1jfuddle

iTrader: (7)

A friend and I were talking about the feasability of building a high RPM (and possible boost) motor. We were thinking small stroke and big bore. If you took the crank from a 4.8 and the block from a 6.0 you would give birth to a 5.4 Is this possible and how high would you spin it? Or should we lay off the

PREDATOR-Z

https://ls1tech.com/forums/generation-iii-internal-engine/211170-destroked-ls1-questions.html
https://ls1tech.com/forums/generation-iii-internal-engine/111073-destroked-motor.html

For boost setups I could see why! but very, very expensive.

goober35

iTrader: (1)

Talk about no TQ. I have heard of a 5.7 going to 8k or are u wanting to go higher. The stock PCM has to be swapped if you want to go past 8k

ktmrider

A couple of folks have debated this in the Truck forum. The low RPM torque loss would be kinda bad in a big azz truck but a lighter vehicle might like it.
BigTex/Richard did some good research as far as the crank/piston/block offsets and sizing was concerned.
Try thread https://ls1tech.com/forums/showthrea...&highlight=327 as a starter or search the truck section using "327" or "stroker"

Bo White

iTrader: (59)

Not a problem building just use the 4.8 crank and rods and replacement 6.0 pistons. I have seen that combo as well and am interested in such combos on how they turn out.

Louis

iTrader: (7)

Valvetrain is the limiting factor here, not piston speed. If piston speed or ruling of a sanctioning body dictated low displacement, then go with a shorter stroke.