I want to trade a GSR crank for a LS crank. The gsr has 20,xxx miles on it, and no scarring or marks on the journals. If anyone has a LS crank let me know either PM or email.

Thanks, Jeff

 

is the gsr crank shorter in stroke? or is it longer?

 

Longer in stroke, it would slightly destroke the LS block and giving it a slightly better r/s ratio of about 1.58:1 to the LS's 1.54:1...only a 2% difference. I know someone has an LS crank laying around.

Thanks, Jeff


[Modified by boosted hybrid, 7:19 PM 9/16/2002]

 

i have a 99 si crank...or is that too much of a de-stroke?

 

why would you want to do this? just curious... i dunno much about this


[Modified by AzN_Flava, 12:05 AM 9/17/2002]

 

Actually the GSR is a shorter stroke crank (I think thats what you meant to say after reading the rest of what you stated)

Also, there ae numerous reasons one would want to do this.

1. the GSR crank will indeed yield a better rod to stroke ratio.
2. the GSR crank uses a narrower rod and rod bearing which is much better for higher RPM redline.
3. the GSR crank is lighter which again is better for higher RPMs as well as revving quicker.
4. the GSR crank has also been balanced to a higher precision from the factory due to the higher redline.

The GSR crank is actually harder to find than the LS crank due to the number produced, and this is and cost is the main reason allot of people just build LS VTECs rather than spending the money on a GSR motor to begin with.

 

You will need custom rods to use a B16 crank in the GSR/LS/B20 block due to the higher deck height of the block. Although this can be done if you have the money you end up with smaller motor that revs higher but does not produce as much torque which is what you really want in a street car.

 

Damn, resurrect from the dead. This thread is 6 years old.