Air-gap or victor jr ??
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Supreme Member
Joined: Apr 2004
Posts: 1,077
Likes: 0
From: Denver, CO
Car: cleanest '86 sport coupe around!!
Engine: 355ci twin 66mm turbos on e85
Transmission: built rmvb th400 w/ t-brake
Axle/Gears: 3.23
Air-gap or victor jr ??
here's the combo for my sport coupe that will be underway pretty soon:
350 4 bolt main bored .030 over
steel crank, rods and forged speed pro pistons, 9:8:1 static comp.
edelbrock perf. rpm alum. heads 170cc/70cc, 2.02/1.60
edelbrock air-gap dual plane manifold with 750 holley DP
crane cams hyd. flat-tappet 218/228 dur. @.050 and .454in/.480ex @ .050
NX hitman nitrous kit (150 shot)
edelbrock victor series mech. pump (130gph along with a small holley 45gph booster pump near the tank).
aeromotive boost ref. return style fpr.
I know the cam is kinda conservative but I want it to be civilized on the street where it will spend most of its time as we only get a short track season out here. The qusestion is, do i have anything thing to gain from the vic jr over the air-gap? an engine builder recently told me that with else all being equal, the difference between the two on the same motor will not be as dramatic as people make it out to be. He said i'll lose a few ft lbs at the bottom but barely noticeable, if at all...and i'll still have a superior flowing manifold in case i decide to swap cams and /or cylinder heads later.
350 4 bolt main bored .030 over
steel crank, rods and forged speed pro pistons, 9:8:1 static comp.
edelbrock perf. rpm alum. heads 170cc/70cc, 2.02/1.60
edelbrock air-gap dual plane manifold with 750 holley DP
crane cams hyd. flat-tappet 218/228 dur. @.050 and .454in/.480ex @ .050
NX hitman nitrous kit (150 shot)
edelbrock victor series mech. pump (130gph along with a small holley 45gph booster pump near the tank).
aeromotive boost ref. return style fpr.
I know the cam is kinda conservative but I want it to be civilized on the street where it will spend most of its time as we only get a short track season out here. The qusestion is, do i have anything thing to gain from the vic jr over the air-gap? an engine builder recently told me that with else all being equal, the difference between the two on the same motor will not be as dramatic as people make it out to be. He said i'll lose a few ft lbs at the bottom but barely noticeable, if at all...and i'll still have a superior flowing manifold in case i decide to swap cams and /or cylinder heads later.
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Yea, I agree... stick with the dual plane, the Vic Jr. would be way overkill on your engine. You don't have enough heads or cam to make use of a big single plane.
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Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
There is absoluetly no reason to run a V. Jr. on the street. The Airgap will make more hp up to about 6000 rpm than the V. Jr.
Thread Starter
Supreme Member
Joined: Apr 2004
Posts: 1,077
Likes: 0
From: Denver, CO
Car: cleanest '86 sport coupe around!!
Engine: 355ci twin 66mm turbos on e85
Transmission: built rmvb th400 w/ t-brake
Axle/Gears: 3.23
well i guess its the air-gap then because i was looking at the rpm range for the vic jr. and i definitely don't have enough motor to take advantage of it. Thanks guys!
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