GM Forged crank from older small block

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Oct 28, 2007 | 03:16 PM

johnnyb

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From: Greenville, PA

GM Forged crank from older small block

I have a GM forged crank that i believe is from an older 350. Should it work in my lt1?

Oct 28, 2007 | 03:20 PM

mdacton

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you need the main seal adapter from moroso, balance the crank internally, new flexplate...don't think you can make it work with six speed noone makes the flywheel if I remember

Oct 28, 2007 | 03:21 PM

johnnyb

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it is a 3.48" GM crank p/n 14088532

Oct 28, 2007 | 03:23 PM

johnnyb

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From: Greenville, PA

Quote:

Originally Posted by mdacton

you need the main seal adapter from moroso, balance the crank internally, new flexplate...don't think you can make it work with six speed noone makes the flywheel if I remember

damn... i also found it was from an 86-88 with main/rod jounal sizes 2.45/2.10 and is a Forged One Piece rear main seal.

Oct 28, 2007 | 03:28 PM

mdacton

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Quote:

Originally Posted by johnnyb

damn... i also found it was from an 86-88 with main/rod jounal sizes 2.45/2.10 and is a Forged One Piece rear main seal.

If its a 1pc. seal then it will work fine.......I can't look the number up right now

Oct 28, 2007 | 03:40 PM

johnnyb

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Quote:

Originally Posted by mdacton

If its a 1pc. seal then it will work fine.......I can't look the number up right now

is it a big deal to get it internally balanced though?

Oct 28, 2007 | 04:02 PM

marshall93z

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From: Mooresville, NC

That's a very good crank as far as handling horsepower goes! I remember Brady used to run one back in the day on his twin turbo LT1!

Oct 28, 2007 | 05:27 PM

johnnyb

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From: Greenville, PA

Quote:

Originally Posted by marshall93z

That's a very good crank as far as handling horsepower goes! I remember Brady used to run one back in the day on his twin turbo LT1!

That's what i like to hear

I got the crank, forged rods, forged mahle pistons, and a block that was freshly machined and bored to 355 for $1K. i think that was a pretty good deal