FRDnemesis

iTrader: (19)

I have heard of guys running the T-REX cam on stock cylinder heads (242/248 608/612 110 LSA) and doing fine(no clearance issues). So here is my question.


I have a set of Patriot 64cc cylinder heads with 2.02/1.60 valves with Springs good enough for .650. When I bought these heads, I also purchase the COMP CAM XER 232/238 .595/.605 112+2 LSA.


Will the T-REX run with no clearance issues and which cam will be better(make more power) with and without nitrous?

Thanks,
Jeff

Gunnar@Patriot

iTrader: (20)

Our heads will be at factory deck height. The difference in the PTV is going to be in the larger diameter valves. The stock LS1 heads have a 66.67cc combustion chamber.

calongo_SS

iTrader: (7)

There is a chance that neither one of those cams will clear with valves that big. I would say that the t-rex will deffinatley not clear, and the other one needs to be checked.

FRDnemesis

iTrader: (19)

Gunnar, These are the LQ9's that Force Fed had shaved down to 64cc. Does that make any difference?

Gunnar@Patriot

iTrader: (20)

Unless they did a set like that, these should be the LS6 style heads that we CNC a 64cc chamber in. So it is highly unlikely that these were a 72cc head that was milled.

FRDnemesis

iTrader: (19)

The number stamped on the cylinder heads is 2828. I remember you told me before that the number is only actually an order number or something.

Jeff

Gunnar@Patriot

iTrader: (20)

According to the invoice number, those should be the 64cc, 2.02"/1.60" LS6 style heads. These should be right at OEM deck height.

FRDnemesis

iTrader: (19)

I probably should give you a call when I get a chance. Gunnar, thanks for staying on top of my question, and for doing things that most vendors can only dream about for customer service.

Jeff

Gunnar@Patriot

iTrader: (20)

No problem. Just give us a call here at the shop. We will be glad to answer any questions we can.