Thread: 4-53 supercahrger help!!!

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The cubic inch rating of a blower is not the same as the cubic inches of the engine its made for.
As far as the 2-cycle/4 cycle thing, remember that a Jimmy diesel has ports up the sleeve, so the compression stroke doesn't start until the piston has covered them up, thus losing 1/4 or more of its effective displacement.
The world's first blown small block Chevy used a 4-53 blower and put out pretty good power. Duntov hisself built it for GM, as a test of reliability under high output, in 1954, I think.

Here is a 671 on a modified intake manifiold on a chrysler small block, notice the 2' drive this will give you clearance between the front of the motor and the radiator, it is a dyer setup. The car is a 71 demon. So you can probably start your ideas from here.

thank for the pic. Say how did you get the picture on this site I found the picture of guy that put 8v71 on his boat and I wanted to show you guys but I could not figure out how to do it.

First, click on "post reply" and insert your text. Then scroll down and left click on "manage attachments." A box will open up. Left click on "brouse."

Now you can select where you want to go to find the picture. I keep mine in "my documents." Left click on the picture you want to post. Then left click on "open." You will go back to the one box. Left click on "Upload." You can repeat the brouse and upload thing for up to 5 pictures.

Then simply left click on "submit reply" and you should be done. Run a test and see if it posts.


Don

here is a picture of supercahrger that the guy used on his boat and a picture of a 4-53 supercahrger like mine.

here is a picture of supercahrger the guy used on his boat and a picture of a 4-53 supercahrger like mine.

Originally Posted by MOPAR 360

what about weainds 174 ci supercharger they sell these for there big block chevys If you can put a 174 ci on a big block chevy why cant you put a 212 ci on a small block mopar?

i dont think it makes no dif. if you're gonna run 6 lbs. boost and not turn it over 6000. rpm's. the small case cant hold, but so much air.

Originally Posted by MOPAR 360

what about weainds 174 ci supercharger they sell these for there big block chevys If you can put a 174 ci on a big block chevy why cant you put a 212 ci on a small block mopar?

I think in that case the 174 cubic inches is a rating of how much air the blower will displace, or "pump" for a specific rotation -- perhaps one revolution. It has nothing to do with the engine displacement, which is where the 212 cubic inches comes from in the 4-53 blower discussion.

Bob

Yeah, I don't think the two numbers corelate to each other in any way.


Don

I know that to figure out how much a 8v71 will displace is you 8x71 =568 and that is how much air that supercahrger will pump every revolution. I figure you do the same for the smaller diesel. That is how I got 212 ci.

Heres a 671 with an Als Blowers streetcatcher cab scoop attached, just a few more ideas

and another view

the above item is what just might be "taking a seat" on top of my 283 for the vega

Yup, a blower is the biggest camshaft you can put on an engine

Originally Posted by gassersrule_196

the above item is what just might be "taking a seat" on top of my 283 for the vega

don't let it take a to big of a crap sitting up there, strange things happen!!!