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Topic: How long to R and R big block

in Forum: C3 Engines


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How long to R and R big block (1/14)
 8/25/23 10:52am
C3Deacon
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Joined: 7/13/2019
Posts: 10

What is a fair amount of billable hours to remove and replace a big block engine from  '69?  Nothing is ever the same on this kind of procedure, but was curious as to a fair range of hours to "get er done". Has side pipes and headers and need to put in a new radiator".

Thanks in advance!  Terry

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Re: How long to R and R big block (2/14)
 8/25/23 11:08am
manchestersharkLifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.


Joined: 10/31/2007
Posts: 2376

Wow! That is a good question. A lot of contingencies are in the mix on that one. Any number of difficulties can come into play there. One thing leads to another. While I'm in here, let's do this! Well, let's do this too!. SO.... it's anybodies guess what will transpire. 



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Re: How long to R and R big block (3/14)
 8/25/23 6:56pm
F4GaryGold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.


Joined: 8/26/2006
Posts: 1399

I'd say 2 cases of good beer....



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Re: How long to R and R big block (4/14)
 8/27/23 1:19pm
my1stc3
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West Haven, CT - USA

Vette(s):
1968 Coupe L36


Joined: 5/3/2022
Posts: 34

C3Deacon said:

What is a fair amount of billable hours to remove and replace a big block engine from  '69?  Nothing is ever the same on this kind of procedure, but was curious as to a fair range of hours to "get er done". Has side pipes and headers and need to put in a new radiator".

Thanks in advance!  Terry

I removed mine by myself but after the rebuild plan on getting my grandsons to help reinstall in engine bay then I’ll take it from there

Re: How long to R and R big block (5/14)
 9/6/23 3:04pm
Steevo
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San Diego, CA - USA

Vette(s):
'73 L48 Coupe, 383, M20, A/C, Electric Windows. Matterhorn White Jet-Glo w/ Dark Blue interior. Rochester, Edelbrock, Blackjack Ceramics, Borlas w/ 2.5" mandrel X over, Cooper Cobras on both OEM Steel and Aluminum Wheels.


Joined: 11/10/2013
Posts: 51

Is it a manual transmission or automatic Terry? It took me an extra hour to rig the shifter mechanism when I converted over to an M20 from the TH400 on my '73 383. 

I've no BB experience, but working alone, it has taken me about 4 hrs to remove and 5 hrs to install a SB. Second R&R goes a little faster. Older Muncies have fewer driveshaft splines and that hung me up a while trying to carefully mate the block to it. Just one of the variables mentioned by others.

I thought this service manual would have estimated shop man-hours in it for certain jobs commonly done, but I couldn't find them. Maybe someone here who knows more about the manual will know where to look.

Hope this helps Terry.

Steve 



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Re: How long to R and R big block (6/14)
 9/6/23 5:24pm
manchestersharkLifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.


Joined: 10/31/2007
Posts: 2376

The manual will probably quote  "Flat Rate" time. Unless you do these every day, all the time, Flat Rate will not be a good indicator. Double it for a better rate. Don't know if they even use that rate anymore. 



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Re: How long to R and R big block (7/14)
 9/7/23 3:31pm
blu72
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Pasadena, MD - USA

Vette(s):
72 Coupe L48 4 sp Air Tilt Leather


Joined: 6/16/2004
Posts: 285

A huge project. The engine in / out is the easy part. It comes out a whole lot easier than back in, even with new parts. 

The rest of the car under the hood is a project in itself. Most of the other components are shot, so keep in mind the "while I'm in there" will kick in. Whatever you believe it will cost, double that and you'll be much closer......

I took my 350 out and back in with a very good friend / mechanic and it took a year. Not for the faint hearted.

If not already done, you'll want to replace for sure the underhood wiring harness, vacuum lines, and other deteriorating pieces to make it safe and reliable. 

Replacement parts are very iffy and a lot of them will disappoint you. I sent a lot back to the vendors because of shoddy appearance and quality. And most do not fit very well and even last at all. Electrical parts are the worst.

Being that said, it was a learning experience and a tremendous journey you might enjoy and be very proud of when back on the road. I certainly am!

Good luck and keep us in the loop as you move along. 

