Topic: 383 install begins
in Forum: C3 Engines
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Good Afternoon All, Good to great choice on carb,however you might consider a 1406/7 (750 CFM stock Chevy Q-Jets are 750's) electric choke or without choke.
Next before you place onto intake have someone who rebuilds carb's to check out the settings of floats,cleanliness,etc.,there is not enough room on this forum for me to relate the problems I have found in the last few years to the point that the Edelbrock engineers and I are on first name basis.The old selling statement of "take it out of the box and put onto the engine and fire it up and go",is no longer true,however they are the greatest performance carb when set up,and you will be changing rods and jets for your area and desired performance.
As far as Edelbrock fuel pump, you will not like trying to fit it for fuel inlet for a Vette unless you are familiar with rotating the bottom of the pump or have a drawer full of expensive fittings. The quick fix is to use either a BBC OEM pump or a '72 Chevy 1/2 ton truck OEM fuel pump with all the lines in and out you would need..
I have been down this road too many times.I have built many(14 todate) 383 strokers and one for a fellow C3VR member VETTER BOB..Save the money for the Edelbrock pump and send it back for the money.If you just have to have one I have one or two here that were taken off and changed to the big BOTTOM BBC/'72 truck pump and no need of a pressure regulator as the Edelbrock operate at same pressure as a Q-Jet
. Have a great day today and a better one tomorrow..
Sal C nosal1
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Case, I tried to see if there is a number on your heads to no avail. I think they are Patriots,however can not tell by photo of the CC value of intake runners(look like 200 cc) or the exhaust cc value.Another question is what size intake/exhaust valves (assuming 2.02/1.60/1.65)and if so would support a very high lift cam. What,if you don't mind saying, is the total lift of the cam and manufacture..I use a special grind for my 383's which is made for me by Melling..It is a matter of curiosity,also if your valves are big enough and the intake runners are at least 180 cc,you will have more than enough flow for a 750 cfm carb and would be at the precipice of 650 cfm carb,in other word starve the engine with a 650 cfm.
Did you mention what exhaust system you will be going to use?
Contemplating you may use Ceramic coated headers,remember when you fire engine to season cam lifters at constant 2200 -2500 rpm for 15-22 minutes that the guarantee will be forfeited if started with ceramic coated headers etc.. Coating will destruct while it's at that temp during break-in procedure.
Good Luck and looks great
nosal1 said:
Case, I tried to see if there is a number on your heads to no avail. I think they are Patriots,however can not tell by photo of the CC value of intake runners(look like 200 cc) or the exhaust cc value.Another question is what size intake/exhaust valves (assuming 2.02/1.60/1.65)and if so would support a very high lift cam. What,if you don't mind saying, is the total lift of the cam and manufacture..I use a special grind for my 383's which is made for me by Melling..It is a matter of curiosity,also if your valves are big enough and the intake runners are at least 180 cc,you will have more than enough flow for a 750 cfm carb and would be at the precipice of 650 cfm carb,in other word starve the engine with a 650 cfm.
Did you mention what exhaust system you will be going to use?
Contemplating you may use Ceramic coated headers,remember when you fire engine to season cam lifters at constant 2200 -2500 rpm for 15-22 minutes that the guarantee will be forfeited if started with ceramic coated headers etc.. Coating will destruct while it's at that temp during break-in procedure.
Good Luck and looks great
Wow Sal, that's a lot of questions! But that's OK. The engine was bought used (just broken in really) with a few unknowns such as compression ratio, I have recently found out who built the engine and will hopefully be able to fill in the blanks. I've heard it running on a test stand before I bought it and would estimate about 10:1 compression from doing the math. Cam is a Comp 279TH7 with 227/241 @.050 and .479/.465 lift on a 107 LSA. This will be a real torquer and not a high rpm screamer so the 650CFM will be plenty. Heads are Patriot 190 cc intake runners with 64cc chambers. 2.02/1/60 valves with 1.254 springs. 1.5 ratio roller tip rockers. The bottom end is an Eagle cast steel crank with SIR rods and ARP bolts. Exhaust is Hedman 1 5/8 long tube headers into 2.5 inch pipes with crossover and Magnaflow mufflers. Hope that answers all your questions. Engine and tranny were just dropped into the car today.
|UPDATED|11/26/2013 8:20:41 PM (AZT)|/UPDATED|
2012101154624r.jpg)

Build Date: May 7, 1975. 383 w/267 RWHP/310 RWTQ
Awesome! So they got it in there with both the fuel pump and the P/S pump installed? I'm amazed - didn't even try mine with the P/S and we ended up pulling the fuel pump when it was hanging there in mid-air over the car. Your shop is a master in finesse with the hoist!
daveo76 said: Awesome! So they got it in there with both the fuel pump and the P/S pump installed? I'm amazed - didn't even try mine with the P/S and we ended up pulling the fuel pump when it was hanging there in mid-air over the car. Your shop is a master in finesse with the hoist!
You should see some of the work they've done in that shop over the years. It'd make your head spin. That's why I went there.
2012101154624r.jpg)

Build Date: May 7, 1975. 383 w/267 RWHP/310 RWTQ

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Case75 said: It'd make your head spin....
No thanx....my head spins enough as it is....



They're doin a fine job!! Should be up and runnin in no time!

Joel Adams
C3VR Lifetime Member #56
My Link
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Good news! The car is done. Just have to arrange to pick it up some time next week.
|UPDATED|11/27/2013 5:49:17 AM (AZT)|/UPDATED|
Update: Was supposed to get it today; had an enclosed trailer lined up but weather is bad and don't want to make the 200 mile return trip. I'll have to wait a couple of more weeks until I have another chance to go.
|UPDATED|11/27/2013 5:49:17 AM (AZT)|/UPDATED|
2012101154624r.jpg)

Build Date: May 7, 1975. 383 w/267 RWHP/310 RWTQ
Case you have the patience of Job and great sense as it would not be a fun drive in bad weather.We are encountering high winds of 25-40 mph here in Florida and I wouldn't want to trailer my BBQue pit!!
I wanted to ask if I didn't before,what rear gears do you have and transmission.Also do you still have the OEM leaf spring holding up rear carrier?? I have seen some horrific things happen with 2:73-3:08 rear gears and OEM springs. The cam you have in the engine has not the torque that my special grind has and the length of the band of same,however you should produce a great deal of torque and HP,albeit I do not have the cam card of your cam and can not run it through my computer program to determine TQ/HP however it will be healthy enough to eat some gears and break an OEM spring,depending how big your foot is and how far you can extend your leg!!!!
In any event I wish you the best and keep on keepin' on.
Have a great day........Sal C
in Forum: C3 Engines
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