L76 vs. Big Ugly Question...
Thread Starter
On The Tree
Joined: Mar 2008
Posts: 135
Likes: 2
From: Austin, Texas
L76 vs. Big Ugly Question... Putting together a 6.0L. Using stock GM Parts L92 heads, and was thinking of doing the L76 intake & throttle body, injector kit from GM parts. Will it make more power than the "big ugly" truck manifold? What kind of power can I make with untouched L92's, stock short block, cam & longtubes? Going into a 69 F Body with a T56. I know the L76 is DBW VS. the stock 6.0L cable driven, but I'm not worried about the difference in the harness and getting the pedal. Mainly curious about the power difference with the intakes. Input is greatly appreciated.
TECH Resident
Joined: Apr 2008
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From: Right here, right now!
Truck manifold has longer runners and larger plenum for better low end torque. Flipside is that there is some power given away up top.
May be more of a question of whether the truck manifold will fit under the bonnet.
May be more of a question of whether the truck manifold will fit under the bonnet.
Thread Starter
On The Tree
Joined: Mar 2008
Posts: 135
Likes: 2
From: Austin, Texas
Clearance is a good point but I think guys have run the truck intake under 1st gen F-Body w/ the 2 1/2" cowl hood. So is the LS3 intake the L76? Also, one more question... Thinking about maybe stepping up to the CNC'd L92s like Scoggin Dickey offers. Is it worth it?
Ls3 and l76 are the same on the inside different on the outside, ls3 has bolt on map sensor l76 has clip on uses the same sensor as the ls1. May be more physical differences I'm no sure. Don't run the truck manifold I've heard you give up A ton compared to the small amount you get down low.
Teching In
Joined: Sep 2010
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From: Ft.Lauderdale, FL
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