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10-08-2021, 08:09 PM
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#1 |
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Member
Join Date: Apr 2005
Location: san antonio tx
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Re: 2-barrel Roch Only Questions
Didn't the 305 in a 76'-77' Camaro run the 1.375 2-barrel?
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10-08-2021, 09:29 PM
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#2 | |
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Location: Miles From Nowhere
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Re: 2-barrel Roch Only Questions
Quote:
Well probably lots of year cars run them but only legal on two years of 350s ;-)
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"We are lucky we don't get as much Government as we pay for." Will Rogers |
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10-08-2021, 10:17 PM
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#3 |
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Join Date: Nov 2008
Location: Glendora,Calif.
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Re: 2-barrel Roch Only Questions
How about the 2 barrel 265 horse 396?
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10-08-2021, 10:48 PM
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#4 | |
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Re: 2-barrel Roch Only Questions
Quote:
Also same as the 71 and newer 350
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"We are lucky we don't get as much Government as we pay for." Will Rogers |
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10-09-2021, 11:18 AM
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#5 |
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Senior Member
Join Date: May 2010
Location: Raleigh NC
Posts: 637
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Re: 2-barrel Roch Only Questions
I tested the difference/gain between the 1.186" 1.250" on my 305 Nova, and on the 75 350 Nova combo. Was only worth a tenth on both combo's.
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Mike Moller NHRA 203 Q-R-T/SA |
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10-09-2021, 12:08 PM
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#6 | |
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Join Date: Dec 2014
Location: The Land of Bayous, Boudin & Crawfish
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Re: 2-barrel Roch Only Questions
Quote:
Thanks for posting it !  Now, for some of you serious 2-barrel Roch racers. Who are some of the best 2-barrel roch carb builders who are CURRENTLY building them ? Don't need the names of those who use to build 'em & are no longer doing it. What is the aprox cost of a 1.186 & a 1.25 nowadays, including the core ? Don't have to be for a class winning record holder. Just a good competitive carb to run just under the index of an average combo. These may seem like REAL dummy questions. But, if I knew the answers, I wouldn't ask the questions. (1) Is a good 2-barrel Roch any more consistent than a Q-jet ? (2) Is it easy to get a 2-barrel Roch to launch(start the timers) consistently, so that you can dial in your RT, pretty close, on the tree. You can compare it to a Q-jet, which is what I've always used. Have no idea how much different running a 2-barrel is. 
Last edited by oldskool; 10-09-2021 at 12:10 PM. |
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10-09-2021, 02:55 PM
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#7 |
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Member
Join Date: Mar 2006
Location: EL PASO, TEXAS
Posts: 156
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Re: 2-barrel Roch Only Questions
I've been doing the 2-bll. Rochesters for the c/track guy's here in the southwest for several years. Lil known secret to make them run is not necessarily in the venturi housing but in the
booster cluster, float prep., and proper jetting. Oh, and were at 4000 ft. Above sea level with a air density altitude of 6500/7000 ft. On race day.. |
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