beat me to it!

you install those 403's with a stock valve train, you're motor is strait fucked, son. you're shit is over. beat. done. finished. done deal. crane has a cheap valve spring/titanium retainer kit for future reference.

 

im sorry it had to end this way.....



(just save this and read it 2 weeks after the install is complete when you are buying a new motor....)

 

i havent done ti yet but i guess it was good that i posted before id di it lol thanks

 

I ran 403s for like a month with stock valve train no problems.And my friend has been running them for like three months no problems.I was told only if your going past 8 grand to upgrade valve train

 

wut you mean you ran them you dont use them any more or you still use them you just had them for a month