So I have boxstock TrickFlow Trackheats on a 342 stroker with 14 lb Procharger. The engine makes great power but maxes at 5000 rpms. I was thinking the heads were a restriction since they are designed for NA 302's. I thought it would be a good idea to port the intake runners out to 185 and the exhaust runners out to 75 like AFRs. Stock AFR heads have 66 cc exhaust runners but they sell heads designed for boost that have 75 cc runners. This coupled with the purpose built carb and Torker II intake should give me my higher rpm power and fix my lean condition(lean condition that builds with rpm, and due to untuned/built carb). Anybody know how much port work like that would cost, or if they see something wrong with this logic let me know. I thought about getting AFR 185s but I'd have to order them with the o-ring and spring upgrade which I already have on the TrickFlows, plus it costs more for the boosted heads, so I'm cheaper off fixing my heads I have.
Porting TrickFlow heads; advice please.
- Thread starter SmockDoiley
- Start date
TIMMY2734
Founding Member
send them off to Brian @ TEA. Ive seen soem amazing numbers on his ported TW heads. What about the cam? what is it?
You could talk to Greg at Total Performance. Its been a while since I had heads done by him (actually john). I want to say roughly 850 including cleanup etc... I guess depending on what you want it may be easier to just sell your heads and get the afrs. Ed Curtis is an excellent choice for the cam.
TT91
Active Member
I run ported TW heads on my motor, boosted 331, pulled all the way to 6000 without any sign of power drop off. I paid 700 for fully ported and rebuilt heads, bronze valve guides, seals, ect. Its a great head with alot of growing room. BTW i use an AFM high rev camshaft
SO I found this local head shop(no pun intended), but I'm not sure if I believe what he is saying. He sounds pretty honest and forward and knows all the techie stuff on Trickflows but what he says contradicts what I've always known and heard. He says the intake runners are adequate for my blown 342, and he says Im losing power because of the valve springs. I have TRackheats with the 600 lift valve springs with an X303 cam rated at 542 lift. He says the valve springs that come with the heads are crap and are causing me valve float at my 4900 rpm power peak. I'm not sure if I believe the intake runners are adequate since AFR suggests 185s or even 205s for revving strokers. 170ccs just doesnt seem enough to me, maybe for a NA 302. I feel my power loss is due to inadequate runner size since my cam is rated to 6200-6500, and the intake is a performer rpm also rated to 6500. I bought a Torker II intake and I believe that coupled with some head work will get me my high rpm power.
86Cobra
Founding Member
The X cam won't make power to 6200 in a 342. It's gonna fall flat around 5500.
I agree with you that stock TWs are holding you back. I had my TWs ported by Brian Tooley at TEA and am very happy with the results. He does excellent work.
The Track Heat springs are fine for an X cam. They'll easily handle the lift and the ramp rates are lazy on that cam.
I agree with you that stock TWs are holding you back. I had my TWs ported by Brian Tooley at TEA and am very happy with the results. He does excellent work.
The Track Heat springs are fine for an X cam. They'll easily handle the lift and the ramp rates are lazy on that cam.
86Cobra
Founding Member
Also, I'm not real familiar with carb intakes, but how does the Torker II compare to the Vic Jr? I'd think a Vic Jr would be the right intake for you.
I like the Vic intake but I'm trying to keep this thing under the stock hood. The torker is a great single plane intake which is the key with blowthrough supercharging. I thought the springs good too so I'm going to keep them for now. I couldnt believe that he was saying that stock TW intake runners are sufficient for a blown stroker. I think that if I had a custom cam, torker intake, reworked carb to stop lean condition, and TW ported out to AFR 185 boost heads specs, I'd solve the problem. The biggest problems are the small heads and the fact that the carb needs work to get it to richen up as the rpms build.
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