Air Gap vs. Victor Jr.

FlacoMalo · Dec 30, 2010

406 ci
10.2 CR
cast 400 crank, 2 bolt block
forged rods 3.75, forged pistons (keith black pistons)
Roller cam 490 lift
Roller rocker 1.6
AFR 195 (older AFR heads the ones that have just the "A" embosed on the side of the heads)
RPM Performer
Quick fuel 750
MSD dist. and 6AL box
Summit polished long tube headers 1 5/8
x-pipe to flow master 40/40 (2.5 in all the way back)
10 bolt 8.5 with 3.73 gear
TKO 600 5 spead (.64 5th gear)
slide-a-link traction bars

Which intake would you recommend for this application (Air Gap or Victor Jr.) of a street/strip car.

markw · Dec 30, 2010

Air gap. Why only .49 lift? Why 1 5/8 headers? With that cam and those headers put a 650 dp on it!

CMQuickcoupe · Dec 30, 2010

markw said:
Air gap. Why only .49 lift? Why 1 5/8 headers? With that cam and those headers put a 650 dp on it!

I agree only need the airgap and to much carb for your combo and you would probably benifit from bigger headers to help the heads breath.One question though how do you like the slide a links?

chevguy65 · Dec 30, 2010

Stay with the dual plane.

Your combo looks fine.

1972lt1 · Dec 30, 2010

I switched my 72 Z28's LT-1 from a dual plane Edelbrock to a performer rpm air gap manifold. Lost a little bottom end but it's winding higher than before. Just a warning, the front of the manifold where the alternator bracket bolts to is taller than stock. You will need a 76-81 alternator top bracket. The stock lower one is still ok to use.

71454Chevelle · Dec 30, 2010

What are all of the cam specs? (duration, lsa)

I'd say stick with the dual plane. :yes:

chevguy65 · Dec 30, 2010

I switched my 72 Z28's LT-1 from a dual plane Edelbrock to a performer rpm air gap manifold

The rpm air gap is a dual plane intake.

DOUG G · Dec 30, 2010

I'd say AirGap out of those 2.
I had a 280H (.480 lift) cam and the Performer intake with a 750DP Holley (4779) and it ran fine IMO

srode · Dec 30, 2010

If the engine's already built, I'd stick with the RPM you have, better places to spend money than on the air gap, I doubt you will see much difference if any. Definitely not the Victor, you'll lose ground with it.

Nashville Beth · Dec 30, 2010

I like your combo but I would switch the flowmaster 40's to 14" long super turbo mufflers.
The cops won't hear you coming and you won't lose any power.

67 Plum · Dec 31, 2010

srode said:
If the engine's already built, I'd stick with the RPM you have, better places to spend money than on the air gap, I doubt you will see much difference if any. Definitely not the Victor, you'll lose ground with it.

X2 waste of money to change from RPM to air gap IMO.

mark191 · Dec 31, 2010

I will swap you staight up my victor jr. for your rpm. :thumbsup:

Air Gap vs. Victor Jr.

FlacoMalo

markw

CMQuickcoupe

chevguy65

1972lt1

71454Chevelle

chevguy65

DOUG G

srode

Nashville Beth

67 Plum

mark191

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