manual or vac secondarys?
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Joined: Jan 2006
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From: waco,texas
Car: 1991 Pontiac Firebird
Engine: 383 LT1
Transmission: built 700r4 and fuddle 3500stall
Axle/Gears: 4th gen 3.42 auburn
manual or vac secondarys?
i have an edelbrock performer 1406 that i was planning on rebuilding cause im starting to get some idle problems and a huge wot bog that almost kills the car.
i was playing with the idea of getting a demon and looking on there site it said you should use vac secondarys on any auto but mechanical on manuals and autos with over a 3000stall
i have a mild h/c engine 503/510 224/230 112lsa p&p vortecs performer rpm airgap intake and hedman longtubes with true dual and an h pipe.
built 700r4 with a 3500stall fuddle converter.
would i see any performance gain going with a mechanical secondary?
forgive the dumb questions this is the first carb motor i have ever had. im pretty good with tuning the edelbrock and im ordering an lc1 on friday so i can wideband tune anything i get. need advice as to what kind and how big of a carb to get.
i was playing with the idea of getting a demon and looking on there site it said you should use vac secondarys on any auto but mechanical on manuals and autos with over a 3000stall
i have a mild h/c engine 503/510 224/230 112lsa p&p vortecs performer rpm airgap intake and hedman longtubes with true dual and an h pipe.
built 700r4 with a 3500stall fuddle converter.
would i see any performance gain going with a mechanical secondary?
forgive the dumb questions this is the first carb motor i have ever had. im pretty good with tuning the edelbrock and im ordering an lc1 on friday so i can wideband tune anything i get. need advice as to what kind and how big of a carb to get.
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: manual or vac secondarys?
I'd wait until you have the LC-1, then try to tune the edelbrock a bit. You might be able to get satisfactory performance out of it. You will see some performance upgrade going to a mechanical secondary, but is it worth $400 or so? Not for me
Re: manual or vac secondarys?
The 3500 stall in your converter will get you up in the RPMs real quick when you nail it. A DP will work well and hit harder than a VS with that combo. It's when you try to put a DP on with a tight converter that problems can arise with low RPM softness/bogs. With the loose converter you'll never be "lugging it" at a low RPM range.
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