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Manifold Comparison

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DragRacingSpirit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DragRacingSpirit Quote  Post ReplyReply Direct Link To This Post Topic: Manifold Comparison
    Posted: Oct/25/2021 at 5:26pm
I was wondering if anyone has done a detailed comparison between an Indy (SR Type) manifold and a HLR manifold.

I have both and run the Indy on my Spirit but also have an HLR on the shelf and have been thinking about doing a detailed comparison of the 2. Possible even a swap to compare numbers.

If anyone has ever done it before then I am asking for your results in the comparison so I can be lazier....lol

runner length ? By eyeball the runner length looks longer on the HLR

plenum size ? The HLR looks quite a bit taller. I would think that the plenum area is larger?

total cc's of the entire manifold ?

Anybody's input so I don't waste my time and try a swap for nothing.

437 cubic inch 3.9x4.225
Wide ported SR heads T&D offset shafts 
302cfm at .500
342cfm at .750
@.050 275/286
shift 7500
9.0's -1/4 @149 5.70's 1/8@121
1.26 60"
8" Treemaster/Turbo 400 and brake




Edited by DragRacingSpirit - Oct/25/2021 at 9:09pm
Best 1/4 mile 8.99, 1/8 mile 5.71, 60 foot 1.27, no power adders
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PROSTOCKTOM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PROSTOCKTOM Quote  Post ReplyReply Direct Link To This Post Posted: Oct/25/2021 at 6:23pm
What's that car weigh Rob?  I am going out a limb here and guess that so few people have a HLR intake that you're going to have to do the trial and error yourself. Let me get some popcorn and a Coke ready. I'll be waiting on the sidelines. Tongue

Tom
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1974 AMC Hornet Hatchback, Wally Booth Outlaw Nostalgic Pro Stock Race Car Project
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jpnjim View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/25/2021 at 7:31pm
HLR High rise intake volume:
 16.5 cups or 3.9 liters




^done with cups of water and duct tape,
so not exactly lab quality results,
 but I measured 3.9L of volume out of a HLR intake a few years ago.


71 P-code 4spd Javelin/AMX
some Jeeps and some Fords
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/25/2021 at 7:35pm
All results were:


Dual Planes


Edelbrock SP2P (66-69 version)                     1.5 Liters  (6.4 cups)


Edelbrock Performer #2131                          2.5 Liters (10.5 cups)


Performer RPM #7581 Air Gap                        2.6 Liters (11 cups)

 
Edelbrock R4B 1970+                                          4.0 Liters (17 cups)





Single planes:


Edelbrock Torker #3930                                   2.72 Liters (11.5 cups)


Offy Dual Quad with 1/2" spacers                           3.8 Liters (16 cups)


HLR High rise intake (ported)                                      3.9 Liters (16.5 cups)


Edelbrock UR-18 with UR-11 Dominator top       5.32 Liters (22.5 cups)


Edelbrock UR-18 with Weiand 1911 top             5.55 Liters (23.5 cups)


Edelbrock (original) STR-11 70' up Crossram     9.32 Liters (39 cups!)


Since the last time I measured I've gotten one of the new Edelbrock single planes,
 but haven't measured it.

I never had an Indy to measure,
 but if you ever measure yours maybe you can add it to that thread Smile
71 P-code 4spd Javelin/AMX
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DragRacingSpirit View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DragRacingSpirit Quote  Post ReplyReply Direct Link To This Post Posted: Oct/25/2021 at 8:14pm
i have an extra Indy (SR style) on the shelf as well as the HLR, I can get the total volume figure fairly easily.

Some plastic, silicone, and water....that will be easy to get a figure on !


Edited by DragRacingSpirit - Oct/25/2021 at 9:38pm
Best 1/4 mile 8.99, 1/8 mile 5.71, 60 foot 1.27, no power adders
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DragRacingSpirit Quote  Post ReplyReply Direct Link To This Post Posted: Oct/25/2021 at 8:21pm
2650 with my fat rump


Edited by DragRacingSpirit - Oct/25/2021 at 8:23pm
Best 1/4 mile 8.99, 1/8 mile 5.71, 60 foot 1.27, no power adders
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Post Options Post Options   Thanks (2) Thanks(2)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2021 at 10:54am
My favorite manifold is the Dominator Torker by Barry Allen.
I am anxious to try the edelbrock original version of the HLR manifold. It has a 1" shallower plenum.
The Indy has the same depth plenum as the HLR.
 
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Post Options Post Options   Thanks (2) Thanks(2)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2021 at 10:58am
SC/Hurst Rambler

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Post Options Post Options   Thanks (1) Thanks(1)   Quote Hurst390 Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2021 at 11:00am
I copied the Barry Torker. I used a 2" hougan bit to cut the cloverleaves. then went back in with a mill to cut the remaining material. Then I welded the homemade flange on and did the finish work with a die grinder.
I'm going to try it next year on my edelbrock head combo pulling the victor manifold off.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpnjim Quote  Post ReplyReply Direct Link To This Post Posted: Oct/30/2021 at 1:55pm
Originally posted by Hurst390 Hurst390 wrote:

I copied the Barry Torker. I used a 2" hougan bit to cut the cloverleaves. then went back in with a mill to cut the remaining material. Then I welded the homemade flange on and did the finish work with a die grinder.
I'm going to try it next year on my edelbrock head combo pulling the victor manifold off.


Nice job!

If the Dominator/Torker outperforms than the Victor in 2022......


would you modify the Victor to take a 4500 flange and try that in 2023? SmileLOL
71 P-code 4spd Javelin/AMX
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