Guys milling my 799 heads on my truck. Its a 5.3 and trying to get as much possible out of her.. trying to raise my compression to 10.5+.. its a l33 engine so its got flat top pistoms comes with 9.9 stock.. anyways i need pushrods but since all the work will b at my cousins shop (two hours away from my house )next weekend it will b impossible to use the pushrod checker and order some.. so is there a formula i can use to determine what size i will need? Truck has stock pushrods im assuming 7.4.. anyone?? All help will b appreciated!!!

 

a quick guess would be 7.375 the lifter will eat some...but would still check it with a push rod length tool.

 

Is there any sort of calculator? I dont mind buying two sets i just want to male sure i have the rt ones when i switch them out.. since i wont have acxess to get them that day and i need to come back home so it needs to b put back together..

 

Just get a checker like said above

 

my heads are mill .030 also on ls7 lifters- on a flat top- piston, im running 7.4's but im switching to 7.350's

 

I have a checker and ill use it but i need to have the pushrods available because i wont b able to order them and wait for them baxause i need to drive back hom.. so shut it sloxcab.. lol..i guess ill get some 7.375 just incase.. im on stock lifters and flat top piston also..

 

I say 7.375 and u will right in the ball park

 

Any particular ones i should order? Hardened offcourse.. any brand?

 

Just get whatever you can get the best deal on including shipping imo.

Yeah Hardened chromemoly pushrods, we know what you mean.

Texas speed, Comp, Thunder Racing, manley,SLP etc, your pick.

 

so after some more investigating i came to find out my stock pushrods r 7.380, when i did the cam i should have gone 7.4 but i didnt. does that mean i can reuse my stock pushrods??

if im wrong can someone pls correct me?