compression question

[BB67FB]

Looking at a rebuild kit that will give 9.06:1 compression ratio with 63cc heads, but I will be using 61cc heads. Any idea what compression ratio I will be looking at? Thanks!

 

[ForceFed70]

Looking at a rebuild kit that will give 9.06:1 compression ratio with 63cc heads, but I will be using 61cc heads. Any idea what compression ratio I will be looking at? Thanks!

You're going to have to tell us what engine if you want an accurate reply.

I can tell you that it won't make a huge difference. Your ratio will probably still be under 9.2:1

 

[BB67FB]

sorry, its a 351 windsor.

 

[D.Hearne]

2ccs in a 351 will raise the ratio by about one tenth of a point.

 

[SadbutTrue]

Looking at a rebuild kit that will give 9.06:1 compression ratio with 63cc heads, but I will be using 61cc heads. Any idea what compression ratio I will be looking at? Thanks!

Probably 9.2:1, as others have said.