F-Body LT1
Thread Starter
Racer
Joined: Jul 2002
Posts: 437
Likes: 0
From: Rancho Santa Margarita Ca
F-Body LT1
Is it a bad Idea to replace the Corvette Lt1 with a F-Body Lt1. After replaceing the cam with a Hot Cam I took it out and spun a bearing :( Low on funds and found a 40,000 mile known good F-bbody Lt1 out of a 95 for 300 with exchange.
Racer
Joined: Dec 2001
Posts: 388
Likes: 1
From: Shakedown Street,Buffalo N.Y.
Re: F-Body LT1 (keekster)
Other than the F-Bods having 2 bolt mains, there aren't really any other differences. Mine has 110k on the ticker and has never been taken apart, and the engine gets put through it's paces every time i drive it :D
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: F-Body LT1 (keekster)
Also the F-body's didn't have guide plates. Not that it matters, the Vette guide plates don't come anywhere near touching the pushrod so they are completely useless. If you don't mind the two bolt block, go for it.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: F-Body LT1 (keekster)
it also gives you 2 luxuries...
1) the ability to rebuild the Corvette LT1 in your spare time.
2) rebuilding the Fbody LT1 and installing splayed 4 bolts.
take your pick.
there is a MINOR cam profile difference that I saw on a chart once...
1) the ability to rebuild the Corvette LT1 in your spare time.
2) rebuilding the Fbody LT1 and installing splayed 4 bolts.
take your pick.
there is a MINOR cam profile difference that I saw on a chart once...
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: F-Body LT1 (TreyZ28)
Not always. You never know exactly what the weak link is until it fails. A friend of mine managed to break a crankshaft with a car that had some pocket ported heads, a crappy cam, and headers. The car probably didn't even make 330 hp. That had to be a factory flaw and I still don't understand exactly how it happened. Another friend broke the input shaft on his T-56 while his rear end survived perfectly.
These things shouldn't have happened but they did. Your crank MAY break first, but then again that main bolt COULD stretch too. Unfortunately we can't know what is the weak part until it breaks. Personally I'll go with overkill any day. 2 bolts are probably fine, but 4 bolts are better.
I just wish I had the money to build the motor I want.... I'd see exactly how much money could be spent on top quality components.
These things shouldn't have happened but they did. Your crank MAY break first, but then again that main bolt COULD stretch too. Unfortunately we can't know what is the weak part until it breaks. Personally I'll go with overkill any day. 2 bolts are probably fine, but 4 bolts are better.
I just wish I had the money to build the motor I want.... I'd see exactly how much money could be spent on top quality components.
Le Mans Master
Joined: Mar 2000
Posts: 8,950
Likes: 4
From: Lafayette LA
Re: F-Body LT1 (keekster)
Is it a bad Idea to replace the Corvette Lt1 with a F-Body Lt1. After replaceing the cam with a Hot Cam I took it out and spun a bearing :( Low on funds and found a 40,000 mile known good F-bbody Lt1 out of a 95 for 300 with exchange.
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Thread Starter
Racer
Joined: Jul 2002
Posts: 437
Likes: 0
From: Rancho Santa Margarita Ca
Re: F-Body LT1 (Nathan Plemons)
I just wish I had the money to build the motor I want.... I'd see exactly how much money could be spent on top quality components.
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: F-Body LT1 (keekster)
There's absolutely nothing wrong with the LT1 from an F-body. There may be a slight change in cam profile, but that varies with the Vettes too, depending on year. The accessories are also disimilar, but you'd probably use your old accessories anyway.
Aside from that, the 2 bolt main is a big deal to some, but a 2 bolt splayed to 4 is supposedly stronger than a standard 4-bolt.
A bone stock LT1 pushed my nearly 3800lb (driver not included) atuomatic '97 T/A to a 14.0 at 98.6mph, so I don't believe that they're down on power too much.
Chris
Aside from that, the 2 bolt main is a big deal to some, but a 2 bolt splayed to 4 is supposedly stronger than a standard 4-bolt.
A bone stock LT1 pushed my nearly 3800lb (driver not included) atuomatic '97 T/A to a 14.0 at 98.6mph, so I don't believe that they're down on power too much.
Chris
