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Re: mopar stage iv and stage v heads
[Re: Streetwize]
#3282671
01/14/25 04:24 PM
01/14/25 04:24 PM
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Joined: Jun 2008
Posts: 3,924
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,924
usa
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Re: mopar stage iv and stage v heads
[Re: lewtot184]
#3282710
01/14/25 07:06 PM
01/14/25 07:06 PM
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Joined: Dec 2021
Posts: 1,486
Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,486
Loudoun County, VA
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That flow test data looks like the spreadsheet I made for myself years ago and also gave to Dwayne Porter when he was still using an SF-110
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: mopar stage iv and stage v heads
[Re: Streetwize]
#3282773
01/15/25 12:30 AM
01/15/25 12:30 AM
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Joined: Aug 2003
Posts: 44,209
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 44,209
Bend,OR USA
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Dave Boertmam raced a 1971 383 Challenger in NHRA SS off and on for many years in the early 1970s, his wife won the Winter nationals in Stock class one year racing against him in the finals. I can't remember the name of their major sponsor, it was a pretty large Speed Shop chain in the Midwest that sponsored a lot of other drag racers: confused: 
Last edited by Cab_Burge; 01/15/25 12:31 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: mopar stage iv and stage v heads
[Re: Brad_Haak]
#3282783
01/15/25 05:48 AM
01/15/25 05:48 AM
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Joined: Jun 2008
Posts: 3,924
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,924
usa
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That flow test data looks like the spreadsheet I made for myself years ago and also gave to Dwayne Porter when he was still using an SF-110 those are flow numbers from PRH for my stage5 heads.
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Re: mopar stage iv and stage v heads
[Re: Streetwize]
#3282952
01/15/25 09:16 PM
01/15/25 09:16 PM
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Joined: Jan 2008
Posts: 4,290
Canada
WO23Coronet
master
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master
Joined: Jan 2008
Posts: 4,290
Canada
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Neither set was Maxed out and they were both around 285-290 at .650-700. You can probably get as much or more peak out of a full tilt 915 or 906 but I would bet the better short side would mean the V's would have a better Average flow from say .450 to .650 which usually equates to more torque/VE and power. and both sets were substantially better than an OOTB Edelbrock and legal for FAST.
I'm not sure what the Quickest A12 6 pack car is running in FAST now but I know I wouldn't put thousands into porting a 1 off nearly 60 year old 906 if the V is FAST legal. Also, My Set had a 2.19 intake and with a lighter/skinnier stem valve there would certainly be a bit more flow to get out of narrowing the guide bosses further. Still there's only so much you can do with the Valve angles and the short turn with a BB wedge. But I would think a well worked V would ET better than a 906 that flows the same peak numbers. It might work well in a 72 400" Charger Ralley as opposed to a 71 383 block super bee... if a 72 is legal in Fast.
As we see the 72 and up Thermoquad can make mad power in the LA Duster. The Charger is definitely more Aerodynamic than a Plymouth so maybe the 72 Ralley TQ at about 517-528" Low deck with the Stage V's might be a contender.
It's been a Long while since I was involved "back in the day" but if the Carb rule is still intact, I would think a TQ low deck would beat and A12 69-1/2 at the same (or near same) weight.
I remember mentioning to Tom Cannon (When He ran the Red T/A challenger) that I thought a 71-72 340 TQ Duster or Demon would be the quickest LA combo that could be built...because of the Plastic Fantastic, some of the old-schoolers (who smoked) used to use TQ's as ASH trays, lol) could really move some air.....
Who was the Rod Shop guy that was the Stock eliminator champ in the Early 70's? Dave Boertman? He ran a 71 Charger 383 so the tricks to make them hook are out there. I know the 71-72's are lighter than the 73-74's.
Update: According to MyLife, Dave is still Alive and well at 84!!
You think a TQ on a cast intake would outflow a 6 pack for a BB with all the FAST tricks?
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Re: mopar stage iv and stage v heads
[Re: WO23Coronet]
#3283013
01/16/25 10:30 AM
01/16/25 10:30 AM
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Joined: Jan 2003
Posts: 14,589
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,589
So. Burlington, Vt.
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You think a TQ on a cast intake would outflow a 6 pack for a BB with all the FAST tricks? Imo, no way.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: mopar stage iv and stage v heads
[Re: fast68plymouth]
#3286801
02/03/25 09:17 AM
02/03/25 09:17 AM
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Joined: Jan 2003
Posts: 9,954
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,954
Weddington, N.C.
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No Im not 'm not saying the TQ Manifold would be BETTER than an A12 sixpack manifold at all....but I do think a max ported Low deck Manifold with a TQ in an equivalent or less weight 72 Charger might outrun a 69 1/2 A12 RB car. Possibly just a better all-around combination. Similar to the way the 72 Duster TQ in FAST has developed into a quicker package than a 70 AAR or T/A 6 pack; despite the manifold and even fresh air "handicap", it has proven to be more than made up for by the other advantages of the combo ( much lighter, less frontal area, shorter front/longer rear overhang, etc). that's all. But I do think the low deck's shorter manifold runners (for the same cross section) would be less restrictive at high RPM (all else being equal) than an RB, especially with a Stroker motor that generates a lot of piston speed. Also the 3rd gen B body is more aerodynamic than any of the second gens, although I am 100% a second gen fan. I think a 72 charger would be quicker, especially on the big end. That's all I was saying 
Last edited by Streetwize; 02/03/25 09:24 AM.
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