I've been searching around for blowers for some time now. I was settled on the Weiand 142. Then I found the Weiand 144. I guess the differences aren't that huge except the 144 has Teflon rotors and a 10-rib belt setup.

Any reason why I would want one over the other?


Holley Performance Products

 

go with the 144...its a bit stronger in construction. Those two blowers flow approximately the same or veerry close.

 

The 144 sits the carb a smidge lower than the 142 also. Go check the measurement specs on Holley's website and you'll see there's a difference of about 1/2-3/4" in carb height. No, you still can't fit it under a stock 3rd gen hood- not by a long shot.

I use the 142 myself (Weiand design) but had it converted over to Teflon rotor tips when I had it rebuilt. It was rebuilt by The Blower Shop in California and I can vouch for their work. They found TONS of small things wrong with my blower when I sent it in (after the rotors collided with the case for no apparent reason and without warning). They really did an awesome job on the rebuild, installing the teflon-tipped rotors and dealing with me asking a few zillion questions over the phone.

The 144 is the old B&M design blower that Holley picked up when B&M decided to stop making them. They're both nearly identical designs.

 

What kinds of things did they find wrong? Factory defects or wear and tear?

I've already come to terms with the hole I have to cut in the hood. I get to try my skills at blending in a cowl. The car isn't pretty to begin with so it might as well be functional.

I used to drive on a dyno for a company called Apten (F*rd tuning and such...). I flogged alot of 03-04 Cobras in my time there. Some of those guys liked to put a huge wagon wheel pulleys on the crank and get ~22 lbs of boost from the stock Eaton. Needless to say I've heard a few Eatons come apart or rotors hit the case. Kinda sounds like a power steering pump about to let go.

 

My thoughts are on the Teflon coated rotors, supposedly on the heatons it makes quite a bit of difference. The 92-93 3800s make about 15-20hp less then a 94-95 with the same displacement blower (M62) with the difference supposedly being largely in the teflon coating.