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Holley Hi ram

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Old Dec 16, 2017 | 10:56 AM
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Default Holley Hi ram

Ok, pro's and Con's on a Holly Hi Ram int ?
on a l9H with a cam, 2800 stall and LT's.
the truck is only 4150lbs, plenty of low end.
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Old Dec 16, 2017 | 08:00 PM
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Have a hi ram on my 370 in my 49 F1 and it’s def less in the low-mid range vs the Tbss intake but pulls harder up top. Overall the Tbss intake performs better but the looks of the hi ram make up for it lol
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Old Dec 17, 2017 | 10:22 AM
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Default Int

I thought the longer runners would work
better in the low-mid range on a 6.2.
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Old Dec 21, 2017 | 05:27 PM
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Originally Posted by turboal1
I thought the longer runners would work
better in the low-mid range on a 6.2.
Stock truck intake has longer runners then the high ram.
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Old Dec 21, 2017 | 05:39 PM
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I can't seem to find/remember which series it was, but one of the engine mythbusting youtubers out there did a dyno comparison between a stock variant of intake vs a high ram sheet metal style just like Holly's and found that it lost torque on the low end and didn't really show any considerable gains until beyond 6k.

Found it.

Last edited by BudRacing; Dec 21, 2017 at 05:58 PM. Reason: Adding video link
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Old Dec 21, 2017 | 06:00 PM
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Default Video

OK, the Holley is deff out of the mix.
Maybe i'll try the LS3 int.
pro's and Cons on that int.
my shift points are 6800 rpm's

Last edited by turboal1; Dec 21, 2017 at 06:09 PM.
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Old Dec 22, 2017 | 01:15 AM
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Originally Posted by turboal1
OK, the Holley is deff out of the mix.
Maybe i'll try the LS3 int.
pro's and Cons on that int.
my shift points are 6800 rpm's
just stick with the stock intake, car intake isn't any better and like the Holley looses low end tq. How come you shift it at 6800? Seems high for a stock head 5.3. A FAST LSXRT intake would be your next best bet but for the price of those I would just spray the truck lol.

Last edited by Three6GMC; Dec 22, 2017 at 01:25 AM.
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Old Dec 22, 2017 | 12:44 PM
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Default Not 5.3

I have a cammed 6.2 L9H Look at my sig.
looking for a little more top end, plenty of
low end. want to shift a little power upstairs.
going to have my tuner try to retune the VVT
for a diff power band. the truck int looks to fall
off to fast at higher RPM's
LSA swap sometime in late 2018
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Old Dec 23, 2017 | 01:08 AM
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Your sig mentions a comp cam. What are the specs?
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Old Dec 23, 2017 | 09:19 PM
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I'd say a holley high wouldn't be to bad on a 6.2. Espesially if your goal is to turn it higher.
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