Switch to 2bbl

MikeMoller · 12-14-2017, 08:27 PM

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.

Tom Moock · 12-15-2017, 02:25 AM

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.

Larry Hill · 12-15-2017, 08:27 AM

Mr. Billy uses the SWAG method. With Billy it's science!

Billy Nees · 12-15-2017, 09:05 AM

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.

Tom Moock · 12-15-2017, 12:33 PM

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.

Coleydog · 12-15-2017, 02:52 PM

Well you got me thinking, just checked on a 318 mopar in 70 & 69, 70 was 185, 69 - 172. Really, was there that much difference between the two? Hope someone who runs one can chime in.
Sorry if I jumped rails here.
Mike
The factor for the 70 is 15.32 and the 69 is 16.70. What class are these?
Mike

David Lee · 12-15-2017, 03:44 PM

Quote:

Originally Posted by Coleydog

Well you got me thinking, just checked on a 318 mopar in 70 & 69, 70 was 185, 69 - 170. Really, was there that much difference between the two? Hope someone who runs one can chime in.
Sorry if I jumped rails here.
Mike

its funny the 318 in 68 is rated higher, even though its the same engine. I am going to asdk the powers that be to get the lower rating on the 68

HR9121 · 12-15-2017, 06:30 PM

Quote:

Originally Posted by Coleydog

Well you got me thinking, just checked on a 318 mopar in 70 & 69, 70 was 185, 69 - 172. Really, was there that much difference between the two? Hope someone who runs one can chime in.
Sorry if I jumped rails here.
Mike
The factor for the 70 is 15.32 and the 69 is 16.70. What class are these?
Mike

70 would be O/S and the 69 would run P/S

Mark Yacavone · 12-15-2017, 11:11 PM

Mr Money, It really doesn't matter what the exact number is. Both will run way under.
They run J and K/SA with a 4 bbl ,and R and T with a 2bbl, and you're better off being in R and T.

12-14-2017, 08:27 PM	#1
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 637 Likes: 27 Liked 254 Times in 78 Posts	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. __________________ Mike Moller NHRA 203 Q-R-T/SA

12-15-2017, 02:25 AM	#2
Tom Moock Senior Member Join Date: May 2004 Posts: 801 Likes: 1 Liked 10 Times in 6 Posts	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. __________________ Tom Moock 5704 STK

12-15-2017, 08:27 AM	#3
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,629 Likes: 1,922 Liked 10,681 Times in 2,222 Posts	Re: Switch to 2bbl Mr. Billy uses the SWAG method. With Billy it's science! __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

12-15-2017, 09:05 AM	#4
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,486 Likes: 3,587 Liked 7,683 Times in 1,731 Posts	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. __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K

12-15-2017, 12:33 PM	#5
Tom Moock Senior Member Join Date: May 2004 Posts: 801 Likes: 1 Liked 10 Times in 6 Posts	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. __________________ Tom Moock 5704 STK

12-15-2017, 02:52 PM	#6
Coleydog Senior Member Join Date: Jul 2014 Posts: 569 Likes: 36 Liked 53 Times in 38 Posts	Re: Switch to 2bbl Well you got me thinking, just checked on a 318 mopar in 70 & 69, 70 was 185, 69 - 172. Really, was there that much difference between the two? Hope someone who runs one can chime in. Sorry if I jumped rails here. Mike The factor for the 70 is 15.32 and the 69 is 16.70. What class are these? Mike Last edited by Coleydog; 12-15-2017 at 05:44 PM.

12-15-2017, 11:11 PM	#9
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,809 Likes: 2,900 Liked 5,113 Times in 1,948 Posts	Re: Switch to 2bbl Mr Money, It really doesn't matter what the exact number is. Both will run way under. They run J and K/SA with a 4 bbl ,and R and T with a 2bbl, and you're better off being in R and T. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

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