well, I am running 7.375 on a .040 gasket and a .050 mill , because of the base circle on my cam. If I was stock headed it would be a 7.425. What cam are you running? you really need a PR checker. my TR224 worked with a 7.4 on stock heads. Blackgmc runs a 7.4 also, on a .30 mill.

 

Lunati voodoo 60513.. 217/223 551/551 113 lsa.. and ues i do need a cheker its just that i really cant afford to check and then order do too time issues.. thats y i rather buy some and hope im cloae.. if i dont use them ill sell them..

 

https://ls1tech.com/forums/parts-cla...-part-out.html

https://ls1tech.com/forums/parts-cla...e-reduced.html

https://ls1tech.com/forums/parts-cla...s-7-375-a.html

https://ls1tech.com/forums/parts-cla...7-375-new.html

 

Beardown Z u r the man...

 

btw going .040 on the heads.. talked to richard and said that should b no problem on my heads.. should i go smaller on the pushrods? 7.350?

 

How worn are the valve seats?

 

Wish I could answer that but I don't know how. Heads have 80 k miles on them.. 799 heads ithey came with my l33 engine from dealer. They have never been worked on so idk ..

 

I hope you don't have the issues I'm having, i'm trying to get the FAST LSXRT manifold to fit and it doesn't look good

 

What type of heads u have? Milled?

 

Quick ? when checking push rod length do you need a solid lift in there?