Message


Hayward, CA - USA

Vette(s):
I have 1974 Corvette, with white exterior and silver interior. It has 350.

Joined: 10/9/2012
Posts: 30
I am still doing a lot of research. Finally down to little details. Question: How can I tell my compression is low and I need to overall my lower block. My plan is now is to have my cylinder heads work on and rebuilt, change the intake, carb, cam, rollers, lifters. But not really doing anything to my lower block. The car runs, but, with 189 or 190 bhp, I know that theres is nothing in it. What do you think?

____________________________________
Desert StormDesert Shield Veteran Semper Fi
 Reply Reply  Quote Reply w/Quote
12/6/12 4:45pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Andy61
Former Member
- Send Private Message


, - Australia

Vette(s):
1969 convertible blown 350 4 speed manual

Joined: 11/20/2012
Posts: 15
A compression test gauge or the more accurate option, a cylinder leak down test, I have found that by only doing the top end  of an engine, you have the potential for bottom end failure.

|UPDATED|12/6/2012 2:45:46 PM (AZT)|/UPDATED|


____________________________________
  
 Reply Reply  Quote Reply w/Quote
12/12/12 12:41pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
Vetto1974
Former Member
- Send Private Message


Hayward, CA - USA

Vette(s):
I have 1974 Corvette, with white exterior and silver interior. It has 350.

Joined: 10/9/2012
Posts: 30
Hi. Is it easy to install the engine yourself after you had it worked on (block and heads)? I am not a handy man so, it might different in my case. I also ask around about vortec heads. They told me because of the clearance issue, vortec heads, and vortec compatible intake will not work. What is your thoughts on this? How much hp is now your engine puts out? What ratios that your block and heads? Thank you

____________________________________
Desert StormDesert Shield Veteran Semper Fi
 Reply Reply  Quote Reply w/Quote
12/14/12 10:03pm - Reply: 'Re: Re-manufactured Engine vs my stock engine'
dads2vette Lifetime Member
Lifetime Member
- Send Private Message


Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1038
I had this same thought process a couple of yrs ago. I went with a crate motor because I am keeping the car so It's gonna be worth the same to me (and my daughter) no matter how original it is and by the time I sent the original out for machine work it would have brought the price up considerably.
 
As far as installing it yourself...if it's not an exact match you might wind up running into problems with wiring and vacuum lines.  I ordered a crate motor from Phoenix engines and got a good deal.  Unfortunately, by the time I was in a position to install it I had to move and lost my shop(garage) in the process.  I hired a mechanic to install the motor for me and he screwed it up.  On my next project car, if it needs a new motor, I'll go to a local speed shop and get a motor from them.  Some around here will give a break on installation as well.
 
My suggestion is to go with someone local...go to a car show or cruise night and get some suggestions.  Folks in the hobby are always willing to help.  Even if it costs a little more it's ussually easier dealing with locals.


____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


 Reply Reply  Quote Reply w/Quote
12/15/12 2:53am - Reply: 'Re: Re-manufactured Engine vs my stock engine'
daveo76
Standard Member
- Send Private Message


Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 831
Vetto1974 said:  I also ask around about vortec heads. They told me because of the clearance issue, vortec heads, and vortec compatible intake will not work. What is your thoughts on this? How much hp is now your engine puts out? What ratios that your block and heads? Thank you


Vortec heads fit under the stock hoods, you just have to use the correct manifold and air cleaner.  I used a GM manifold similar to this one except mine is a spread bore (bigger rear bores for the giant secondaries of a Q-jet carb)

http://www.ebay.com/itm/GM-Vortec-Dual-Plane-Intake-Manifold-Chevy-SBC-283-327-350-Fits-Vortec-Heads-/330832827129?hash=item4d072c52f9&item=330832827129&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

For the air cleaner, there are a number of options.  I used a 2.5", 12" Dia. K&N.  It's a tight fit under there, but they definitely do fit.  I'd have a big hole in my hood now if they didn't!  As for numbers, I estimate somewhere between 300 - 350 HP, based on comparing my specs for the specs on similar crate motors.  My compression ratio is about 9.4:1.  Have to use premium or at least mid-grade gas.  

There are a number of issues that need to be resolved (even beyond clearance) if you do go with Vortec heads.  You can search on this site for "Vortec" and come up with many of them.  Feel free to PM me if you want more info.  


____________________________________

 

1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
 Reply Reply  Quote Reply w/Quote
 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1] 2  
 Forums -> C3 Engines
(Moderator: Adam Wartell, Norsky, Adams' Apple)
 

 
Official C3 Vette Registry Community:
Home | Forums | Email | Who's Online | Clubs | Events | Member Stats

Other Official C3 Vette Registry Areas:
Members | Research | Shop | My Account | About C3VR
 

Corvette is a registered trademark of the General Motors Corporation(GM) & Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise noted) and does not claim or imply that Chevrolet or GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated with, sponsored or supported by GM.  Copyright/trademark/sales mark infringements are not intended, or implied and are in fact used to support GM, Chevrolet and Corvette

Official C3 Vette Registry content is Copyright 2001-2017, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS

Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 30