4-71 blower???
01-10-2010, 08:31 PM
#1
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Car: 1991 Chevy Camaro RS
Engine: 350 Crate Motor
Transmission: T-5
Axle/Gears: 9-bolt Limited Slip
4-71 blower???
i have a chance of picking up a 4-71 blower for real cheap, was wondering if anyone knows anything about them and if it would fit on a small block 350?
01-10-2010, 08:42 PM
#2
Re: 4-71 blower???
IDK how blowers are rated but I _think_ it's something like--
4-71: adds 71 cubic inches of air to a 4 cylinder
6-71: adds 71 cubic inches of air to a 6 cylinder
etc...
It's been years since I heard some guys trying to tell each other what the numbers represent.
I may be wwwaaayyy off tho. I'm sure someone will educate us!!
4-71: adds 71 cubic inches of air to a 4 cylinder
6-71: adds 71 cubic inches of air to a 6 cylinder
etc...
It's been years since I heard some guys trying to tell each other what the numbers represent.
I may be wwwaaayyy off tho. I'm sure someone will educate us!!
01-10-2010, 08:50 PM
#3
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Re: 4-71 blower???
(4-cylinder/6-cylinder)4-71 are made & available for SBCs.....So is a 6-71 & a 8-71.
01-11-2010, 12:19 PM
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Re: 4-71 blower???
A 4-71 was originally a scavenging pump for a GMC 2-stroke diesel with 4 cylinders of 71 cu.in. The 6-71 was for 6 cylinders of 71 cu.in. Hotrodders adopted them as superchargers in the 50s and the terminology has stuck, even to things like the 12-71 and 14-71, which don't correspond to anything that GMC ever made.
It'll fit on an SBC if you get a manifold and belt setup for it.
It'll fit on an SBC if you get a manifold and belt setup for it.
01-17-2010, 12:50 PM
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Car: 89 RS camaro
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Re: 4-71 blower???
would that thing not need to be spun really high to make a decent amount of boost thus creating heat? dont know too much about roots style SC, especially a 4-71.
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