Re: SBM Air Gap mods?
[Re: cudadoug]
#1723638
01/07/15 01:00 AM
01/07/15 01:00 AM
|
Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
|
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
|
Not a air gap but a performer i put on my van that has like 150hp. Yours might not be this bad
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
|
|
|
Re: SBM Air Gap mods?
[Re: cudadoug]
#1723642
01/07/15 04:33 PM
01/07/15 04:33 PM
|
Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
|
I built a 402 SB with eddy heads, TTIs, 230@.050 hydraulic roller, and we ran a 650 double pumper, it was choking bad as the RPM climbed, started pulling vaccume and not pulling as hard as I thought it should. We had no room for a spacer and no bigger carb in the budget so I chucked a carbide in the router and milled out 3/4 inch of the divider from front to back and it would pull another 500 RPM. When we built it I did just a little radiusing in the plenum and some gasket matching... basic stuff. After eventually switching to a 750 it became a real animal pulling another 500 RPM more and now the hood and doors barely open and close (68 cuda).
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: SBM Air Gap mods?
[Re: cudadoug]
#1723643
01/07/15 10:55 PM
01/07/15 10:55 PM
|
Joined: May 2004
Posts: 12,383 Taxes & Virus's R-US, NY
Dragula
I Live Here
|
I Live Here
Joined: May 2004
Posts: 12,383
Taxes & Virus's R-US, NY
|
Quote:
Any flow bench numbers before/after to evaluate any gains??
No, but the entire fuel mixture cleaned right up. I was using a carb and it really liked the 1" open spacer and the cut down divider. Obviously port matching helped too, but it had a snappier rev to it, and it really liked it.
I did it in stages. I tried a 1/2" divided spacer first, then cut the divider down a bunch and used a 1" open spacer....I think it liked the added plenum the most. Then I switched to efi...
|
|
|
Re: SBM Air Gap mods?
[Re: Dragula]
#1723644
01/07/15 11:20 PM
01/07/15 11:20 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
I was just reading today in one of the Mopar mags that they are building a 416 with that intake and it showed a few pics and its mods.. not sure about flow numbers..this was part 2 of the artical.... sorry I dont recall which mag... but its on sale now
|
|
|
Re: SBM Air Gap mods?
[Re: cudadoug]
#1723648
01/08/15 10:30 PM
01/08/15 10:30 PM
|
Joined: Jan 2013
Posts: 39 MD
1965fish
member
|
member
Joined: Jan 2013
Posts: 39
MD
|
Sorry to hijack the thread but what kind of valve covers are these?
1965 Plymouth Barracuda Formula S 1965 Plymouth Valiant 200 Convertible 1965 Plymouth Valiant 200 Station wagon 408 6.52 @ 104 2001 Dodge Dakota 394 6.63 @ 103 1/8 mile 10.64 @ 123 1/4 mile 1965 Plymouth Valiant Signet 2DR HT
|
|
|
Re: SBM Air Gap mods?
[Re: cudadoug]
#1723650
01/08/15 11:03 PM
01/08/15 11:03 PM
|
Joined: Feb 2005
Posts: 20,154 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,154
PA.
|
I know it's a different intake but I did a fair amount of flowbench and porting on an ld340 intake and divider work paid little dividends Intake flange and radius attention was where the payoff was. The runners needed work but with the design of these intakes that was impossible. If you want to flow over 270-275 cam step up to a different manifold
Last edited by pittsburghracer; 01/08/15 11:14 PM.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
|
|