yeah yeah it sucks. i started the car and let it warm up backed it out of the garage. heard a pop and immediately clack clack clack. i was like otta that doesnt sound too good. i knew i broke a valvespring but discovered the bent valve after i towed it to my shop and bumped it over. oh well guess its about time for heads anyway.

 

What springs were you using and how many miles were on them?

 

Manley's are the best in my opinion..Ferrea's are ok i guess, but weaker by far..I have seen many of TEA heads come in to me with bent ferrea valves..with no p to v issues either..just from driving..I have seen a stock cam car with ferrea's bend.go with manley's or at the very least REV's...I want milidon to make an ls1 mega flow valve..but i dunno if it will happen.


Carter

 

What he said... I'd like to know what springs.

 

wanna say round 10k miles on them and they are manley. supposed to be rated up to a 625 lift i think and i only have a 558. i think their design sucks. it has an inner sripng in addition to the outer regular spring. i think the inner spring rubs the outer one, weakens it and then breaks it after a while. this is the 6th valvespring ive broken and i dont rag the **** out of my car either. i drive it the way its supposed to and dont rev it up and hit the revlimiter either. i never messed up anything with the others that have broke cause they still remained compressed but this time was different

 

i personally think comp 918 are the way to go and dont ask me why i got manleys

 

I haven't heard of a failure with Patriot Gold's yet.