I am putting together plans for a ground up engine build for an 02 Z28. I am currently running an STS kit @ 5psi. on an LS6 block and the STS will be carried on to the project motor.

I was thinking of using the 6.0L iron block for a foundation. Any input on this block and it's capabilities would be much appreciated! I saw an LS iron block on GM Parts Direct p/n 12572808 9.240" deck height, 3.98" bore, 6 bolt main, nodular cap material, standard LS crankshaft journal diameter. wet oiling, 1 piece seal, 4.00" max stock, 500 max horsepower, street usage, LQ9 origin

Would this be an acceptable block for this build up? Plans are looking like to stroke it, run around 7-10 psi. boost level, no No2, no sure baout cam, intake, valvetrain and specs. on bottom end. Just trying to take this one part at a time to ensure a proper build.

Any input would excellent and appreciated.

 

An aluminum block will handle that power no problem, don't add the weight of an iron block.

 

Iron block will be fine $600. A better choice might be a l92 block $1200 with l92 heads $174 each (330 cfm!)