whats the bore and stroke of a LO3 TBI
or tell me every thing you can about the LO3

i tryed searching here and on the net, i didnt find anything thing to be useful

 

A lot of the info is on the Tech Data on the homepage at www.Thirdgen.org

The bore is 3.735" and the stroke is 3.48.

The heads are 58cc chambers with crappy swirl style intake ports.

The valves, AFAIK, are 1.84"/1.5"

The stock intake is aluminum dual plane.

The TBI bores are 1-11/16" (I don't know the factory PPH of the injectors.)

Exhaust consists of iron manifolds into a 2-1/4" y-pipe through a 2-1/4" cat, and 2-1/4" all the way back to the muffler.

That's all of the basics I can think of that aren't on the home page.

 

Compression is 9.3:1, uses a roller cam and lifters. Stock net horsepower is 170 @ 4400 and torque is 255 @ 2400. Some stock intakes are cast iorn. Responds like any regular old small block when it comes to mods. Should have 40 lb/hr injectors. Base timing is 0*. The link below will give you much more info.

http://www.goingfaster.com/spo/spo_t...y_central.html

 

does anyone know the thickness of cylinder walls ?

 

i dont know the max thickness, but i do know the max over bore is .060"