Holley Street Dominator - BBC application
Thread Starter
Burning Brakes
Joined: Oct 2002
Posts: 914
Likes: 14
From: Aberdeen, Scotland
Holley Street Dominator - BBC application
Just heard from the engine builder that my old intake needs a little "too" much work. 
So, a hunt on fleabay turned up an "old" Holley Street Dominator for a BBC. I took a chance and did the buy it now. We'll see what it looks like when it gets "home".
Are there any details that I need to know about fitting it to my "stock" looking LS 5 when it is rebuilt? I run the stock BB hood. Do I need to run a different air cleaner?
What about any real HP improvements? We will have a look at porting it and it will be port matched. Any recommendations for ... coatings, or even something entirely too costly like extrude honing?
BTW this is going on a somewhat moded ... LS 5 with a forged 489 assy; Crower crank etc .. it should be nice.
carbster09
So, a hunt on fleabay turned up an "old" Holley Street Dominator for a BBC. I took a chance and did the buy it now. We'll see what it looks like when it gets "home".Are there any details that I need to know about fitting it to my "stock" looking LS 5 when it is rebuilt? I run the stock BB hood. Do I need to run a different air cleaner?
What about any real HP improvements? We will have a look at porting it and it will be port matched. Any recommendations for ... coatings, or even something entirely too costly like extrude honing?
BTW this is going on a somewhat moded ... LS 5 with a forged 489 assy; Crower crank etc .. it should be nice.
carbster09
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Which one? If it's the med-rise oval port dual plane one, without extensive work it's going to be done by ~5200 rpm anyway. Should that be enough, I'd just do a standard port match (to the heads, not the gaskets). Sorry, don't know what you'd have to do for hood clearance, but suspect a dropped base and perhaps 2" filter might be necessary.
An option you might be interested in, especially if OEM appearing kit is to your liking, is that you could always match an alum LS6 intake down to oval port heads with some epoxy, as another CF'er has done...
An option you might be interested in, especially if OEM appearing kit is to your liking, is that you could always match an alum LS6 intake down to oval port heads with some epoxy, as another CF'er has done...
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
I have seen myself a '72 BB that had a Holley street dominator intake with a Holley carb and 2 in. air cleaner all under a stock BB hood, so I'm quite sure it will fit OK, it seems they used something similar to the LT-1 dropped air cleaner base.
I have the same intake and I compared it to the stock dual plane one and the Holley is at least 3/4 in. higher.
I have the same intake and I compared it to the stock dual plane one and the Holley is at least 3/4 in. higher.
Thread Starter
Burning Brakes
Joined: Oct 2002
Posts: 914
Likes: 14
From: Aberdeen, Scotland
L 88 hood?
So are you running an L 88 hood there in Doha?
I suspected that I needed something like an LT 1 air cleaner... thanks for the input.
Do you think there is much to gain with an LS 6 intake port matched? It seems like alot of work; however I am willing to do it. Or try to find someone. I wanted to appear stock or stockish but the old L 79 intake is not the best and my stock LS 5 ... might not fit the bill.
Do you reckon the Holley street dom gives me anything over the stock LS 5? Other than the weight issue of course.
Someone really needs to design a decent intake to take advantage of this ... I was hopeful the Weiand Stealth would fit; but it doesn't.
carbster
I suspected that I needed something like an LT 1 air cleaner... thanks for the input.
Do you think there is much to gain with an LS 6 intake port matched? It seems like alot of work; however I am willing to do it. Or try to find someone. I wanted to appear stock or stockish but the old L 79 intake is not the best and my stock LS 5 ... might not fit the bill.
Do you reckon the Holley street dom gives me anything over the stock LS 5? Other than the weight issue of course.
Someone really needs to design a decent intake to take advantage of this ...
I was hopeful the Weiand Stealth would fit; but it doesn't.carbster
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Personally, I can't see where the LS6 intake would give any improvement versus the stock LS5 one, both of them are low rise and dual plane, while the street dominator is a little taller and its a single plenum which will help in mid-high RPM range.
I just picked a LT-1 dropped base from ebay and if it will fit my stock BB hood I would give that intake a try and compare it with the stock one back to back.
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Instructor
Joined: Jan 2009
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Just a note, having just fitted a 454, if I fit a 2 inch or 2.5 inch air cleaner it hesitates abouve 2,000 rpm with no load and even worse when driving - fine under full throttle when the secondaries open. Fit a 3 inch and its all good. It needs alot of air, and certainly mine doesnt breath properly with anything under a 3 inch air cleaner.
Just my two cents.
Lester
Just my two cents.
Lester
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Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Just a note, having just fitted a 454, if I fit a 2 inch or 2.5 inch air cleaner it hesitates abouve 2,000 rpm with no load and even worse when driving - fine under full throttle when the secondaries open. Fit a 3 inch and its all good. It needs alot of air, and certainly mine doesnt breath properly with anything under a 3 inch air cleaner.
Just my two cents.
Lester
Just my two cents.
Lester
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
Yesterday I receiver the LT-1 air cleaner base, its much deeper than what I have now. I made some measurement and it appeared that it would work great with the Holley street dominator intake, the base is 3/4 in. deeper and the carb base on the street dominator is 3/4 in. higher, so you'll end up with exactly the same 3 in. air cleaner height as the stock LS5 intake, which is a very good news.
Thread Starter
Burning Brakes
Joined: Oct 2002
Posts: 914
Likes: 14
From: Aberdeen, Scotland
thanks
Thanks for the input. The old fleabay special holley street dominator is on its way! I am debating, extrude hone, acid port or just send it off to the builder ....
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
I'm sure you'll love it, I was surprised with the quality of these old intakes, too bad they don't make them anymore! .. I will try to install my ASAP as I'm really curious to do a comparison.
Racer
Joined: Nov 1999
Posts: 331
Likes: 0
From: La porte Texas
I have run the 300-3 single plane Holley Street dominator on my 73' 454 950HP with summit G-3000 . Comes with 1 1/4" drop base , 3" filter , and chrome top ( $21.95. )I do have my choke tower milled off and have shortened the bowl vents .
