Just wanted to start a discussion on what is the best set-up for NA cars. Should you run bigger flowing intake port heads with a small cam or a bigger cam with a smaller flowing intake port heads?
Opinions?
Opinions?
I wouldn't consider this a tech question, though. It should probably be in the 5.0 general/talk forum.
AFR185s absolutely are not too big for a 306. Nikwoac made ~330rwhp with a 205cc CNC ported head on his 302. However, I believe you'll have to notch the pistons with the AFR185, whereas you would not need to notch for the AFR165s.
It's kinda funny that there are a lot of folks on the TFS bandwagon, now. AFRs were the bandwagon for a long time. Oh well, forum opinions are wishy-washy. Both are top of the line heads that flow and run neck and neck in airflow and on dynos. I do believe I'd give the 11R heads a try on a new build, but they were not available at the time I made the decision and there's no way I'd go to them over the Renegade AFR 205s on mine, now. If, and it is an "if", they made any more hp than the AFRs, it would be insignificant.
If I were building a cost-no-object 302 N/A build, then I'd be looking at AFR185s or the 11R 170s or 190s. The port volumes between AFR and TFS are not directly comparable. The difference in the valve angle means that TFS heads sounds smaller than they actually are. Cross-sectional area would be a better way to compare these heads.
Well, the engine master vid is not real world in my book. How many members on this site have a 410 CI stroker stuffed in their fox body. Was looking for more data points than just one engine to see what is really correct.
kind of a loaded question.Just wanted to start a discussion on what is the best set-up for NA cars. Should you run bigger flowing intake port heads with a small cam or a bigger cam with a smaller flowing intake port heads?
Opinions?
High port isn't anything new honestly . Maybe the programs they are running on them are . Afr headed cars just cannot hang we've seen it first hand in ultra street . I'm not saying they are a terrible head and will not make power for a fun fast car even a wild one . Data at the track tells me the Tfs heads are dominating in class racing as far as a in line head is concerned .Ok. I'll go with you on the latest TFS heads seemingly having an advantage. That's why I said I'd build that way with a from scratch build, today. However, AFR not coming close? I'm open-minded, but that will take some convincing.
So, perhaps you can show me something more up-to-date than but in the same style as this old article?
http://www.mustangandfords.com/how-to/engine/mmfp-0608-cylinder-head-shootout/
Richard Holdener did stuff the right way. Same day, same motor, same dyno with a full run down of all of the specs and parts involved. The TFS head in this shootout made a negligible bit more power over the AFR.
AFR and TFS have changed their game up, but I've not seen anything like this in a long time. Have you?