Buick 3.8L with oem supercharger

roverman · August 15, 2016, 02:23:19 PM

Anyone done a performance increase, like a chip/etc. ? Did these engines get aluminum heads, like GN's ? Will the this blower support more boost ? Thanks, roverman.

MG four six eight · August 15, 2016, 09:20:30 PM

Art,

Yes you can! These guys https://zzperformance.com/3800/engine.html have pretty much everything for the 3800 and I have used them for my blower parts.
They came with cast iron heads which are different then the N/A 3800 engines. The valve covers are different as well.
The blower will indeed support more boost and I went with ZZ perf. modular pulley system which allows you to change pulley sizes without having to press the pulley on/off the blower input shaft.

Older 3800's came with GM/Eaton M62 blowers while the latter models came with a GM/Eaton M90. The M90 is a better blower for performance applications and in stock form you can overdrive it up to about 14,000 RPM (blower input shaft speed), after that blower efficiency drops off.

Bill

BlownMGB-V8 · August 16, 2016, 09:07:39 AM

The M90 made 16psi+ boost on my 215 Olds.

Jim

roverman · August 16, 2016, 05:58:01 PM

That's good info guys ! I'm considering a series II. Thanks, Art.

cowboyra · August 17, 2016, 07:59:52 AM

I had one in my 99 grand prix. I had a smaller pulley, cold air intake, 3" downpipe and a tune. approximately 300 hp.
Car ran 13.8s in the quarter. With better tires possibly could have hit 13.7s. I put 100,000 miles on it and never ever had a mechanical problem with the engine. I considered that motor for my TR6 but went with the lighter LS3

A side note: they sound terrible with loud exhaust. No music, just noise

roverman · August 17, 2016, 11:05:43 AM

Great ! Do you have a weight for LS3 ? L67 series II is said to weigh 392 lbs.

roverman · September 05, 2016, 10:56:03 AM

This skate board on steroids, was at a show yesterday. I wish I had asked for a ride, but owner and wife, were cleared for launch,(it WAS at an airport). He states 275hp, before tweeking and 1,400 lbs. This must be a G-wiz.....