Eagle balanced 383 stroker kit won't work in an LT1? - Team Camaro Tech
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post #1 of 8 (permalink) Old Sep 22nd, 04, 12:27 AM Thread Starter
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i was flipping thru my new Jeg's catalog- formulating a wish list for my LT1 build this winter- and noticed the Eagle balanced 383 stroker setup for a late model 1 piece rear seal block, but there is a little * next to it that leads you to a footnote that says that it won't work with an LT1.
i can't help but wonder why it won't work? the LT1 uses the same crank, rods, and pistons as any one piece rear seal 350 block, so it should work.
or do they also sell an "LT1 only" kit for a few hundred $$$ more that they want to try to sell you?

you don't plan sincerity.
you have to make it up on the spot.

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post #2 of 8 (permalink) Old Sep 22nd, 04, 04:49 AM
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Could have to do with the flywheels. LT1-T56s use a funky pull off clutch. If its auto, I can think of no reason why a balanced one-piece kit would not work in a LT1.
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post #3 of 8 (permalink) Old Sep 22nd, 04, 04:54 AM
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Or possibly a balance issue due to the LT1 not using a standard balancer up front.Seems like it could be fixed with a re-balance though. My Callies crank for my 383 LT1 is not LT1 specific.

Jody


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post #4 of 8 (permalink) Old Sep 22nd, 04, 09:31 AM Thread Starter
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the LT1 does have a standard balancer up front- it just has a serp belt groove machined into it. but i guess it could be because it is balanced with a regular balancer on it, but any good balance job won't touch the flywheel or balancer.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #5 of 8 (permalink) Old Sep 22nd, 04, 10:51 AM
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Quote:
Originally posted by novaderrik:
the LT1 does have a standard balancer up front- it just has a serp belt groove machined into it. but i guess it could be because it is balanced with a regular balancer on it, but any good balance job won't touch the flywheel or balancer.
Mine sure doesn't. I guess if you put the two pieces together it looks similar, other than the serpentine pulley part. But it has just a little stub.

I was guessing on why it's listed as different, I have no idea. I do know that EVERY balance job I've had done has wanted the balancer along with the other parts.

Jody


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post #6 of 8 (permalink) Old Sep 22nd, 04, 05:08 PM
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The one piece crank flywheels are not neutral balance like the two piece ones.This must be taken into account when balancing the later engines.
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post #7 of 8 (permalink) Old Sep 23rd, 04, 12:18 AM Thread Starter
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yeah, you need A balancer and A flywheel or flexplate when balancing, but if you have to grind on either of them to get it to balance, you have other issues- at least that's the way my machinist explained it to me when i got my 355 all machined up 4 years ago. since i put the engine together and installed it in the Nova, i swapped from an auto with the flexplate that was used for the balance job to a 4 speed with a brand new GM flywheel, and it doesn't vibrate all the way up to 7200 rpm. that flexplate ended up in my 92 Caprice cop car when it's stock flexplate broke, and is now in my 88 S10 with that very same Caprice TBI 350- and it doesn't vibrate on that engine.
maybe i might get the Eagle 383 kit and a brand new LT1 balancer, and get the balance checked out locally- which is probably a good idea, anyways, given the care that some people put into mass produced items these days...

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #8 of 8 (permalink) Old Sep 23rd, 04, 02:20 PM
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Could be the position of the cam-shaft. Is an LT1 camshaft the same distance away from the crank as a standard small block?

Dave
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