Mike96z

iTrader: (78)

I am thinkin of getting the 02 Z06 Cam and the base circle is .050" smaller. I have 2 options. Using a 7.450" pushrod over a 7.400" or milling the heads .025 - .050" and using 7.425" - 7.400" pushrods.

I was leaning toward the 7.400" pushrod and .050 milled head, but should I flat mill it or angle mill it? Another question is what would the compression ratio be with stock head gaskets and stock length pushrods. I was thinking around 11.1:1 but I could be wrong. If someone could help and maybe give me the exact compression or an estimate Id appreciate it. Its a 98 LS1 with 241 LS1 heads. Stock for now.

Will run 93 octane, i was running 12.1:1 on my LT1 heads with no detonation.

Mike96z

iTrader: (78)

Ok, im alittle confused. Seems the LS6 cam is .050" in difference in base circle, meaning youd have to make up .050". People are getting away with 7.400" pushrods and most are using 7.425" pushrods. Wouldnt a 7.450" pushrod be a more exact fit and give you the most power you can get out of it? Id be going a diff route, itd be the diff between an .030" mill to a .050" mill. .030" would work but would .050" be best if the compression is lowe enough? I seen some LS6 cam kits and they all come with 7.450" pushrods.

Mike96z

iTrader: (78)

so would that be a .025" diff on each side, instead of a 7.450" pushrod Id need 7.425" pushrod or mill .025"-.030"?

Mike96z

iTrader: (78)

I see it as an overall .050" difference and being .025" difference on each side as illustrated, meaning a 7.450" pushrod would actually be .025" too long on each side.