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Old May 3, 2008 | 12:49 AM
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Default project supercharged 427

hello all, here is my first update on my 81 corvette.

the project...
81 corvette restoration/supercharged 427 pushing 900+ hp on pump gas.

I pulled the motor tonight. I started at 5and finished at 11.lol way too long but I had a hell of a time getting to a few bolts. when I got the motor out I found that one of the motor mounts was broken in half :wtf:



that has to be the dirtiest motor ive ever seen.

I plan to get the Trans out tomorrow and test fit the 427 to make sure it will mount right up. if not then I see new motor mounts in my future. ill take some more pics of what im working with tomorrow when its light.

well that's it for now, ill update this thread as I get more done.


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Old May 3, 2008 | 01:17 AM
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what kind of supercharger are you getting?? 6-71? centrifugal?
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Old May 3, 2008 | 01:36 AM
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"Weiand 6-71 Street Supercharger Kit

Weiand Superchargers can be found in all aspects of racing, from tractor pulls to the quarter mile. Some supercharger features are:

Roots-type three-lobe helical rotor eliminates flex
Rotor setup closes tolerances for maximum boost efficiency
Equal distribution of fuel/air mixture optimizes HP gains
Mounts with standard distributor setup
Heavy-duty bearing plates eliminate cracking
Rear plates use premium sealed ball bearings
Front bearings lubricated by oil bath
Front rotor shaft seals are double-lipped with Teflon
Each 6-71 Street Supercharger Kit includes:

Remanufactured Polished 6-71 Supercharger with gears and bearing plates
Supercharger Intake Manifold
3" Wide, 1/2" Pitch Drive Assembly
2-4V Carburetor Adapter
Supercharger to Manifold Gasket
Carburetor Adapter to Supercharger Gasket
Belt, pulleys, brackets, idler, and necessary fasteners
JEGS EZ Kits are designed by JEGS professionals to ensure that you get
all the performance parts you need. The 6-71 Supercharger Kit Plus includes:

The contents of a 6-71 Street Supercharger Kit
Weiand Linkage Kit
Two Holley 600cfm Supercharger Carburetors
Holley Throttle Return Spring Kit
Mr. Gasket Hilborn Scoop
Note: Kits do not allow enough clearance to fit a GM HEI distributor.
BB-Chevy

925-7483P 6-71 Street Supercharger Kit
BB-Chevy 396-502
9% underdrive rati"
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Old May 3, 2008 | 08:44 AM
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Don't Do It! I tried to tell a friend that supercharging his 69 427 was nuts, and that it will be TOO powerful.. Now, after $50k in a restoration, he has his 6-71 sticking out of the hood, and he says-"you were right, this thing is crazy. It gets sideways at 80 when you step on it!". He is only running 5 pounds of boost, 650hp/650 torque. Now he drives it once a year, maybe. I think it is a shame that such a beautiful car can't be driven around on a nice day.
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Old May 3, 2008 | 09:10 AM
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Thats a nice setup, a big huffer sticking out of the hood means BAD BOY HERE, I hope you like going side ways at 80mph--I would-
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Old May 3, 2008 | 09:12 AM
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I hope you plan on a Toms rear setup or a solid axle back there. It will take the rear you have and chew it up very quickly.
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Old May 3, 2008 | 12:11 PM
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Remember that old t-shirt saying...Nitrous is nice, injection is cool, but I'd rather be....

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Old May 3, 2008 | 12:27 PM
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Originally Posted by Gordonm
I hope you plan on a Toms rear setup or a solid axle back there. It will take the rear you have and chew it up very quickly.
supercharging a c3 is very doable, ive seen it done a few times with good results.
yes a solid back axle is my plan. I still have a lot of research to do in that area.
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Old May 3, 2008 | 01:45 PM
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Originally Posted by dodge_ss/t
supercharging a c3 is very doable, ive seen it done a few times with good results.
Really?
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Old May 4, 2008 | 01:00 AM
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si! yellow 72 , if you dont mind me asking how do you like yours?

my 350 looked like it was dunked in a tank of oil then put in the middle of a dust storm. i sealed every open hole today and i plan to clean it like new tomarrow. wach out guys i got the goahead to sell it, so it will be for sale soon. numbers matching 350 with only 9348miles on it.


. heres some more pics.

the big block. out of it all the only big things im useing is the block and oil pan.
http://img381.imageshack.us/img381/9...3081933gy9.jpg

lol
http://img176.imageshack.us/img176/7...081933aob6.jpg

http://img146.imageshack.us/img146/5...081933bam3.jpg

a blank slate ready for a good coat of paint

http://img169.imageshack.us/img169/9...081933cic0.jpg

Last edited by dodge_ss/t; May 4, 2008 at 01:11 AM.
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Old May 4, 2008 | 08:34 AM
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sounds like it should be good
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Old May 4, 2008 | 08:42 AM
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Originally Posted by dodge_ss/t
si! yellow 72 , if you dont mind me asking how do you like yours?
It's a ton of fun to play with. Practical for a daily driver? I don't think so.
But mine is a sparingly driven, Oh Lord do I dare say it?.....
Garage queen/show & shine/fair weather Sunday cruisin' hot rod.
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Old May 4, 2008 | 09:36 AM
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Are you going to build it as a 427 or stroke it?
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Old May 4, 2008 | 11:16 AM
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Originally Posted by yellow 72
It's a ton of fun to play with. Practical for a daily driver? I don't think so.
But mine is a sparingly driven, Oh Lord do I dare say it?.....
Garage queen/show & shine/fair weather Sunday cruisin' hot rod.
that's the whole reason im building mine. I want to take it to shows, put about 100 miles on it a year and maybe kill some tires every now and then. oh yea and annoys the hell out of my a hole neighbors. i would never consider it as a daily driver with gas a almost 4$ right now. and the fact thats its a corvette. c3 corvette = weekend fun


and it only going to be a reg 427, dont have the $ to stroke it and dont see the point since it will be blown. that's enough hp already.

Last edited by dodge_ss/t; May 4, 2008 at 11:19 AM.
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Old May 4, 2008 | 11:36 AM
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Got a steel crank?
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Old May 4, 2008 | 12:04 PM
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Originally Posted by BB72
Got a steel crank?
havent got a crank yet, buying all the internals is next on my to buy list. should have it by the end of summer
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Old May 4, 2008 | 05:57 PM
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For some reason I just cant see a blown 427 making 900 hp on pump gas
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Old May 12, 2008 | 12:12 PM
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well here's the first update of many more if your interested in my project.

I got the engine compartment striped and have started painting it. im painting with the spray in beadliner that comes in a rattle can made by dupli color. it acutely looks very good. I still need to sandblast all the frame in there but that wont happen for a couple weeks.


I also got the 427 and Trans in to test fit it. not happy with the oil pan fit. other then that every thing went very smooth. I had it in in 30min with no help.


I also installed a hood pin kit which looks very sharp. I will post pics of that later.
I just bought a small powder coating machine so I can do all, well most of the front steering components. im limited to things that fit in the oven.lol

also got my blower in, heres the ebay pic of it. its like new on the inside. ill polish it up and it will look amazing.

thanks

Last edited by dodge_ss/t; May 12, 2008 at 12:18 PM.
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