'77 Vette engine rebuild?????
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Plains Ga.
'77 Vette engine rebuild?????
I have a friend that has a stock '77 Vette with a 350 and auto trans. He wants to rebuild both items. I would like to know what the CF member recommend to get this engine to a 275 hp to a 300 hp level.
I am going to be doing the removal of both items, but I only want to address the engine now.The engine runs ok, but is weak as a puppy.
I don't remember the '77 model having much HP. Please give any help you can.
Thanks,
JTHVETTE
I am going to be doing the removal of both items, but I only want to address the engine now.The engine runs ok, but is weak as a puppy.
I don't remember the '77 model having much HP. Please give any help you can.
Thanks,
JTHVETTE
Burning Brakes
Joined: Nov 2000
Posts: 896
Likes: 0
From: Lafayette, Indiana
St. Jude Donor '05-'08
Originally Posted by JTHVETTE
I have a friend that has a stock '77 Vette with a 350 and auto trans. He wants to rebuild both items. I would like to know what the CF member recommend to get this engine to a 275 hp to a 300 hp level.
I am going to be doing the removal of both items, but I only want to address the engine now.The engine runs ok, but is weak as a puppy.
I don't remember the '77 model having much HP. Please give any help you can.
Thanks,
JTHVETTE
I am going to be doing the removal of both items, but I only want to address the engine now.The engine runs ok, but is weak as a puppy.
I don't remember the '77 model having much HP. Please give any help you can.
Thanks,
JTHVETTE
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Engine should be stated- L-82 or L-48, both need better ex. See if it has dual ex. & see:
http://www.corvettefaq.com/c3/ganeyexhaust.htm
L-48 badly needs more cam, while the L-82 can make that level w/ ex. & perf. setup & tuning. Better heads rec. for both.
http://www.corvettefaq.com/c3/ganeyexhaust.htm
L-48 badly needs more cam, while the L-82 can make that level w/ ex. & perf. setup & tuning. Better heads rec. for both.
Drifting
Joined: Nov 2002
Posts: 1,665
Likes: 1
From: Ontario
I dyno'd 240rwhp with my 77 L-48 with the following mods and a badly worn clutch:
-Comp Cams H268 cam & (obviously) new lifters.
-Weiand 8004 intake manifold.
-Hooker Competition Headers part number 2456HKR.
-True dual 2.5" exhaust with high flow cats and Magnaflow mufflers.
-Original QJet with primary rods 2 sizes smaller (richer) than stock and richer secondary rods.
-Recurved my ignition timing per Lars paper.
Now I have a brand new clutch but I still cannot easily spin my tires from a standstill. Once I get new heads I expect to be able to do so. I will then hang my 882's on the wall of my shop where they really belong.
-Comp Cams H268 cam & (obviously) new lifters.
-Weiand 8004 intake manifold.
-Hooker Competition Headers part number 2456HKR.
-True dual 2.5" exhaust with high flow cats and Magnaflow mufflers.
-Original QJet with primary rods 2 sizes smaller (richer) than stock and richer secondary rods.
-Recurved my ignition timing per Lars paper.
Now I have a brand new clutch but I still cannot easily spin my tires from a standstill. Once I get new heads I expect to be able to do so. I will then hang my 882's on the wall of my shop where they really belong.
Drifting
Joined: Feb 2005
Posts: 1,583
Likes: 5
From: Richardson Tx.
"I have a friend that has a stock '77 Vette with a 350 and auto trans. He wants to rebuild both items. I would like to know what the CF member recommend to get this engine to a 275 hp to a 300 hp level."
I am in the same position and have the same goals as yourself. I have started my rebuild with some advice from the machine shop that is doing some of the work. Total Engine rebuild :
I am going with the $500 Vortec heads, the GM Cam that is found in the 330HP GM crate motor- Original Q-Jet and new Manifold. I will probably upgrade the exhaust as well. This should put me around 300HP...
I am in the same position and have the same goals as yourself. I have started my rebuild with some advice from the machine shop that is doing some of the work. Total Engine rebuild :
I am going with the $500 Vortec heads, the GM Cam that is found in the 330HP GM crate motor- Original Q-Jet and new Manifold. I will probably upgrade the exhaust as well. This should put me around 300HP...
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Plains Ga.
'77 Vette 350 rebuild ?????
Yes, I will do the complete rebuild of this engine. I am looking for CF members that have already done this or are in the process of doing a rebuild like this one. I find that asking for information from expericenced
people is worth it's weght in gold. I would like to get as much HP out of this engine and it still work with a slightly higher stall converter . The Vette needs to be somewhat a cruiser with some punch. If the HP level
goes to 350 or 375 range ,that's ok to. I'm not that familiar with the specs. on this engine, yet. What info. I need is what cam,lifters, rockers,compression ratio of pistons,timing chain set,heads and etc.
I realize some of this info. has been posted. I just wanted to make sure everyone knew what I am looking for.
I've had a lot more experience with the LT1's. I just finished a engine and auto. trans. swap in our '96 Vette coupe.
What I'm asking for is info. specific to this Vette, without having to do a lot of digging for the right combo. I would like to thank the members for info. already given. Please keep it coming!
Thanks,
JTHVETTE
people is worth it's weght in gold. I would like to get as much HP out of this engine and it still work with a slightly higher stall converter . The Vette needs to be somewhat a cruiser with some punch. If the HP level
goes to 350 or 375 range ,that's ok to. I'm not that familiar with the specs. on this engine, yet. What info. I need is what cam,lifters, rockers,compression ratio of pistons,timing chain set,heads and etc.
I realize some of this info. has been posted. I just wanted to make sure everyone knew what I am looking for.
I've had a lot more experience with the LT1's. I just finished a engine and auto. trans. swap in our '96 Vette coupe.
What I'm asking for is info. specific to this Vette, without having to do a lot of digging for the right combo. I would like to thank the members for info. already given. Please keep it coming!
Thanks,
JTHVETTE
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