I need the block, head and plenum/runner info. I need to know stuff like stock deck height of block. Head flow numbers, chamber CC's, and how many CFM the stock intake and runners will flow. I know you need casting numbers to be able to get exact numbers. I Just figured all engines from the same year would have the same specs. It's and 87. I did some google searches for specs but all I come up with is HP,TQ, and Comp ratio stuff. If it's not possible without the casting codes just let me know.




TIA

 

I can help with a few of those things.

Stock block deck height is 9.025", same as every small block Chevy ever made. Typically the pistons will sit at 9.00", .025" in the hole at TDC.

L98 heads have nominally 64cc chambers (yours can vary due to slight production line differences). Pistons in 87 were ~12cc dished units for compression in the low 9s.

Head flow.... depends who you ask. In the TPI or TBI section of this board there is a sticky thread with flow numbers taken by different people on different heads. Figure around ~200 CFM peak on the intake, ~150 CFM peak on the exhaust, roughly. That's about all the stock TPI runners will flow, too. But again, it depends who did the testing and whose numbers you believe.

 

Thanks for the info.