I'm getting ready to put ported and shaved 5.3 heads (with LS1-sized valves) on my 99 Z28 along with a stock GM 2002 ZO6 camshaft. The heads DO have dual-valvesprings that are made for .600 lift cams. Will my stock pushrods be OK with this setup or do I need to throw down for some hardened ones? I've heard both ways from LSx racers around here, and I wanted to see what some of you guys that have experience building and racing these engines had to say about it. Thanks, Paul

 

Hell no, get some strong ones from comp for $98. You WILL break your stock ones in a very short amount of time...

 

the stock pushrods suck and if the heads are milled the valvetrain geometry might be off from stock

 

yeah with milled heads id see if u can get somebody to check proper length. might need some 6.350s or something depending on how much they are milled

 

Before you buy any pushrods, get an adjustable length PR checker and verify your required length with your desired lifter preload factored in.

..... Hey Phoenix.... I hope you mean 7.350's..... LOL

 

yeah, 7.350. its been along day