Best LS7 sheetmetal intake
Looking to upgrade from a Fast 102 intake to a shorter runner sheetmetal intake to move the torque curve higher. We are seeing a drop in MAP at higher RPM. What is the best choice that will fit under a stock hood?
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I have been looking also. Seems like Wilson or Precession Metalcraft are the choices. Most like the carb style with an elbow for power increase.
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I'm interested also...
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Been looking around and it seems like Marcella, Precision Metal Craft and OZMO have the best looking manifolds. I particularly like the look of the OZMO velocity stacks:
OZMO AL Intake Manifold3 | Flickr - Photo Sharing! |
Originally Posted by bigdogracing
(Post 1583884719)
Been looking around and it seems like Marcella, Precision Metal Craft and OZMO have the best looking manifolds. I particularly like the look of the OZMO velocity stacks:
OZMO AL Intake Manifold3 | Flickr - Photo Sharing! |
I like Precision Metal Craft intake manifold but what would be the gains over a ported Fast 102...? I'd just like the sheet metal intake for piece of mind when I run spray...
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I don't know about hood clearance on a Corvette, but the factory COPO Camaro uses a cast aluminum short runner intake manifold from Holley, on their 427 with 13.5 CR and a hot cam..
•Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block. •Total Height with 92/102mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block. •Port Size – 2.49” Height x 1.21” Wide •Mounting Flange Gasket Type – Standard LS3 Molded O-Ring •Plenum Top Gasket Type – 3/32” Round O-ring Cord •Throttle Body Flange Location, with 92/102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical) •Runner Length – 6.29”, As-Cast Runner Cross-Sectional Area – Tapered 4.67inē to 2.84 inē |
Originally Posted by FN FAST
(Post 1583889489)
that plenum is hideous.... not even in the same league as Marcella
http://i1058.photobucket.com/albums/...n/d6861fac.jpg http://www.yellowbullet.com/forum/sh...=464889&page=4 |
It looks like something I could build, lol. Take a look at those welds in the link you posted ( OZMO AL Intake Manifold1 | Flickr - Photo Sharing!) . The black is just polishing compound they neglected to get off, but the weld itself is still crap. He either need to get some more practice or get really well acquainted with a grinder. A Marcella on the other hand looks like someone tipped over a roll of quarters. Also, Andreas isn't the fastest anymore... Tom Kempf went 6.71 @ 204 last weekend
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try this... http://flic.kr/p/ejiE17
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I think we will be going for this absolutely gorgeous manifold, and similar price to a custom sheetmetal + it will fit under a stock hood. Possibly try to run twin TBs, but I am not sure if we can get them to fit - maybe switch to the LS9 style TBs as they don't have a large motor hanging off the side.
http://farm9.staticflickr.com/8475/8...bdf0806f_b.jpg |
Sheet metal intakes with short runners look great. However, all my research shows that low end torque will take a dump. The hi-ram Holley might be an option.
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Pity its too tall for the Z
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All the top manufactures are pretty comparable from what I've seen.
You ready for the massive hit down low? |
Don't get a sheetmetal intake with less than a 7" runner.....ask me how I know ;)
Plan on a slightly taller hood! |
Originally Posted by JMB
(Post 1584427051)
Don't get a sheetmetal intake with less than a 7" runner..
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Originally Posted by JMB
(Post 1584427051)
Don't get a sheetmetal intake with less than a 7" runner.....ask me how I know ;)
Plan on a slightly taller hood! |
I also forgot about Berry Motorsport's!! They do some pretty badass billet intakes!!
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My car is a turd under 5500 or so, but it has nothing to do with my Marcella intake!! I have a ton of overlap compared to 95% of the cammed Z's on this site.. If I had room to run more lift and not be so aggressive on the duration |
It sounds like your combo may not have been optimized with the cam and intake piping diameter & length up to the throttle body. |
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