GM and AFR CNC head pictures
02-13-2005, 11:07 AM
#21
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AFR Heads rock AFR heads are simply miles ahead of the older castings. Their designs are well thought out and the CNC execution is second to none.
Oh, and their flow numbers aren't overstated and they also flow substantially better than their competitors.....great cylinder heads!
Oh, and their flow numbers aren't overstated and they also flow substantially better than their competitors.....great cylinder heads!
02-13-2005, 04:18 PM
#23
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Wow, look at the diff between the exhaust ports on the heads! AFR somehow always manages to get the best exhaust flow.
Anyway mr. I've got 2 sets of nice heads, what's the plans for the GMs?
Anyway mr. I've got 2 sets of nice heads, what's the plans for the GMs?
02-13-2005, 04:30 PM
#24
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Originally Posted by Christos
Anyway mr. I've got 2 sets of nice heads, what's the plans for the GMs?
whats the cc on those? any millwork? if you're planning on selling, lmk the price ahead of hand...might already have them sold
02-13-2005, 04:38 PM
#25
Originally Posted by Flareside
The flow number make me believe that dyno numbers would be similar, but I'm really hoping that the smaller AFR port provides better throttle response that the dyno would never detect. We'll see. I measured an intake port in each head, the AFR was 206cc, the GM was 241. Big difference.
I am caught in a dilemma, should I purchase 205's or 225's?
Last edited by gollum; 02-13-2005 at 09:11 PM.
02-13-2005, 05:40 PM
#26
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Originally Posted by cyphur_traq
whats the cc on those? any millwork? if you're planning on selling, lmk the price ahead of hand...might already have them sold
I'll install the AFR combo, see how it runs, then decide what to do with the LS6 heads. I love the AFR combo on paper, but I'm still worried about the valvetrain noise issue. If it's too loud, I'll probably go with an LS6 cam and the LS6 CNC combo instead. I like the AFR ports, but I don't really like the AFR valve/spring combo for my purposes because I'll neve run a cam that's matched to them. The LS6 spring and lightweight valvetrain combo would be better for me, so going with the AFRs was a tough choice. I'm not sure how noisy the dual springs will be with the type of mild cam that I'm running, or how fast they'll wear out.I don't race the car often, it's more of a nice weather daily driver/go out to dinner car (that my wife uses it as much as I do), so it can't have any annoying traits or sound like a street racer.
02-13-2005, 05:59 PM
#27
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Originally Posted by gollum
Compairing GM's 241cc intake volume to AFR's newly released 225cc intake port volume. Wouldn't the AFR 225 provide more port velocity than the 241 GM head thus providing better throttle response than the GM 241 head, but less than the AFR 205 head.
I am caught in a dilemma, should I purchase 205's or 225's?
I am caught in a dilemma, should I purchase 205's or 225's?
02-13-2005, 06:34 PM
#28
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Originally Posted by LSonederfull
Huh? What does GM 241` casting have to do with its port volume? It measures 201cc stock, about 215cc ported. What are you saying asking?
