Well if this doesn't beat all

[1980RS]

Last month I lent out my ported Vic Jr. to a friend that was going racing at a track over by Milwaukee. He asked if he could test that Vic. Jr. I have "sure it don't work on my combo" So last night I get a call with him telling me he swapped intakes and with a little tuning his car went from 10.96 to 10.65 and picked up over 3 mph with the Vic Jr. on his 421 SBC, I was like WTF. I was like "my car was a mutt with it" but he goes on to tell me his 421 pull like a freight train to over 7500 with it. Apparently I needed to try this intake on a bigger engine some day. Glad someone got the thing to work.

[steve cowan]

Last month I lent out my ported Vic Jr. to a friend that was going racing at a track over by Milwaukee. He asked if he could test that Vic. Jr. I have "sure it don't work on my combo" So last night I get a call with him telling me he swapped intakes and with a little tuning his car went from 10.96 to 10.65 and picked up over 3 mph with the Vic Jr. on his 421 SBC, I was like WTF. I was like "my car was a mutt with it" but he goes on to tell me his 421 pull like a freight train to over 7500 with it. Apparently I needed to try this intake on a bigger engine some day. Glad someone got the thing to work.

Nice pick up for sure.
What was the intake your friend had on the 421.?
Vic jnr can be made to work well,I have over 20 hrs of porting in mine.

[Bigchief632]

Last month I lent out my ported Vic Jr. to a friend that was going racing at a track over by Milwaukee. He asked if he could test that Vic. Jr. I have "sure it don't work on my combo" So last night I get a call with him telling me he swapped intakes and with a little tuning his car went from 10.96 to 10.65 and picked up over 3 mph with the Vic Jr. on his 421 SBC, I was like WTF. I was like "my car was a mutt with it" but he goes on to tell me his 421 pull like a freight train to over 7500 with it. Apparently I needed to try this intake on a bigger engine some day. Glad someone got the thing to work.

In 2002 we did a back to back on a Vortec 406 on the dyno that made a little over 500hp. It made a lot more with the air gap than the Super Victor with the plenum ported. A lot more as far as Tq, not suprising, but in the rpm range it ran. It actually did make about 4 more hp with like 4 inches of spacer stacked on the intake, and it took all the spacer to make a HP gain. It's all application specific. If it was a more snorty combo, I am sure the Super Victor would have been better.

[F-BIRD'88]

Might want to re-Try that ported Vic JR on your engine.
If you engine is smaller CID. say a 383 sbc. might want to try speeding up the port air flow speed in the intake.

Could make up a "Turtle" that fills the floor of the plenum a bit AND extends into the runners as much as you dare.
Might have to make it a 2 piece turtle to get it in and out.

+/- modify the "turtle by adding epoxy +/-.

See what happens.. Ignor flow bench air flow test.
You are looking to fine tune it for Plenum/Port air SPEED on YOUR engine. Let the chips fall where they may.
As long as the car ET picks up. the Flow bench does not matter. Try it.

"W-E-W" is just right.

[1980RS]

Last month I lent out my ported Vic Jr. to a friend that was going racing at a track over by Milwaukee. He asked if he could test that Vic. Jr. I have "sure it don't work on my combo" So last night I get a call with him telling me he swapped intakes and with a little tuning his car went from 10.96 to 10.65 and picked up over 3 mph with the Vic Jr. on his 421 SBC, I was like WTF. I was like "my car was a mutt with it" but he goes on to tell me his 421 pull like a freight train to over 7500 with it. Apparently I needed to try this intake on a bigger engine some day. Glad someone got the thing to work.

Nice pick up for sure.
What was the intake your friend had on the 421.?
Vic jnr can be made to work well,I have over 20 hrs of porting in mine.

Seems to me Steve, he was running a Team G that had the built in 1" spacer in it.

[steve cowan]

Last month I lent out my ported Vic Jr. to a friend that was going racing at a track over by Milwaukee. He asked if he could test that Vic. Jr. I have "sure it don't work on my combo" So last night I get a call with him telling me he swapped intakes and with a little tuning his car went from 10.96 to 10.65 and picked up over 3 mph with the Vic Jr. on his 421 SBC, I was like WTF. I was like "my car was a mutt with it" but he goes on to tell me his 421 pull like a freight train to over 7500 with it. Apparently I needed to try this intake on a bigger engine some day. Glad someone got the thing to work.

Nice pick up for sure.
What was the intake your friend had on the 421.?
Vic jnr can be made to work well,I have over 20 hrs of porting in mine.

Seems to me Steve, he was running a Team G that had the built in 1" spacer in it.

I have one of those intakes,they are small in CSA at runner opening in plenum, especially for those cubes and rpm.
Your Vic jnr must have some area to feed a 421 for 7500rpm??

[ChopperScott]

Seems to me Steve, he was running a Team G that had the built in 1" spacer in it.

That's the 7531. I had that on my 355. I still have it. I've never considered running it on my 434, but it is a great intake manifold for smaller displacement.

[1980RS]

Nice pick up for sure.
What was the intake your friend had on the 421.?
Vic jnr can be made to work well,I have over 20 hrs of porting in mine.

Seems to me Steve, he was running a Team G that had the built in 1" spacer in it.

I have one of those intakes,they are small in CSA at runner opening in plenum, especially for those cubes and rpm.
Your Vic jnr must have some area to feed a 421 for 7500rpm??

If he gets to go out again he wants to try my ported S/V and my S/V 2. Now sure with winter coming on he well get to do that.

[steve cowan]

Seems to me Steve, he was running a Team G that had the built in 1" spacer in it.

I have one of those intakes,they are small in CSA at runner opening in plenum, especially for those cubes and rpm.
Your Vic jnr must have some area to feed a 421 for 7500rpm??

If he gets to go out again he wants to try my ported S/V and my S/V 2. Now sure with winter coming on he well get to do that.

That would be a good test,especially if you knew length and area of each manifold

[mag2555]

Between a 383 and a 421 with all things being equal the 421 is putting 10% higher air velocity thru the complete intake system, and the rate of runner expansion may have better suited the 421 also!

[Walter R. Malik]

I have never seen a Holley 25 run bad on anything but, some others can run better.

[Dan Timberlake]

"I have never seen a Holley 25 run bad on anything"HOLLEY STRIP DOMINATOR INTAKE - CHEVY SMALL BLOCK V8


Part # 300-25 ?? Strip Dominator Intake Manifold 1957-1986 262ci-400ci, 1987-later with Aluminum Heads

[Bigchief632]

The Holley 300-25 is still to this day one of the best intakes ever made for the sbc, in that 500-600hp range. Hard to beat. It'll make 20+ on a victor Jr with a lot more tq, almost matching the dual planes down low. If I can dig it up on my phone, I did a DNA headed 396/350 based deal not long ago that made 553hp and 510 ftlbs with an off the shelf Erson Hydraulic roller, 10.5:1, otb HP750 carb, cheap street strip oil pan and am untouhed by a grinder, bolted right on, 300-25. I did a mild port job on the heads, and installed 2.055 intake valves and did a better valve job.

[65dragster]

I know I would be very interested in seeing the Bigchief632 combo (cam specs) and dyno details.

[F-BIRD'88]

I had the Holley 300-25 on my Ported 305 HO head, big solid cam, high compression poor man's racer 350 sbc.
I really liked that intake. The best single plane I ever used. AND no off idle tip in flat spot like some other single planes. It drove great and lots of top end power and rpm.