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Old 11-23-2006, 07:39 PM
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454 victor jr or airgap

i've got a 454 bored to 468ci with merlin rectangle heads, victor r-2 intake, 800dp, 10-1 compression, solid 248/258@.050 with around 580/599 lift, power range 3,000 to 7,000 recommended power range 3,800-7,000, 2.25 hooker super comp's, 4.10 gears, 26 inch tall tires, th400 with a 3800 8 inch stall. car is a 67 firebird.

i was thinking of getting a victor jr to make it a little more streetable. anyone think it will make a difference? will it give me more power down low over the victor?

would a rpm airgap be too small for this engine and to shift at 6800r's?
how many r's are they really good for on a BB?
i know with amc rpm airgap not all cylinders get the same amount of gas so you have to mix match the jets. are the Chevy's one the same way?

thanks for your help.

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Old 11-23-2006, 08:22 PM
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To answer the last paragraph... No and No...

The Performer RPM with a little cleanup work should work fine for a 6800 rpm shift point... I run a reg Performer RPM oval port with valley pan and have seen 7K rpm shifts and never felt a nose over...

Also no jetting problems with the ones on the BBC`s that I know of...?

Assume they make a Performer RPM air-gap for rectangle ports...?
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Old 11-23-2006, 09:02 PM
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Agreed, you're on the edge of "needing" more intake, but not necessary. Some mild cleanup and you should be great.
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Old 11-24-2006, 10:38 PM
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ok, the airgap it is. i need to do something. i had to take it up to 4500- 5,000r's to get it moving good today. i'm also thinking the stall is flashing higher than 3800. it's supposed to be a turbo action 10 inch stall. if it's a off the shelf one. it's a lose one then


what do you guys think about maybe a tight 3400 stall that really flashes at 3400?

i'm also thinking of ditching the 2 1/4 headers for some 1 3/4. i hope they give me some more room in the engine compartment. it's really tight in there with those big headers.

i'm also going to have to work on the cooling. it's fine going down the road but i sat at a light for 4-5 minutes and it went from 180-190. it was only 70 here today. god help me when it's 94 i believe it has a 160 stat in it. but i'll have to check.

also i'm getting a little run on. a friend said timing and i'm thinking i need to mix some race fuel i'm starting to wonder if it really has 10 to 1.
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