99TransAmLS16Spd

iTrader: (8)

Does anyone have any experiance with these heads? I will be going with a TSP 418 long block very soon, but need some help with head selection. I would like to stick with the cathedral port design, as I think they are a better fit for my application.
The LS6 stage 3 look very nice, but I find nothing when searching nor can I find flow numbers. And with the new PRC 237s soon to be released, as well as the TFS 225s being in the same price range, it is a very hard decision.
I'm not sure if it will make a difference, but I will be re-using the FAST 92 (and port matching it), as well as a custom spec'd cam once I select the heads. Car is street driven, but not a dd.

I currently have the previous generation of PRC stage 1 heads with an upgraded valve job and Manley valves - I am very satisfied with them, and would expect the stage 3's to be of even better quality.

Thank you for any input

Ego Killer

iTrader: (147)

I have those heads with a FAST 92 on my mild 408 and I like them they seem to work nice. I put down 470 through a 9" and a unlocked th350 with 4000+ stall

CalSpeedPerformance

iTrader: (64)

my personal opinion is those begin to rival the cost of an aftermarket casting...I would go Trickflow 225 or 235's

Jon@Texas-Speed

iTrader: (18)

The PRC 237cc would be a perfect addition to that engine. The 237cc head moves well over 340cfm at the bore your considering & should help to push a 418 to near 700 flywheel with the correct configuration. Give us a call when your ready to roll, maybe we can work something out to do a little engine dyno testing if you purchase the heads & short-block at the same time.

99TransAmLS16Spd

iTrader: (8)

I would definetly be interested in something like that Jon. If we could work something out with the dyno, that would be great. It would help relieve any worries I have in going with a brand new product. I will be giving you a call. Thank you

Jason 98 TA

iTrader: (4)

Give us a call, we have 418s on special & we can work something out to get it engine dyno tested prior to shipping!

SmaknaSS

iTrader: (1)

That's alot of power! I would love to have that much power on my 418 but would probably fall short on pump gas. After some real world test, I may soon have to put the PRC 237cc's and a cam to match to the test.