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12-14-2017, 01:05 PM
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#1 |
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Junior Member
Join Date: Dec 2015
Location: waconia mn
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Switch to 2bbl
I currently have a dish piston 305 how much slower can I expect it to run with a 2 Barrel. Thanks for the input.
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12-14-2017, 06:01 PM
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#2 |
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VIP Member
Join Date: Apr 2012
Location: Connecticut
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Re: Switch to 2bbl
My 69 Chevelle wagon ( 3865 lbs) slowed .5 or so from a Q-jet to a 2GC.
Mike A114 |
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12-14-2017, 06:17 PM
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#3 | |
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Veteran Member
Join Date: Mar 2002
Location: Miles From Nowhere
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Re: Switch to 2bbl
Quote:
Mr Money, Not enough info here. Depends on who built the 2 bbl, the 4 bbl, and the engine, itself. Maybe the wizard on the hill in Pa. will take a WAG at it?
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"We are lucky we don't get as much Government as we pay for." Will Rogers |
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12-14-2017, 06:47 PM
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#4 |
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Junior Member
Join Date: Dec 2015
Location: waconia mn
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Re: Switch to 2bbl
Motor ran. 80 under with 4bbl. Having Dean Oliver build my 2gc. Not sure how good the intake is. It's going in a 77 Buick skylark that will fall into R/SA.
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12-14-2017, 06:50 PM
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#5 |
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VIP Member
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Re: Switch to 2bbl
Thanks Mark
Al Peters told me the difference between the small 2GC and the big one, is also about .5 Mike A114 Last edited by Mike Jones; 12-14-2017 at 07:37 PM. |
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12-14-2017, 08:27 PM
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#6 |
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Senior Member
Join Date: May 2010
Location: Raleigh NC
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Re: Switch to 2bbl
I run the same combo in 1978 nova: reasonable motor, deano carb, cam was ground for a four barrel. Ran mostly mid 13.8's in fair air, 13.7's in good air, mph mid 93 at 3450 weight in R - when HP was 180 in 2016 season. Running stock aluminum intake, not tried the cast intake as yet, for 1978 both are legal. Don't know how this will compare to your 4 bbl numbers.
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Mike Moller NHRA 203 Q-R-T/SA |
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12-15-2017, 02:25 AM
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#7 |
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Senior Member
Join Date: May 2004
Posts: 801
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Re: Switch to 2bbl
Jmoneyfoot, 305 dish piston motor, intake valves are different size, on 2 barrel & Q-jet. on 350 Q-jet & 2 barrel motor have same size valves, easer to switch 2 barrel to Q-jet.plus 2 barrel on 350 are bigger size than 305.
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Tom Moock 5704 STK |
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12-15-2017, 08:27 AM
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#8 |
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Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
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Re: Switch to 2bbl
Mr. Billy uses the SWAG method. With Billy it's science!
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12-15-2017, 09:05 AM
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#9 |
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VIP Member
Join Date: Oct 2002
Location: On a hilltop in Pa.
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Re: Switch to 2bbl
Really good intake, really good head (don't worry about the small intake valves), bigger cam than 4V and carb flows about 325 CFM (before Deano).
There's a very good one here in Div.1 in a Malibu wagon that runs R and T and when it pops up it's usually a second under car. Much better combo than my 307.
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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12-15-2017, 12:33 PM
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#10 |
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Senior Member
Join Date: May 2004
Posts: 801
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Re: Switch to 2bbl
Billy, same cam 78 Malibu 2 barrel & 79 Malibu Q-jet, I thought about useing 2 barrel on my Malibu, but you had to change heads.
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Tom Moock 5704 STK |
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