I have been thinking of getting a weiand 142 supercharger for a while now and was wondering whether it would fit under an ascd big block hood. Filter size doesn’t bother me if I have to I will run a 2” filter on a 2” drop base with filtered top.

Is there any place that rebuilds them in case I decide to get one off ebay and how much dose it cost to rebuild?

If any one has one for sale let me know

I did search they all say decent size filter.

 

Or should I just go with nitrous

 

I MYSELF HAVE WANTED ONE BUT AFTER SOME THREAD SEARCHING AND E MAILS FROM PEOPLE I THINK NITROUS IS PRETTY EASY ..... BUT THE BOTTLE DOES GET EMPTY LOL OH IM USING A 300 HP SHOT FROM A BIG SHOT KIT

 

Nothing like having the power all of the time. NOS is great for racing but boost is the deal for the street.
Check with the manufacturer on how much a complete go thru will cost.

 

I have been thinking a bought the edelbrock kit for some time now. But nothing is as cool as seeing a supercharger when you pop the hood. How a bought a dual carb system and a nitrous plate under both carbs, would that fit under the hood. Or would I be flirting with a tuning nightmare.

 

i have nitrous on my car and don't like it cuz it don't last long

that why i'm puttting a turbo on it

 

As long as you go with a wet nitrous kit tuning isnt an issue because the extra fuel goes in with teh nitrous everytime you hit the button.

 

You still have to keep the bottle pressure at 950 and the bottle runs out.

 

Of curse I am going wet if i go n20, I am talk a bought tuning for normal driving.

 

do both...small blower + small shot = lots of fun!

 

That is what I wanted to do. Weiand 142 with a top shot system. But will that fit under the hood. I think the big block hood is a 3” cowl.

 

Get a 6-71 if You want boost and visibility. Get turbos if You have the cash and patience to tune it. Get NOS if You want big power reliably and hidden. My preference would be the turbo first,NOS second , centrifugal blower third and roots last.
Also,small roots blowers are lame. If its a decision between a small roots or NOS, I would go with the NOS.

 

LOL, thats the kind of opinion that has lost a lot of races!

 

last time i checked no matter what blower was used 9 lbs of boost is 9lbs of boost.......

 

True,but to make serious power 9 pounds is not enough...and the small blower is pretty much done by the time it makes 9 pounds on a smallblock. Installing it You go through almost the same hassles as a big blower (I admit,little less) with far less return. Of course it will do OK for someone who just wants a bit more power, nothing extreme.
Biggtime, since we both own SyTy as well we both know that 9 PSI is not a lot of boost, and that a bigger compressor would move more air more efficiently at the given PSI. It would all depend on personal preference I guess, opinions may vary, there are different ways to achieve similar goals.
LOL, I am not planning to lose races to
142 blown smallblocks anytime soon...

 

biggtime,
I was talking to a friend of mine the other day about the "9lbs is 9lbs" no matter how you get it and the discussion got into outlet temps.... now just pulling #'s out of the air for theory, I would think that 9lbs out of a 6-71 turning at 5k rpm would be a cooler charge than a 142 at 12k rpm or a centrifugal at 20k rpm and in that theory the cooler 9lbs would be a more dense charge than the hotter 9lbs. Have you seen any info on outlet temps between types of superchargers?

 

I personally do not like the roots type of compressors. I have built one for a guy who's car did run good though.

The outlet temps do depend on the compressor side of the blower. Naturally a larger wheel will make less heat for the same boost.
I did not mean to compare that way only meaning that basicly 9lb is 9lbs. Although the 142 9lbs is probably the same as a 6-71 9lbs. one would make a little more heat but the other would have more parasitic loss...............

I do know my centrifical and my turbo both create the same heat to the intake. But I think my intercooler is better on the blower. When I convert my TY to A/A this winter I will have a better idea.
I believe what you stated to be true but have no eway to test (or time)

 

lol, I guess we did have too much time on our hands last weekend to get into that discussion but it would be nice (but probably never happen) to see a graph of all types of forced induction that factored in heat and parasitic loss at the same amount of boost. I have only had experience with roots induction so it’s hard to compare to centrifugal or turbo.

 

I am not out for a 9 second car. I want a car that can run a const 12 flat at the track and not have to worry a bought breaking things all the time.

To me I seams that a small supercharger and maybe a small shot of N2O to act as an intercooler fits the bill

If my memory is right nitrous in the bottle is a liquid, in the faze change from liquid to would absorb some heat like an intercooler. Correct me if I am wrong.

 

That 142 will get you low 12's without nitrous easy and still be dependable

 

the big block hood is only 2 1/2" tall will the 142 still fit.

 

I can't answer that, I had the dual carb setup on a B&M 144 so it was much higher than yours will be.

 

I have pretty good expereince with the little 142 blower. Shoot me an email if you're interested and I'll see if I can help you out.

Here's a few things I'll throw at you from the start....

1. The little 142/144 blower is all done around 500HP. It just can't move enough air to make more than that. Small cubes, high boost. Larger cubes, low boost. Makes little difference. Over 450HP you're pushing the envelope. 500HP you're done. This blower was originally designed to turn a stock 250HP V8 into a 350HP V8. Massive HP wasn't it's design criteria.

2. DO NOT overlook the importance of hood clearance. You need around a 4" cowl hood to fit one of these things in a 3rd gen, at least if you plan on running a carburetor. No matter what you do you MUST have at least 1" of free clearance over the top of the carb if you expect it to meter fuel correctly. Filter-type lids make the situation WORSE, not better, with a low profile air cleaner since the pleats stick down more than 3/4" on the inside of the lid. 14x2.5" on a 1.5" drop base with a plain metal lid is as low an air cleaner as you dare try- and beleive me, I've tried lots of them.

3. Holley charges $700 to rebuild one of these little blowers. Gotta talk to the guys in their reman department about that. BDS might also rebuild them, but I've never asked.

My 78 Malibu has this blower with a 383 stroker, AFR heads and a small Comp Cams blower cam makes around 400HP to the rear wheels (dyno verified) through a TH-350 automatic trans which would put flywheel HP around 480. Fast, but not outrageous. But please realize I do this with a smooth idle, reasonably fuel economy, and no need to take the engine over 5500 RPMs. It gets it done with big torque, not high RPMs and a lumpy cam.

 

whats reasonable gas mileage