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12-18-2009, 05:54 PM | #21 |
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Re: Thermoquad vs Quadrajet
I have seen many of the bowls vary in color from black to dark brown. Remember these "plastic carburetors" bowls were made of a polyfiber-resin materiel that is rather fragile. The "red" could have been a different resin compound they were trying out, but again, I have done hundreds of Thermoquads for Stock and Super Stock applications and never seen one of the "red" bowls. Jim
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Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 D2 National Open Stock Champion 1981 D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association. SSSSA Forum Moderator |
12-18-2009, 10:46 PM | #22 |
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Re: Thermoquad vs Quadrajet
The 800 Qjet is easy to tell from the 750 once you have seen both. The outer ring (the primary venturi) is round in a 750, and larger with a protruding bump in it on the 800s. I've seen 800s on such unlikely stuff as a late 70s Olds 350. In that case, the linkage that opens the secondary throttle blades was restricted so they didn't open all the way.
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12-18-2009, 11:54 PM | #23 |
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Re: Thermoquad vs Quadrajet
The red bowl was marketed as a performance application. Mid-late '70's I think?
Wow...there's a Thermoquad.com site! http://www.thermoquads.com/page203.html CFM differences here: http://promaxcarbs.bizland.com/thermoquad.htm
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Jeff Lee 7494 D/S '70 AMX Last edited by Jeff Lee; 12-19-2009 at 12:06 AM. |
12-21-2009, 02:11 AM | #24 |
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Re: Thermoquad vs Quadrajet
Thanks to everybody for the good feedback! I'll let you know by March how the Quad seems to be working out. John Irving
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12-21-2009, 10:13 PM | #25 |
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Re: Thermoquad vs Quadrajet
John if you go to a quadrajet put the thermoquad on jr. car.(n/sa) record with that carb i thought would be fast enough. See u after new years race at sac.
Randy B.791 |
12-22-2009, 09:58 AM | #26 |
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Re: Thermoquad vs Quadrajet
Danny, you gots mail.
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