destroyerSS

iTrader: (2)

Just wondering if you guys think that i would benefit from opening up my AFR225 or going to a bigger head for my 408?? Cam spec's are in my sig. Thanks

Quickin

ETP 265 41's (380-ish cfm)

Isn't the 85mm maf defeating the purpose of the 90mm intake and TB?

Beast96Z

iTrader: (21)

The 225's have made over 550rwhp on 402's, so I doubt there choking you down. I'd swap cams before I swapped heads. The ET's would be a nice addition, but a very expensive "maybe". Quikin, the 85mm MAF is the largest offered for our cars. The only other option is a $500 Pro-m MAF or speed density.

SUX2BU

iTrader: (14)

Tell that to the fastest cam only car in the country. i think he runs a stock 75mm MAF with his 90/90 set up.

1QuickT-A

iTrader: (12)

What kind of power did your 408 make with the AFR heads? The heads should be plenty of air for a 408..

mr2guru

iTrader: (16)

the lsx90 is choking flow more than the heads woulds.....

tuff

iTrader: (15)

The 265 etp would be nice but then you have to spend 350 for custom pedistals for jessel rockers if you don't have jessels that will set you back 1400.00 bucks for the set of rockers for etp 265 heads.And if your going to run a head of that much port volume you better check into a sheetmetal intake.Your 90mm intake will start falling off at about 6800-7000 rpms.I been down this road talking to some sponcers and that was pretty much the info i got.

Beast96Z

iTrader: (21)

I'm not sure which sponsor is relaying this info, but it isn't the first time I've seen it. All of the ETP 11 degree heads require the pedistal, but they come with the heads, your not charged an extra fee for them. If you didn't have the pedistals, the heads would be useless, so why wouldn't they come with them?

tuff

iTrader: (15)

I was never tolded that and i even called etp and they never mention that they come with the heads and i told them i had jessels.The only thing they said was it was 350 for the pedistals and you will need them if you run that head.If your correct that good news.

Beast96Z

iTrader: (21)

My 265's and Jesels were shipped last thursday. When I asked if that was all I needed, they replied with a yes. If you already have Jessels, I wouldn't think they would work with the 265's, since they have the offset intake valve. Maybe there was some confusion somewhere along the line????

tuff

iTrader: (15)

Im sorry when i talked to them they told me i would have to buy pedistals for the 255 since i had the jessels they were going to hit me for 350.Now that your talking about a 265 your correct you need a diffrent rocker for the offset that included the pedistals.But if you had no rockers and you wanted to go from a 255 to a 265 the only diffrence in cost was the heads.I think they still want to wack ya for 1400.00 bucks for the rockers.And it didn't matter if it was a 255 or a 265.

LASTLS1

iTrader: (7)

When did you order your heads?

Cary@Perf-Induction

iTrader: (1)

No one at our shop would have told you 350.00 for our pedestals, they would have told you that for a Jesel stand. our pedestals aer meant to work with stock style rocker arms, 215-255. the 265 is unique, it uses an offset rocker arm on the intake like a LS7. So the jesel kit is what you would need. The 255 are a good alternative if you do not want to spend the high dollar on rockers, and still flow in the 360's. Our pedestals do come with the 215-255 heads, that is what make our head a little more expensive than our counterparts. The pedestals are only valued at 100.00 though.

Tony Mamo @ AFR

iTrader: (13)

The 225's provide plenty of airflow for a 400+ cubic inch engine....especially one spinning to 7K or so which ultimately the FAST intake will probably limit anyway....even in ported trim.

Going solid roller, compression, sheet metal, and hopes of turning 7500 RPM's or more (effectively of course, meaning a power curve to justify), then a 225 might hold you back a little. Trust me that combination (with the 225's) would still be stout....you might only make 700 flywheel versus the 750-775 you could have seen with a quality larger runner, higher flowing piece...this of course assumes the head truly flows considerably more air (not just a little more and a lot of extra volume). The big ET stuff looks very promising for that market, and in an application like I just described would probably serve you well, but in a 7K street/strip buildup, I still feel the 225 AFR gets the nod (I'm justifyably biased of course )

Many independent results out there to back up their effectiveness on similar displacements in various configurations. You guys have to see this kind of stuff every day to truly appreciate that a legitamate 320+CFM's with extremely stong low and midlift flow to compliment (and a somewhat conservative cross section) is a very powerful combination capable of generating over 700 HP with the right combination of parts (in drag race trim of course). Look at the power the 205 street heads have been producing with a similar "recipe".

Once again guys, "Internet" flow numbers are dubious at best (I'm trying to be kind), and are not the end all in producing power anyway. At some juncture in the future I will no longer post on this board and others....If I could leave you with only ONE thing, it would be for all of you to realize just that.

That's my .02 for the evening....

Happy Holidays everyone

Tony M.

383ss

iTrader: (14)

nope. l would say yours is set up nicely if spinning less that 7k

DavidNJ

What does your torque curve look like?

Quickin

He'd be even faster with a 90mm MAF.

Beast96Z

iTrader: (21)

Direct from ET a couple of months ago.

King James

iTrader: (13)

Not to justify the cost. At that point, I would think running SD would be more beneficial.

LASTLS1

iTrader: (7)

I'm over three months!!