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Old 10-26-2014, 11:40 AM   #1
ss wannabee
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Default older Holley intake manifold ?

Is the older Holley Strip Dominator SBC intake worth playing around with?
Think the part # was 300-2. At one time...maybe too long ago...believe it was a
favorite in the lower SS classes especially the 283's...

Probably would be a good "fit" with my "nostalgia" 283/220hp SS build? I call
it "nostalgia" due to lots of old parts and no $$ for upgrade!

Heard that there might have been 2 versions of the 300-2? Any Holley intake
"specialists" out there?
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Old 10-26-2014, 04:04 PM   #2
Adger Smith
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Default Re: older Holley intake manifold ?

Post your question on Speed talk and wait for Walter (Randy) Malik to answer. He Knows Holley.
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Old 10-26-2014, 05:44 PM   #3
ss wannabee
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Default Re: older Holley intake manifold ?

I'll look into that....thanks Adger!
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Old 10-29-2014, 03:12 AM   #4
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Default Re: older Holley intake manifold ?

"can anybody give me some insight/history on the different strip dominator intakes for a sbc? Anybody use any one of these intakes? what works for what sbc application?

I have an older one 300-2 somebody told me its for a 4 speed engine.

There is a 300-25 thats has taller runners for automatics?

and the 300-100 looks like a 1" spacer has been cast integral to the intake.

Any info is greatly appreciated."

I found this on a Speed Talk Forum. I saw a lot of Strip Dominator manifolds on the IHRA production Super Stockers. The engines were kinda like a econo modified engine. I noticed when I started going to NHRA races you saw Edelbrock on the Super Stock cars. I never knew if this was due to who was paying contengency where or if it was due to the different needs of the two styles of engines. My brother ran a strip dominator (can't remember which one) on an IHRA SS/ production 283 engine a couple of decades ago. It had been re-worked and had the runners in the plenum extended. The car was a 3800+ pound wagon with a 6:83 dana and a 2:75 low gear turbo, Huge 2 bbl. Holley, 292 turbo heads with titanium valves, aluminum rods, and some very high compression. The engine was back before dynos were common so we don't if the intake made good low RPM torque or not but the engine saw very little low to midrange RPM and would rev like a chainsaw. I don't know if the Strip Dominator would be the hot tip for a NHRA style 283 with the small carb, small heads and flat top pistons. I know there was some discussion of filling in some of the plenum with epoxy to cut down on plenum volume with the small engine but he sold the IHRA car and went NHRA racing before trying it. Hope this rambling helps, Don Jackson
Edit, after looking at Strip Dominator photos on the internet the wagon had the 300-25, the 300-2 looks to have curved runners and be shorter.

Last edited by Bench Racer; 10-29-2014 at 03:30 AM.
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Old 10-29-2014, 03:19 AM   #5
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Default Re: older Holley intake manifold ?

Contact Randy : rmcomprandy@yahoo.com
He will answer your questions most of the time and sometimes it won't be what you want to here, but it will be a good answer. (shoots straight)
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Old 10-29-2014, 09:41 AM   #6
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Default Re: older Holley intake manifold ?

Thanks guys...Adger, I went over to that site but didn't have the time to check it out
fully. And thanks for the e-mail address...I'll try and contact him as well...

Don, I was told years ago that the earlier Holley...being smaller...was better for the
little engines...at least out of the box with no mods. But being "shorter" confuses the
issue...especially running the automatic...and needing longer runners...

I've looked at several 300-25's though...at swap meets...and they seem quite large
internally..and would need some work...for a smaller engine. Realize that these
manifolds are for all SBC's...and they have to be somewhat big to cover all c.i.'s....

Not familiar with the 300-100...got some swap meets coming up...and will look for all
of them...Just wanted to have a Holley around to compare with the Victor Jr. and the
Victor 4x4 I have now....but the car is not finished yet.

Don...was your brother's car that '58 Chev wagon?
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Old 10-31-2014, 11:25 PM   #7
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Default Re: older Holley intake manifold ?

Yes, it was the 1958 2 door Chevy Yeoman, almost 2 tons of fun lol. Don Jackson
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Old 11-01-2014, 08:13 AM   #8
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Default Re: older Holley intake manifold ?

Years ago we used to fill the 300-25 with epoxy to lessen the cross section. They were quite large. I had one on my old 292" C/SM Camaro. Garley Daniels put me onto Dave Jarvis (Air Speed Engineering) to have one done. Even that 9000 RPM stick car liked the runners filled. Leaves you a lot of leeway for tailoring it to your engine, if you can shut the hood. Pretty tall after you add your spacers. Best flowing manifold I ever tested, filled or not. With simple port matching, it was the only manifold I've ever seen that made my Lee Shephard C/SM heads flow 1 to 2 CFM more than the radiused entry plate, at least on my self-built flow bench.
I bought a couple of Edelbrock and one Offy due to people's claims of them making more power. I had never had access to a dyno back then, (weren't many around in the 1970s) but none ever went down the race track as fast as the 300-25 manifolds did on my car. I would guess they might need a lot of epoxy on an automatic car.
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Old 11-01-2014, 10:12 AM   #9
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Default Re: older Holley intake manifold ?

The 300-2 is/was a good intake, but it seems the 300-25 almost always made as much or nearly as much peak HP, and the average HP was always better, as was peak torque and average torque.

I don't think there is such thing as an intake that works "out of the box" or "as is" for a Super Stock engine, at least not any where near as good as it could.
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Old 11-01-2014, 07:20 PM   #10
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Default Re: older Holley intake manifold ?

Quote:
Originally Posted by Ed Wright View Post
Years ago we used to fill the 300-25 with epoxy to lessen the cross section. They were quite large. I had one on my old 292" C/SM Camaro. Garley Daniels put me onto Dave Jarvis (Air Speed Engineering) to have one done.
I bought a couple of Edelbrock and one Offy due to people's claims of them making more power. I had never had access to a dyno back then, (weren't many around in the 1970s) but none ever went down the race track as fast as the 300-25 manifolds did on my car. I would guess they might need a lot of epoxy on an automatic car.
Ed, Garley helped dad obtain one of Jarvis intakes for his 283 auto sometime around mid to late 70's. It has a lot of epoxy work and made more power on Garley's dyno than the old style victor jr. I currently have it on the car now as I was unable to obtain the matching intake from Mike when I bought his used 520 heads last year. I recently updated dad's 283 to run ss again after nearly 30yrs. Plans are to get a reworked victor jr to compare later.

Ed
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