Is this for real? (intake)
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Joined: Aug 2001
Posts: 311
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From: Saint Louis, MO, USA
Car: 91 Formula
Engine: 305 TBI
Transmission: 700R4
Is this for real? (intake)
Quote from http://www.goingfaster.com/spo/325_h...hevrolet.html:
Would an Edelbrock Performer (or similar intake swap) intake instal really give a 20hp/24ft-lb increase, by itself, like this article says? I was under the impression that the actual difference wasn't necessarily that significant... what was your experience with power increase, if you happened to do an intake swap by itself?
305 BUILD-UP PART 1.
Car Craft started out with an 80,000 mile (130,000km) 305 LG4 engine from a 1982 Camaro. They removed the engine from the Camaro and put it straight on the dyno with headers, 3" dual pipes to Flowmaster mufflers, and a HEI distributor with 22 deg total advance. This gave a baseline dyno result of:
197 HP @ 4,000 rpm. 261 ft/lb torque @ 3,100 rpm.
305 BUILD-UP PART 2.
Added an Edelbrock Performer EGR intake manifold, but with the EGR blocked off.
217 HP @ 4,200 rpm. 285 ft/lb torque @ 3,300 rpm.
This is an increase of 20 HP and 24 ft/lbs over stock.
Car Craft started out with an 80,000 mile (130,000km) 305 LG4 engine from a 1982 Camaro. They removed the engine from the Camaro and put it straight on the dyno with headers, 3" dual pipes to Flowmaster mufflers, and a HEI distributor with 22 deg total advance. This gave a baseline dyno result of:
197 HP @ 4,000 rpm. 261 ft/lb torque @ 3,100 rpm.
305 BUILD-UP PART 2.
Added an Edelbrock Performer EGR intake manifold, but with the EGR blocked off.
217 HP @ 4,200 rpm. 285 ft/lb torque @ 3,300 rpm.
This is an increase of 20 HP and 24 ft/lbs over stock.
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Joined: Jul 1999
Posts: 15
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From: Columbia, Mississippi, USA
Car: 1990 Pontiac Firebird Formula
Engine: 5.0 liter LB9 TPI
Transmission: MM5 Borg Warner T5 5 speed manual
Axle/Gears: G80 9 bolt Borg Warner posi / rear
The correct link to the article is http://www.goingfaster.com/spo/325_h...chevrolet.html 
I believe what you are looking at is raw horsepower, that is, with no accessories and no parasitic power loss. With all accessories in place, with the motor in the car, you would notice less power gain than advertised at the rear wheels. This is gross (flywheel) horsepower gain, not net (rear wheel) horsepower gain.
I believe what you are looking at is raw horsepower, that is, with no accessories and no parasitic power loss. With all accessories in place, with the motor in the car, you would notice less power gain than advertised at the rear wheels. This is gross (flywheel) horsepower gain, not net (rear wheel) horsepower gain.
Last edited by Black Echo; Jan 25, 2002 at 09:49 AM.
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