 

 



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72 Coupe L48 4sp
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Re: How long to R and R big block (8/14)
 9/20/23 11:31am
Sledboy
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, - Canada

Vette(s):
1973 L82 4speed


Joined: 10/13/2021
Posts: 3

I removed the engine in my 73 in 2 days by myself. Reinstalled it  in 4 days by myself when I was 65

So all depends on your experience. 

 

Re: How long to R and R big block (9/14)
 9/20/23 1:18pm
my1stc3
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West Haven, CT - USA

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1968 Coupe L36


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my1stc3 said:
C3Deacon said:

What is a fair amount of billable hours to remove and replace a big block engine from  '69?  Nothing is ever the same on this kind of procedure, but was curious as to a fair range of hours to "get er done". Has side pipes and headers and need to put in a new radiator".

Thanks in advance!  Terry

I removed mine by myself but after the rebuild plan on getting my grandsons to help reinstall in engine bay then I’ll take it from there


Reinstalled in body 3 hours, damn 68 and non removable  crossmember still in progress since this morning between work meetings by myself oh and on the floor at 63



|UPDATED|9/20/2023 11:18:26 AM (AZT)|/UPDATED|
Re: How long to R and R big block (10/14)
 9/20/23 8:52pm
blu72
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Pasadena, MD - USA

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72 Coupe L48 4 sp Air Tilt Leather


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I should add to my Post - a lot of other things were done in the year while replacing the 350. Engine bay was empty so dug into restoration.

Brake lines, fuel lines. all the damn vacuum lines, wiring harness, headlight and wiper door motors, AC hoses, front cross member that rots out, refurbish wiper motor, steering box, blower motor, exhaust system, AC evaporator, cooling hoses, sandblasted, cleaned a lot of parts and painted the engine bay and wiper door stuff. A lot of disintegrated stuff when you get down to it. 

So yeah, a year was not unexpected! 😊

 



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72 Coupe L48 4sp
Custom Blue/Silver/Pearl

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Re: How long to R and R big block (11/14)
 9/21/23 8:28am
manchestersharkLifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.


Joined: 10/31/2007
Posts: 2376

Good Morning,  I know the process. I did mine myself as well. Close to your age too. Maybe not in the detail you did, but the tyranny cross member was a pain! I was ignorant enough to finish it, and start on a couple more for the Love of the body style. Still doing a 75'. Being patient and enjoying the time. Never give up! I have no other vices. 



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Re: How long to R and R big block (12/14)
 9/28/23 12:18pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 862

I was under the impression that the removable crossmember was only in the automatic transmission cars. 

I removed and replaced a friend's '66 427 roadster in about a day each way. It would have probably been a little quicker if we had pulled the transmission along with the engine. It was a real bear putting it back in and getting it lined up with the clutch and throw-out bearing.

 

Using a leveler attachment along with the hoist makes it a lot easier. It's probably mandatory if you're going to do the engine and transmission together because you have to almost stand it on end to get it in. 



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1973 L-82 4 spd

Re: How long to R and R big block (13/14)
 9/28/23 12:20pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 862

Deleted duplicate post.



|UPDATED|9/28/2023 10:20:16 AM (AZT)|/UPDATED|


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Re: How long to R and R big block (14/14)
 9/28/23 3:43pm
my1stc3
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West Haven, CT - USA

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1968 Coupe L36


Joined: 5/3/2022
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my1stc3 said:
my1stc3 said:
C3Deacon said:

What is a fair amount of billable hours to remove and replace a big block engine from  '69?  Nothing is ever the same on this kind of procedure, but was curious as to a fair range of hours to "get er done". Has side pipes and headers and need to put in a new radiator".

Thanks in advance!  Terry

I removed mine by myself but after the rebuild plan on getting my grandsons to help reinstall in engine bay then I’ll take it from there


Reinstalled in body 3 hours, damn 68 and non removable  crossmember still in progress since this morning between work meetings by myself oh and on the floor at 63




Forgot to update finished last Wednesday then Thursday timing putting the hood back on but the transmission and non removable crossmember was no fun on ground by yourself, had wife press clutch pedal then slid right in so all in all 3 days 



|UPDATED|9/28/2023 1:43:19 PM (AZT)|/UPDATED|
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