Subject: Re: Driving impressions with the AFR heads by anesthes on 2009/8/18 22:26:59
Quote:
BeachBum wrote:
Hi Joe,
I think the difference between a $ 900 RHS head and $ 1200 TF head vs a $ 1500 AFR street port 195 or 210 head would be around 20-30 HP for a street car, even more for a race car....
Agreed..
Quote:
BeachBum wrote:
I think the difference between a $ 900 RHS and $ 1200 TF head vs a $ 2000 comp AFR head would be in lines of literally 30-40 HP for a street car and could be 50 HP on a racecar that is running the cam and rpm necessary to show the benefits of a well done cnc ported better cylinder head.
agreed. Given RPM.
Quote:
BeachBum wrote:
As a note, the Trick Flows in this test probably cost more than the AFR's.... but I don't know. I do know I think the base head is around $ 1200-1300 and if they were thoroughly ported by a professional as stated by Josh's flow test guy, then there is a good chance they cost $ 2000 or more with total cost.
That's my point. Figure, the TFS heads are around $1100 from summit. Most guys are going to buy heads and use 'em.. Not have them ported at a huge expense. If they had the money they'd buy a better head.
Quote:
BeachBum wrote:
heads/rockers/cam/ etc modifications as well.
When building an engine, a "good cam" costs the same as a "great cam". Same with rockers. So that doesn't matter. You use full roller rockers because they are soo cheap it doesn't matter.
Quote:
BeachBum wrote:
I do not like the Vega analogy, I have heard that before..... it could be then said, why a Vega? why not a mini-cooper and then why not a motorcycle?..... before
Because old vega, nova, etc are cheap and fast. 2800lbs cars.
Quote:
BeachBum wrote:
My only point, in things like the cylinder head debates and other performance related debates, there is no right and wrong answer, its all about what you have and expect it to do..... My opinion, if you do not see the value in cylinder head porting, then don't do it..... its all good. But, if you see the value in spending $ 500-$1500 for cylinder head porting and gains ranging from 20 HP to literally 60+HP depending on your set-up then do it.... its all good.
It's not much of a debate, and I'm not taking porting into account.
I'm curious what the true value is going from a $800 head like a RHS or sportsman to a $1500 head like a AFR 195.
If the answer is 30hp, well, we can triple that for the same price different elsewhere.
