Forged Internals

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Dec 9, 2007 | 10:18 PM

#21

SoCalTTZ06

Thread Starter

Racer

Joined: Aug 2007

Posts: 257

Likes: 0

From: Sherman Oaks California

Quote:

Originally Posted by RJW

You may be able to get a decent deal from callies...one of their speed packs, if you want to go stroked.

Includes crank, rods, pistons, rings, bearings and all nicely balanced...just add a honed block and instant 383 or 402

What specs 4.125 on the crankshaft to get that 402 on the ls6 ???? I am having a hard time finding a displacement chart.

Dec 9, 2007 | 10:50 PM

#22

RJW

Melting Slicks

Joined: Nov 2004

Posts: 2,715

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From: Tinker till it blows... then back it off a notch, maybe!!

St. Jude Donor '08

Quote:

Originally Posted by SoCalTTZ06

What specs 4.125 on the crankshaft to get that 402 on the ls6 ???? I am having a hard time finding a displacement chart.

I don't know that too many would go to a 4.125" stroke with a stock Ls1/Ls6 bore which would result in a 395 cubic inch motor.

Most like to keep the bore/stroke square or slightly under/over square.

Common displacements are 4" stroke x 3.905" bore = 383 ci

or with an LS2 block, 4" stroke and 4" bore = 402 ci

a sleeved or lsx block bored to 4.125" with a 4" srtoke = 427 ci

An interresting combo would be a 4.125" bore with a stock ls1/6 crank which would be a 387 ci and probably have good high rev capabilities.

Lots of options...some just cost more than others.

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