WTB: LT1 4-bolt Corvette Block
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Registered User
Joined: Jun 2002
Posts: 1,519
From: Westland, MI
WTB: LT1 4-bolt Corvette Block
Like the title says, I'm looking for a LT1 Corvette block with the parallel 4-bolt mains from the factory. Good condition, little or no overbore preferred.
Registered User
Joined: Oct 2003
Posts: 477
From: Georgetown, IL
Re: WTB: LT1 4-bolt Corvette Block
JW, but why do you want a 4 bolt factory block? a Splayed 4 bolt main is alot stronger, since the outter bolts are angle drilled, to anchor into more "meat" of the block...Just thought I'd toss that out on the table for ya....I hav ea 2blt, prepped for a 355 and can meet in Kokomo, Indiana...
Thread Starter
Registered User
Joined: Jun 2002
Posts: 1,519
From: Westland, MI
Re: WTB: LT1 4-bolt Corvette Block
Originally Posted by SStrokerAce
4 bolt Parallel main caps are more expensive since the machining is much more labor intense but the main cap does get a bigger footprint due to the fact that a stepped cap that is used on a 2 bolt conversion has a clearance under the outer part of the cap.
Originally Posted by Mindgame
Bret,
Good point on the 4-bolt parallel setup. I think its the best way to go on these factory blocks. Just don't have the beef on the thrust sides like the aftermarket blocks so pulling with a splayed bolt doesn't help things IMO.
Good point on the 4-bolt parallel setup. I think its the best way to go on these factory blocks. Just don't have the beef on the thrust sides like the aftermarket blocks so pulling with a splayed bolt doesn't help things IMO.
Originally Posted by SStrokerAce
The best place to put the outer bolts on a 4 bolt conversion is the best place in that block for them. Splayed stuff works great on blocks with material out there for them, but sometimes straight studs are the way to go.
Originally Posted by rskrause
The guy who does my block work swears that straight bolt caps are better on modern production castings.
Originally Posted by Injuneer
George Baxter made 1,125flywheel HP using a STOCK straight 4-bolt LT1 block.... no fill. Of course he upgraded the caps and studs, but the block was untouched.
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