i run stock pushrods but our heads are diff.
You claim to have the oringinal heads from a vette which have a longer valve in them to make up the diff from the cams smaller base circle

if i was you i would run a 7.350 pushrod since your milling .040 off
Stock is almost 7.4 its like 7.39??

 

Ok, thanks for the tip. Yeah, the heads and cam came off a low mile '04 Z06. The cam is pretty small, but I'm not looking for a big gain there and I like my DD being nice and smooth, plus I plan on throwing a roots blower on here eventually and that cam should go nicely with it.

 

243 heads and a ls6 cam is a good combo for a smooth sleeper DD
i love my setup

 

^Yeah, my truck even looks just like yours. Is yours lowered at all or does it just have the leveling shackles on the rear?

 

its lowered 2.5/4 right now thats an old pic
That pic was 2/3

 

I'm looking to do the same thing and I plan on turboing mine.

I need zo6 cam, 243 heads milled .040 and a thin gasket? Any thing else that I missing?

Thanks

 

If I'm reading this right by milling the heads you lower the compression? If so then if your goals are to boost the motorthan it would be better to keep the stock 5.3 heads and mill them Down use a thin gasket and then boost?

Thanks

 

mill heads to gain compression or use a thin gasket to gain compression
Alot has to to do with combustion chamber size also on each diff LS head

 

What was your comp. ratio up to with the .040 mill and stock gasket?

 

idk my 243 heads have a 60.5cc chamber the stock 706 5.3 heads was 61.15
I had some valve work that ate up some cc's in my chamber they should have been 58cc IIRC