Stock 2V Pistons - Will they hold up?

[53BigDog]

I have a 97 GT with Ported and Polished Multi-angle Valve Job PI Heads and Cushman Motorsport (Jim's) Stage 2.5 Cams & Springs

During this rebuild I am looking at staying N/A and raising my CR to about 10.5:1. I am sticking with the Steel Crank, have read I should upgrade the stock rods/beams to H Beams.

Now looking at the pistons. The Stock is a 15cc in a 49.77cc chamber and I would love to upgrade to an 9cc-11cc but wanted to know if my 15cc pistons would first yeild the higher compression and second stand up to the higher compression? Not knowing the condition of the block yet I will probably bore a bit to clean it up. 110K on the block.

 

[Superhereaux]

with a slightly higher compression ratio you're really not putting too much additional stress on the pistons so i think you'll be ok

putting PI heads on an older mustang will yeild a higher comp ratio, but by how much i couldn't say

 

[CobraRed_96_GT]

with a slightly higher compression ratio you're really not putting too much additional stress on the pistons so i think you'll be ok

putting PI heads on an older mustang will yeild a higher comp ratio, but by how much i couldn't say

about 10.5:1 compression, maybe 10.4 if it's got some miles on it. But his heads are ported, which denotes less compression due to machining.

 

[Greenbird]

Stock pistons are 10.5cc dish, and the heads will be 46cc or less. Your already going to have 10.5:1 CR. I would use the stock short block up to ~6200 rpm, and when you want more, then build a forged short block for a power adder.