Do I need ARP head bolts for a 50trim upgrade.

[1QUICK4]

Deffinatly get the ARPs or you will be pushing coolant. Your valve springs should be ok with the 272s but If you beat on your motor like alot of us do it probably wouldn't be a bad idea to get some Crowers. Especially if you have 100K+ miles.

[john]

As stated before, you do not need them but you should get them. On my 6 bolt with a 50 trim, I ran stock head bolts and had no problem at 22psi. I blew my HG later at 18 psi and threw in the ARPs and a stock HG with out copperspray. I have not had any related problems since. You can do it now when you have time or later when you blow your HG. If it were me, I would do it now as you are pulling the cams off anyway.

[Onefast99gsx]

Thanks 92tsi--- I found the ARP for about $80 at Summit Racing. Looks like i'll be getting them from there. I gotta get Prothane mounts too. They seem to be the cheapest on them as well.