An old cylinder head, but a dandy!
#3083823
10/06/22 01:19 PM
10/06/22 01:19 PM
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Joined: Jan 2003
Posts: 9,985 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I went to Rock Falls Raceway last Friday, and spotted a duster , mini tubbed, caged , parachute, full interior. Then watched it rip off an 8.91 at 150 mph. I talked to the owner, and he asked if I knew what heads he had. I figured stage 6, and was right! Stage 6 Chapman ported, 540 cubic inch low deck aluminum block, single dominater on gasoline, 3340 lbs race weight. With an 8/10 mph 3/4 head wind and DA of about 2000 I was thoroughly impressed! My 2019 mustang gt 10 auto didn't t fair as well, got sideways at 200 to 300 feet out ( street tires, e85) and had to lift! Best I could muster was a wheel spinning 12.23, 2.04 60 ft, at 118.6 mph. I quit trying after the 12.23 pass, just too squirrelly and didn't want to crash the car.
Last edited by gregsdart; 10/06/22 01:26 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: An old cylinder head, but a dandy!
[Re: gregsdart]
#3083878
10/06/22 04:45 PM
10/06/22 04:45 PM
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Joined: Jan 2003
Posts: 19,361 Las Vegas
Al_Alguire
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That was a decent head for the time for sure. For that weight thats close to 850-75HP...Alot for that head but doable..
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: An old cylinder head, but a dandy!
[Re: Al_Alguire]
#3083889
10/06/22 06:05 PM
10/06/22 06:05 PM
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Joined: Jan 2003
Posts: 9,985 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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That was a decent head for the time for sure. For that weight thats close to 850-75HP...Alot for that head but doable.. Al, that corolates to R&Rs dyno, where he said it made over 900. Figure the loss of hp with wind and DA, those heads are delivering. Also I recall he was leaving at 2500? Radials. So there is a bit more in it.
Last edited by gregsdart; 10/06/22 06:09 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: An old cylinder head, but a dandy!
[Re: old_racer]
#3083962
10/07/22 01:36 AM
10/07/22 01:36 AM
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Joined: Jan 2003
Posts: 9,985 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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If it was green , it was Josh with his demon. lives in Eau Claire area, great guy. fast car, he's stood it on the bumper a few times also. yes. Josh, green duster.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: An old cylinder head, but a dandy!
[Re: John Burdine]
#3083979
10/07/22 08:43 AM
10/07/22 08:43 AM
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Joined: Jan 2003
Posts: 74,976 U.S.S.A.
JohnRR
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Didn't Dulcich use these heads for an engine masters deal years ago? Yes , even though Parkhurst told us they were not legal because I could not call and order a set on the day the contest started .
running up my post count some more .
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Re: An old cylinder head, but a dandy!
[Re: CokeBottleKid]
#3083980
10/07/22 08:44 AM
10/07/22 08:44 AM
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Joined: Jan 2003
Posts: 74,976 U.S.S.A.
JohnRR
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I Win
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Still gots my chapman stage 6s I got from John Ah-ah I couldn't remember who I sold them to , are you using them yet ?
running up my post count some more .
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Re: An old cylinder head, but a dandy!
[Re: JohnRR]
#3084003
10/07/22 10:12 AM
10/07/22 10:12 AM
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Joined: Dec 2021
Posts: 1,118 Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,118
Loudoun County, VA
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Still gots my chapman stage 6s I got from John Ah-ah I couldn't remember who I sold them to , are you using them yet ? I still got pics from when you showed them to me at Carlisle, but I opted not to purchase them. Does that count for anything?
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: An old cylinder head, but a dandy!
[Re: AndyF]
#3084054
10/07/22 01:14 PM
10/07/22 01:14 PM
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Joined: Jan 2003
Posts: 13,357 Marion, South Carolina [><]
an8sec70cuda
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That's a bad ride! Very nice looking and runs really strong! Looks like it has the longer chevy length leaf springs under it judging by the length of the Cal-Trac bar. Those heads can obviously make power, but they always seemed overpriced and required so much work to be useable.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: An old cylinder head, but a dandy!
[Re: an8sec70cuda]
#3084070
10/07/22 01:44 PM
10/07/22 01:44 PM
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Joined: Jan 2003
Posts: 9,985 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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That's a bad ride! Very nice looking and runs really strong! Looks like it has the longer chevy length leaf springs under it judging by the length of the Cal-Trac bar. Those heads can obviously make power, but they always seemed overpriced and required so much work to be useable. I thought Chapman made them race ready?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: An old cylinder head, but a dandy!
[Re: gregsdart]
#3084074
10/07/22 01:54 PM
10/07/22 01:54 PM
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Joined: Jan 2003
Posts: 13,357 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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That's a bad ride! Very nice looking and runs really strong! Looks like it has the longer chevy length leaf springs under it judging by the length of the Cal-Trac bar. Those heads can obviously make power, but they always seemed overpriced and required so much work to be useable. I thought Chapman made them race ready? I was referring to the Stage VI heads from MP. They were garbage as delivered from MP. For the amount of money you'd have in them to make a decent head, you'd have been better off to start w/ something from Indy. The Chapman Stage VI heads were supposed to be good to go, but were really expensive from what I remember. Expensive enough that I'd rather go the B1 route and have more power potential.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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