Supercharging and nitrous - The 1947 - Present Chevrolet & GMC Truck Message Board Network

The Blue Pig · 02-10-2003, 07:40 PM

Hey, I have a stock 5.7 in my 1990 silverado 2wd half ton, and I was wondering if anyone has tried supercharging one of these engines, or even given it a little shot of juice. How much boost do you think one of these would handle? Do you think you would be safe with more than a 75 shot, or not even do that? I dont know what the horsepower rating is on this engine, but it feels like about 68 horsepower is making it to the rear wheels, it kinda sucks. Just wondering. Oh, wait, its not stock. I am the proud owner of a K&N airfilter, it added 8 tenths to my times...

superchevy · 02-10-2003, 08:15 PM

Blue Pig, for everything and anything to do with TBI motors, go to www.thirdgen.org and read their TBI and Aftermarket boards. Those Camaro/Firebird guys are heavy into modifying the tbi motors. I've been a member there for a couple of years and picked up the little bit of knowledge I have from those guys.
SC

454ss_2 · 02-12-2003, 07:56 AM

Quote:

Originally posted by The Blue Pig
Hey, I have a stock 5.7 in my 1990 silverado 2wd half ton, and I was wondering if anyone has tried supercharging one of these engines, or even given it a little shot of juice. How much boost do you think one of these would handle? Do you think you would be safe with more than a 75 shot, or not even do that? I dont know what the horsepower rating is on this engine, but it feels like about 68 horsepower is making it to the rear wheels, it kinda sucks. Just wondering. Oh, wait, its not stock. I am the proud owner of a K&N airfilter, it added 8 tenths to my times...

Check out http://www.fullsizechevy.com there are many supercharged and guys that run nos on TBI engines.

02-10-2003, 07:40 PM	#1
The Blue Pig Thread Wizard Since 2002 Join Date: Apr 2002 Location: Fairbanks, AK Posts: 102	Supercharging and nitrous Hey, I have a stock 5.7 in my 1990 silverado 2wd half ton, and I was wondering if anyone has tried supercharging one of these engines, or even given it a little shot of juice. How much boost do you think one of these would handle? Do you think you would be safe with more than a 75 shot, or not even do that? I dont know what the horsepower rating is on this engine, but it feels like about 68 horsepower is making it to the rear wheels, it kinda sucks. Just wondering. Oh, wait, its not stock. I am the proud owner of a K&N airfilter, it added 8 tenths to my times... __________________ --70 C-10 Longbed --71 C-10 Longbed --72 K-20 Longbed --74 C-10 Shortbed --86 Toyota Tercel (His Driver) --05 Chevy Trailblazer (Her Driver)

02-10-2003, 08:15 PM	#2
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Blue Pig, for everything and anything to do with TBI motors, go to www.thirdgen.org and read their TBI and Aftermarket boards. Those Camaro/Firebird guys are heavy into modifying the tbi motors. I've been a member there for a couple of years and picked up the little bit of knowledge I have from those guys. SC __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396



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