Thread: Supercharger/ Blower: Where to start?

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Originally Posted by jerry clayton

I am ready to respond to any item you want to discuss/compare and I believe that my experience with racing, street cars and machining/building engines won't take a back seat to anyone

hey i like sitting in the back the wheels on the bus go round and round . as for a blower man he need s a 632 donovan i know some nut job that has one. all i can stay is Sham Wow that damn thing is still very fast . two years that car has not moved fired it right up and the rear break was hung up from stitting.I was thinking it will break loose ? beat that thing like a red headed step child still smiling ear to ear the rear break did not slow it down one bit .first thing on the list to fix come on over jerry let s raise some hell

Originally Posted by Evolvo

Most of you guys probably know this.....but for the newbies. GMC supercharger designations go like this, a 6/71 is from a GMC diesel engine with 6 cylinders, each cylinder being 71 cubic inches. A 4/71 is 4 cyl x 71 cubes, 4/53, 8/71,14/71 all follow this formula. Just some info to store away.

TY, I wondered what that meant!

A good source of info can be had from the book "A Do It Yourself Guide To Street Supercharging" By Pat Ganahl.This is a book that I used for my very first build of a 6:71 that I had got of a diesel many years ago.It worked for me and shows what it takes to build a street supercharger and what to look for in components etc.

yep you can find a blower rebuild it but the new one is the way to go alot of the used stuff has seen better day and if the case needs work $$ and there getting very hard to find used and then drive kit pulleys .here the one i like for a smaller engine for street use

Originally Posted by Blow by

A good source of info can be had from the book "A Do It Yourself Guide To Street Supercharging" By Pat Ganahl.This is a book that I used for my very first build of a 6:71 that I had got of a diesel many years ago.It worked for me and shows what it takes to build a street supercharger and what to look for in components etc.

Thanks!
Ordered from Amazon last week,
"Shipped Delivery Estimate: June 25, 2010 - July 13, 2010"

Originally Posted by pat mccarthy

yep you can find a blower rebuild it but the new one is the way to go alot of the used stuff has seen better day and if the case needs work $$ and there getting very hard to find used and then drive kit pulleys .here the one i like for a smaller engine for street use

Sharp looking! What can you tell me about that one?

Watch used blower buy new, unless you know the guy. Bought a used low mile 427 blower motor from a guy,thought I got me a hell of deal not
I have learned alot from this blower motor deal. Just got it back from the machine shop in long block form. The used 671 BDS blower I sent to The blower Shop for a freshin up, didnt need a freshin, it neeeded a major rebuild. For what it was going to cost me to rebuild they sold me a fresh polished rebuild for the same price If your going to run a blower do it right the first time i am running 427, steel crank, scat rods, aries blower pistons,running studed mains and heads, no Oringing though, going to keep it below 10lbs boost, nice sized comp hydraluic cam, rect. port Merlin Heads, 2 750 dp's,vertex mag. Should be quite a handful in the model a
Should run good in theory

guys have put abit of boost thru a bbc with out a O ring deck . i use the a 1017 head gasket for 4.310 bore up to 4.530 or a MLS

Pro53, that combo is pretty close to what I used to run in my T bucket. Made 627 hp at 5800 revs on pump gas. you will have fun with it.

And BTSave, that book you ordered is a good read. It will tell you that you need stronger engine components, a big spark and more fuel, and better cooling. Thats getting close to a new engine really.

I reckon theres no point in building a blower motor with stock rods, crank & pistons because power is addictive and sooner or later (sooner actually) you will want to stand on it.

An option may be to keep your current engine and fit up a more trick intake setup. Either an EFI or a twin 4 manifold with a custom top & 8 carbs? or a moon manifold with 4 webers? They look cool.

bbc do not need much in the bottom end stock rods and a cast crank will take 10 boost nice to have better stuff but they been built this way .i just built a 454 this way for street use he s under 9 pounds of boost .this engine was a low buck build as the 489 i built him was going to rip the car apart. i have a 548 10to1 with about 10 of boost blower car s are fun

I was talking to a guy that was testing Turbo Charged Motors at Daytona.
And he said they would only run about 9 to 1 compression.
He said that would determin how much boost they would run.
So how much boost you have will determin your over all
compression ratio? I have never run turbo's but it sure would be fun.
Kurt

Originally Posted by Hot Rod Todd

An option may be to keep your current engine and fit up a more trick intake setup. Either an EFI or a twin 4 manifold with a custom top & 8 carbs? or a moon manifold with 4 webers? They look cool.

That sounds like an interesting approach... at least until I can afford to put in a new (read that as larger) plant. when u mentioned the moon manifold with 4 webers, are u referring to this setup? http://www.carburetion.com/weber/wildv8.asp

With a relatively stock 350 (circa 1978), what do the "experts" feel might be the best choice?

thanks!

B

If you don't have anything and are short of experience it would be very hard not to get a complete motor from this guy.
http://www.bigalstoybox.com/

Consider that you will have about $5k in the blower,carbs , linkage,fuel lines and scoop regardless of who you get it from. Another $5 in a good long block and the rest of the stuff.

If you just want a top kit he can do that too. You will get stuff that will work without a lot of effort.

I did my own but considering that I've done blown applications since the early 60's I knew what I needed. Cost wise I bought new rather than used junk.

The result is a very, very street friendly machine that get livable mileage and simply starts with a single pump of the gas and hit the switch. Idles at 750 and can sit in traffic all day long.

I made 14 laps at back to the 50's and hardly stepped on the gas at all. Each took about 30-45 min. Never got over 205 deg.

Originally Posted by bentwings

If you don't have anything and are short of experience it would be very hard not to get a complete motor from this guy.
http://www.bigalstoybox.com/.

Looking at his prices, it is almost better to just get a new engine already set up with the blower!
"471 Supercharged 355 Chevy Small Block
405 Horsepower, Studded Main 350 Block with Forged 7 1/2 to 1 Compression Blower Pistons, Comp Cams Hydraulic Cam and Lifters, Complete Rotating Assembly Balanced, Double Keyed Iron Crank and Aftermarket Balancer, Roller Rockers, Polished 471 Supercharger with Billet Endplates and Drive, 3” Belt, Funny Car Style Belt Guard, Holley Blower Carb, BDS Scoop, with K&N Filter, Mallory Ignition, Set up, Run and Synchronized.
$7,697.00 Turn/Key #583 "
I sent for his catalogue just now,,, will see price of new carb/ supercharger vs. new 355 sbc...
more once I get the booklet and then call him! Thanks for the lead!

well there alot of guys that can build you a build up and maybe for less money in the bottom end with better parts one guy comes to mind is Jerry Clayton and the other is P.Mc or some thing like that a blower now that,s that big alum thing that sits on the intake like this ? i not going to say any names but you not getting much for your money cast crank ? rebuilt blower with new end plates ? HYD cam flat lifter cam not a hyd roller ?all for $7697 stock iron heads ? a deal ?