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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: scatpacktom]
#779633
08/22/10 04:17 PM
08/22/10 04:17 PM
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Joined: Sep 2004
Posts: 6,906
IL, Aurora
ademon
master
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master
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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Quote:
If need be I'll be happy to prove it. I'll have a new car coming out soon that I think would be the perfect test bed. It's a 72 400 Charger,TQ equipt of course. I'd have no problem swapping a pack on at the track,I own the parts. The car doesn't have fresh air so that wouldn't be a factor. I have the ability to set the A/F ratio in either setup to the other. I'm well versed in both setups. Its 8 bolts to me  Sounds like fun 
I'd be willing to bet on the pack by about 3 mph. If someone out there has a B engine spreadbore dual plane aftermarket intake I could borrow I bet we could close in on the pack.
We could always toss a TQ on the Bee I'm sure that would slow it right down. I would have to see if I have any 440 TQ manifolds.
i would think that you would have to have the 850 cfm t-quad, with the choke, and rod over the secondarys removed so it would cfm around 900, then you would need to drill primary jets around .101 and sec to at least .157, sqirter would have to be drilled to at least .033. Then you might be close to the 6 pac
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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: babarracuda]
#779635
08/22/10 05:34 PM
08/22/10 05:34 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Since this is a question and answer forum, doesn't economy vs performance come into play. There are a lot of 4 barrel cars out the and not very many 6 pak cars. I will be replacing my Holley 750 DP with a Thermoquad. I'll bet I get much better gas mileage and more power(faster) at the strip. I have already tried the race on an engine dyno and the car was a pig at the strip. I changed cams, put on a dual plane spread bore manifold, took out the 4.30's and put in 3.23's. I realize now that a big part of my problem is a 410 stroker with Diamond rectangular port aluminum w2's. No torque down low. I'll let you know after I go to Sacrmento in September. Top gun dragstrip @ 4000' won't tell me much. The car ran 13.54 @100 mph at Top Gun in June. It didn't even start to run until 330'
dude that hing is going to be a PIG w/ 3.23's you ran 13's before get ready for 14's ... at least you won't need a helmet
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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: dOc !]
#779636
08/22/10 05:42 PM
08/22/10 05:42 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
...and doing it with the two-screwdrivers .. you [Edited by Moparts - Family Friendly Site - Keep it clean]-up the lock-screw  ...plus if the spring snaps-back ... it can DISlodge or can break....
This tool here is soooooo much BESTer than the Miller part ...it makes the people's heads spin ... 
Wasssupy ? .. LOL
B.u.g.g.e.r.e.d - up gets an EDIT ? 
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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: Mr.Yuck]
#779637
08/22/10 05:47 PM
08/22/10 05:47 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
dude that hing is going to be a PIG w/ 3.23's you ran 13's before get ready for 14's ... at least you won't need a helmet
Hay Y-guy .... watch what choo say 
I am running mid-12's ...with a 2.76 gear ... ....
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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: Mr.Yuck]
#779646
08/22/10 10:09 PM
08/22/10 10:09 PM
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Joined: Jul 2003
Posts: 4,766
Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,766
Holland MI Ottawa
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The car was a 1970 Challenger. The 440 was an old school build- TRW flat top pistons. (On paper rated at 10:1) The heads were 452s with a valve job only. No port work or even gasket matching. The cam was a Mopar 509. Old 3000rpm B&M converter, reverse man 727 and 4:10 rears. Hooker comp headers and 3 chamber Flowmasters (Hey it was 1995-they were the hot thing) I drove it to the strip and ran 12.80s. Dont know if Holleys would have been better but as a package the edelbrock system works great and is much more affordable than a six pack. Power was flawless from idle up to 6 grand. Mileage was about 10 mles per gallon. I could have ran 600cfm carbs but went with the 500s as this car was nearly all street. Im not saying the edlbrock set up is the best. For a multi carb set up it works great, looks great, has easy/affordable parts availability and costs MUCH less than a sixpack. Quote:
How is the powerband and mileage with those 500's?
who cares about mpg? It's a 4 4 o! and if you go 2x4's do it right and get a set of holleys.
No idea but if I had to bet 2x500 eddys vs a 6-pack, I'll bet on the 6-pack. Now a set of DP's and a good 2x4 intake I'll take the twin holleys
Keep old mopars alive.
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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: HYPER8oSoNic]
#779650
08/26/10 10:29 PM
08/26/10 10:29 PM
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Joined: Jul 2010
Posts: 40
Corona CA
wyotech_cuda440
member
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member
Joined: Jul 2010
Posts: 40
Corona CA
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Quote:
Quote:
I have no experience with a tq, but I cant complain about my 6pack, it just runs good. I have used a performer rpm airgap with a carter avs- I wasn't too impressed, then I went to the sixpack on a Weiand/mopar crossram- it ran a hell of a lot better, but didn't really pull below 3k. Then I swapped to a factory sixpack manifold, low end came back strong, but it did lose a bit up top.
Why the crossram did that is because of the passages. They were tuned for 2.5k to about 6.5k.
The factory manifold is tuned for off-idle to 5.5k. Big difference!! The crossram needed gears
around 3.90 and up. The factory manifold would be comfortable with gears from 3.55 to 4.10
before rejetting for bigger gears. 
I knew that when I swapped. I would have kept the weiand, but I couldn't clear the hood with the air cleaner on. BTW, I have 4.56's and 29" tires, and the weiand has all of the old "tricks" done to it, the carbs have been worked as well. The car ran 10.9's in the late 80's/early 90's on DOT tires. Now it's on street duty, but I'm workin on a new engine that should put me in mid-low 11's on pump gas, with no issues on the street.
Daily driver: 2002 Dakota R/T, slightly modded
Weekend machine: 70 cuda, 440-6 street/strip
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Re: Thermoquad vs. Six Pack/Six Barrel. Which is best ?
[Re: wyotech_cuda440]
#779651
08/27/10 12:18 AM
08/27/10 12:18 AM
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Joined: Oct 2006
Posts: 4,765
quick77rt
Parts Problem
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Parts Problem
Joined: Oct 2006
Posts: 4,765
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Great topic, and another ? Which is a better manifold, the BB six pack or the small block manifold itself. My slightly modified sb likes 7k max, ive run it to 7600 but it seems to fall of at 7. Good Vid...pretty mild combo but the six pack works well.. http://www.youtube.com/watch?v=MxsguEwUgewAs far as stock for stock in the early 80s two friends, one had a very much stock 69 340/4 speed 3.91 Dart. Another an AAR Stock auto with 3.55s. I know of no mods on the aar, the only thing we could tell on the dart was it had the big plastic spreadbore on it and it must of been lean as it got run hard and when running top end blasts you could eat a plug strap. No getting back to the cars...I would say out of about 10 runs over a couple year period it was always the dart by a car length weather from a dead stop or a slow roll. stick/3.91 vs auto/3.55. Both the aar and the dart were good running stockers and even in the early 80-s matching numbers, NOS, fender tags, never entered our minds just two cars on a country road doing what they were built to do...and them were some fun times. Ive never run a tricked out T quad, but im leaning to one on a stock manifold/in a stroker motor in a driver project im working on. I hate to ask the cost of a good 1000cfm unit, but then again it would still be cheaper then the full SP setup.
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The end carbs have metering plates in them, OR you can upgrade it to Quick Fuel's type
Whether street,
