ss in progress

Will a set of PRC 5.3 stage 2.5 heads milled to 59cc work on a stock lower end? Please help me out on this. I need to know if it would clear the piston without cutting them.

garygnu

are you talking about a 346 lower end ?they will work,what cam are you using?

ss in progress

Yes with a stock lower end and the cam is a t-rex 242/248-609/612-110 lsa

garygnu

you will need to fly cut the pistons.get a custom cam that don't need fly cutting.

ss in progress

I know the cam is massive so if I got a smaller duration it would clear?

01ssreda4

iTrader: (96)

Cam size determines if it will clear or not. Trex won't I'm sure, unless you run a thicker head gasket.

Sales4@Texas-Speed

iTrader: (4)

You will definately need to flycut if you use that T-rex cam. Going to a smaller duration cam would give you more clearance making that possible. But if you want a 59cc chamber you will have to step down to something around the size of a 228/228 or so.

ss in progress

Thanks guys I'm just gonna sell that cam and buy one the will work. I'm a big fan of the ms3 cam from TSP. I wonder if that will work

Sales4@Texas-Speed

iTrader: (4)

I don't think it will since the heads are milled like that. The MS3 is still a large cam for the stock cubic inch motor, you would need to flycut to use it as well. The biggest cam I think you could safely fit in there would be something like our 228R.

01ssreda4

iTrader: (96)

Not quite sure how many times he is gonna have to hear that to understand we aren't lying to him.

jimbo98z

iTrader: (3)

I would get a hold of one of the guys on here and have a cam spec'd to your heads and bottom end.

BlackScreaminMachine

iTrader: (17)

Right from the source, go get'em!

ss in progress

Thanks guys I'm just redoin my stock heads with porting and complete rebuild with custom cam.