I was looking at cams for my TA(mods in sig) and was suggested that a rev kit would help protect the valvetrain to allow me to spin the motor past 6k. Maybe up to 6500-6800 even. Any thoughts, opinions etc.. will be greatly appreciated.

P.S. will the AFR rev kit work with Comp R lifters? Any body know how much the AFR kits cost? Thanks!

 

Rev kit not needed for those RPM's.
I also have not had good luck with AFR kit, it puts metal in the oil from the springs rubbing.

 

All you have to do is have the valvetrain designed correctly and it can spin well past the ECU's max RPM without problems.

Bret

 

 

If you are going to use a rev-kit the only one that does not put metal shavings in the oil like LR said, is the ISKY Hard Anodized plate kit. We run those in solid roller road race motors that see 2 seasons(40-70 hours) before rebuild and the plates come out looking great. The other option that I have used in the past is to install 2 .015" valve spring shims that will act like a torrington bearing and keep the spring from eating the plate.

 

I'd say don't get either of those, the rev kit or the Comp R lifters!

 

lifters were in the car when I bought it. No choice there. I was advised to get the AFR kit by the owner of LT1Motorsports on the westbank.

 

They want to sell something. Again,no need for a rev kit.

 

You should know better than to trust a shop on the westbank!

JK, but you really should avoid the rev kit. With a good valvetrain and cam, you won't need it.

 

heard that. Thanks fellas!

 

I've had good luck with my AFR rev kit assembled to AFR 190 heads. The high lift cam runs the hyd-lifters near the top of the keeper key. Possibly, the rev kit helps to load the lifted and retain it from releasing from the keeper key if valve float occurs. Does any aftermarket supplier make a deeper gm lifter key??? (383/ D1/ CM cam 231/ 240 .531/ .558" lift)