Wieand 144 Blower Q's

Ok heres the deal. my dad wants some more power out of his C10, it's a 350 8.5:1 Q jet 4bbl 260 HP just as it left the line except a GM HEI distributor and he wants more power out of it, at the Syracuse Nationals he saw a Mid year vet with a Small block and 1 of the 144 blowers and fit under the hood with no problems, and the stock hood, just had a low rise air cleaner so, he was thinking about spending the 2k for the blower and getting the respectable 100 HP as advertised. what would we need to do? the truck has power brakes and a couple of vac lines that run into the cab which we think is for the heater, how would we keep the vac for these things?. will the 144 blower clear the HEI dizzy? Thanks in advance

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Originally Posted by Matt167

Ok heres the deal. my dad wants some more power out of his C10, it's a 350 8.5:1 Q jet 4bbl 260 HP just as it left the line except a GM HEI distributor and he wants more power out of it, at the Syracuse Nationals he saw a Mid year vet with a Small block and 1 of the 144 blowers and fit under the hood with no problems, and the stock hood, just had a low rise air cleaner so, he was thinking about spending the 2k for the blower and getting the respectable 100 HP as advertised. what would we need to do? the truck has power brakes and a couple of vac lines that run into the cab which we think is for the heater, how would we keep the vac for these things?. will the 144 blower clear the HEI dizzy? Thanks in advance

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the blower won't change the vac. at idle. thats one good thing about a blower. if he don't do anything but bolt the blower on, everything else would stay the same. i's say the dist will fit.

I knew I saw blowers on cars with Power brakes b4 so I thought it was feesable. is there anything else we would need to do, beyond bolt it on?

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Originally Posted by Matt167

I knew I saw blowers on cars with Power brakes b4 so I thought it was feesable. is there anything else we would need to do, beyond bolt it on?

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pull your hat down around your ears. **)

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Originally Posted by lt1s10

pull your hat down around your ears. **)

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:LOL: :LOL: :LOL: :LOL:

My dad read on the wieand website that the 144's make boost at idle, I think he was mis reading a boost chart so I'm going to have to look myself.

edit. I just looked, they do not have a boost chart that I could find, what they did have is a troubleshooting guide and 1 of the troubleshoots was " Engine has vac at low RPM " and it said it was normal when not under boost. right there compleatly confirms what mike said, now all I got to do is show him so he belives it . if he runs a vac can with a check valve behind it, that will give him the vac he needs right? thanks

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Originally Posted by Matt167

My dad read on the wieand website that the 144's make boost at idle, I think he was mis reading a boost chart so I'm going to have to look myself.

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it has to have air to make boost, and with the throttle closed there is no air. not enought to make boost anyway. **)

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Originally Posted by lt1s10

it has to have air to make boost, and with the throttle closed there is no air. not enought to make boost anyway. **)

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yep, I just edited my post, must have been while you were posting. I got that information right from Wieand just to prove what my dad had read was wrong. thanks:)

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Originally Posted by Matt167

My dad read on the wieand website that the 144's make boost at idle, I think he was mis reading a boost chart so I'm going to have to look myself.

edit. I just looked, they do not have a boost chart that I could find, what they did have is a troubleshooting guide and 1 of the troubleshoots was " Engine has vac at low RPM " and it said it was normal when not under boost. right there compleatly confirms what mike said, now all I got to do is show him so he belives it . if he runs a vac can with a check valve behind it, that will give him the vac he needs right? thanks

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he can put a can on it if he want to but he don't need to. i never ran one with 454,671 set up.

if you have 16" of vac. on your stock intake, take it off, bolt a blower on, you still have 16" of vac.

yep he gets around 16" of vac. what does he do about the vac advance on the HEI, just leave it and when the boost comes on, the centrifagul advance will take over?

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Originally Posted by Matt167

yep he gets around 16" of vac. what does he do about the vac advance on the HEI, just leave it and when the boost comes on, the centrifagul advance will take over?

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you got it!!!**)

Thanks for the help. :)

Yep it will fit i have a MSD extreeme HEI with the coil on top of the dizzy and it fits fine . As faras vacuum i have no problems what so ever getting vacuum for my brakes hooked them up to the supercharger itself .

There is a spot where the carb mounts a threaded hole that i put a 1$ adapter on and hooked my vacuum line to it for brakes .

I DO RECOMEND A BLOWER CARB ITS A MUST HAVE ITEM !!!!! I ran a 670 holley street avenger it was well ok id say untill i got my 750 demon blower carb wow what a difference its a weiand 144 supercharger also in a small datsun 280z took my 220 crank horses and put down 318 to the crank now and 260 to the tire all this at 6,000 ft above sea level .

Jason SBC DATSUN

You probably will want to send your distributor to a shop like Bob Jennings Dyno and have it recurved. The process is not expensive, but it really helps. Blower motors like lots of initial advance[ usually 14 to 16 degrees], fairly quick advance , and only about 36 degrees total, sometimes less depending on how much boost you are running. When a company advertises a certain amount of boost, they are usually expressing wide open throttle and 6000 rpm. Roots type blowers make boost all the time and extra torque all the time. but less at lower rpm, so an engine that would normally have 16 in. of vac at 1500 rpm might show 14 inches.
porschehacker

I know forced induction motor should have retarded timing if any timing ajustments are made. to far advanced under boost and you get detination., normally people just run a higher octane to compensate, rather than get a spark box with a boost retard, or retarding the timing all togther.

I haven't posted this link in a while, maybe your dad would like to read up....
http://streetmachinesoftablerock.com...topic.php?t=81

saved it in my favorites, thanks Tech. I'll print it for him when I get ink for the printer

Well weiand recomends no more then 12 degrees advance at idle for sea level im running 18 degrees at 6,000 ft above sea level which is like running 8 degrees .

They told me to keep it at 8 - 12 degrees untill about 2,400 rpm then have full advance by 3 grand which mine does as i changed the advance curve springs myself with a total of 38 degrees for me .

Im also having to run a 10 pound boost pulley just to get 8 pounds of boost up here and its a blast i must say .