super-ss

What is max bore for LQ9 ?
I want (4.155) bore * (4) stroke

SweetS10V8

iTrader: (4)

Dont we all?!?!? Get out your check book if you want 4.125

Max bore on a an LQ9 is 4.060"ish

super-ss

I see 4.125" ??

SweetS10V8

iTrader: (4)

4.125 is the standard bore typically used to get 4.155, 4.125" + .030 over = 4.155.

RHS has a new block that 4.160" and will take a 4.600" stroke that I saw at PRI. 500ci!!

super-ss

I want max bore in LQ9 , thanks

GMCtrk

iTrader: (23)

4.03" to be safe typically

SweetS10V8

iTrader: (4)

Have whatever block you use sonic tested.

Honestly boring to the max is a complete waist of a good block. YOu should run the least amount of bore that you can. That way if you engine dies, you can still bore it and rebuild.

THe difference between standard bore and max bore is probably less than 5-10hp

goober35

iTrader: (1)

4.060 is a max bore. But it has to be tested. Just spend the extra cash on a stroker crank and get a 408.

PREDATOR-Z

LSx block

89LS1RS

iTrader: (1)

thats the way to go

DVS99TRANS

iTrader: (7)

^^^ yup, LSX. 408 is the biggest you want to safely go with it if you plan on making power.

super-ss

I want use the LQ9 block with 4.125 bore with LS7 Cylinder heads .

Is it safely ???

JP

Are you reading the thread?

1CAMWNDR

iTrader: (21)

It has been done before but with the water jackets filled all the way to the top of the deck (no coolant) and on a race only engine. Mine is 4.07" and is half filled (up to the water pump ports). IF your block can take a 4.06" or 4.07" bore that is as far as I'd go IF you are willing to half fill it.

the_merv

iTrader: (88)

Not going to happen unless you sleve it.

.030 over safely, .060 over and have it checked.