I vote AFR. We built my cousin's 289 with AFR 165 heads and to this day when he runs it at the track people still accuse us of lying about his little 289. Four door 1968 Ford Fairlane, full interior, pulled out the spare, jack, tools, etc, 270H cam, 650dp, headers and about 18 inches of exhaust, 4000rpm stall, C4, 3.80. Just pushed under 8 second 1/8 mile. Over 400hp at the crank, bolt an exhaust on it and it is streetable. Same setup before the 3.80 and stall was just over 20mpg on the highway. AFR knows their stuff.
Yep. Those heads are awesome, essentially no restrictions on the intake or exhaust in this setup, I can't see there being anything left to get out of it. Already has 1.7 roller rockers. With the full exhaust it is probably 350 hp tops. Those heads are a 75 hp upgrade over stock.
Car is right at 3200 with driver, fastest run was 7.98 in the eighth mile. 60 ft was a 1.6 or 1.7 launching at around 4000.
I can see it, with the 270H. If They got 400 with the HO roller, it's not at all unrealistic with the 270H.
me too. with the right heads and properly matched parts.. and the obvious spark/fuel tuning.. smaller cams can have their power bands stretched in both directions at once. many don't realize what potential a stock HO cam holds when parts are designed, matched and mod'd around it. Personally.. I'd cam it up a notch and a half(around 282'ish).. lightly port those heads(mainly guide boss and bowl work).. and then run another 400-500 stall with 4.11's in the punkin. Might crack into the 11's. Then again.. that's a nice solid 12 second street cruiser the way it sits now and probably serves a better "double duty" to enjoy more often on the streets. I actually think I like my Blazer more now that I put it all back together and spit the 3' exhaust out the back. Funny how the grass is always greener... till you stand in it too long and it eventually losses some color.
Nice way to put it. We ran the 270H because the bottom isn't balanced, peak power is already at 6700-6800RPM according to the program we use, probably 6500 in the real world, but it is a little tough to be that accurate using only a butt-o-meter. The drive train is in a stripped out fox body now running in the 7.30s. Swapping parts around again, going to get his Fairlane full on streetable and mostly original, trying to find a set of AFR 185s for his 351/408 and I want to buy his 165s. For some reason people want money for these parts, keeps slowing me down...
lol.. what gets me is that they don't consider how much it costs to hot tank a set of used heads either! and completely rebuilding or just refreshing heads ain't exactly cheap either. And remember what Dr Phil says.. "swaps and barters can do wonders to spice things up in the garage".
lol We have access to a machine shop, so unless there's something wrong with the heads we'll give'em a good once over, maybe even twice, and bolt them on. He hardly has any miles on them, but almost all of those miles are over 4000RPM. My Comet is going to be 99% street, so it'll be like his heads retired and moved to Florida.
If you're refering to the 10-year-old AFR test done on Westech's dyno, no one else has been able to duplicate it since with that combination and many chalk it up to a "happy dyno" or making the customer's product look good. Not trying to push any buttons here, just learn more about the combo. Do you have dyno sheets or mph figures from the track?
We never dynoed the car, built it and ran it. I think he was trapping mid 80s in the 1/8. Just sent an email asking.
http://mmb.maverick.to/showthread.php?t=23078 Digging through my old posts looking for numbers while waiting on this bookkeeping computer to finish updating...
Just got an email, the run was 7.96 at either 96 or 99. He's looking for the slip. He doesn't have a scanner, but he may be able to take a pic with his phone.
It's been done more than once, I'm sure. You say no one has been able to duplicate it? I ask you to prove that they have not. For every engine that's been dynoed, there are a hundred out there that have not. MPH figures are somewhat misleading too. There are too many variables to use them as a gauge in estimating HP numbers. There's a 302 build listed in Max Performance Fords that's pushing 450hp with 185's and a 282HR, but again, it's probly dismissed by yourself as it too was on Westech's dyno.
Why should I have to prove to you that it hasn't been duplicated? You should be proving to me that it has. Hundreds of guys have slapped 165s on stock short blocks exactly as described in that article, trying to reach the magic number. No one has reported hitting it. A stock short block is a stock short block, no magic there. But it's very easy for a dyno operator to manipulate the readings for marketing puposes. Not sure what a 302 with 185s and a 282 roller cam has to do with this conversation. But I can believe that number.
