Why are there so few blown small blocks?

earlymopar

Well-Known Member
Joined
Feb 26, 2016
Messages
119
Reaction score
87
Location
Oregon
The intake is a Weiand 7503 that I modified for the Magnuson supercharger. The pieces between the heads and headers are adapters that I designed and machined to fit the 302-351 Ford headers I'm running. Somewhere I have the manufacturer name for the headers but they are very well made, stainless headers with thick flanges and tube wall section that I picked up off of eBay for $200 (brand new).
 

earlymopar

Well-Known Member
Joined
Feb 26, 2016
Messages
119
Reaction score
87
Location
Oregon
Yes, twin-screw is correct. They only require 1/3 H.P. to operate during normal driving and don't generate heat like a roots-type supercharger.
 

Nat

Well-Known Member
Joined
Jun 11, 2019
Messages
919
Reaction score
556
Location
Canada
DO THEY MAKE A OW RISE SUPERCHARGER something like the 90 92 t bird SC superchRGER ? I WOULD LIKE SOMETHING LIKE THAT WHERE i DON'T HAVE TO CHOP THE HOOD
 

DARTGAME

SuPeRcHaRgEd
Joined
Jan 20, 2005
Messages
1,029
Reaction score
718
Location
santa barbara,ca
The Landy kits usually but not all used an Offy dual quad 5488 manifold. This one was casted in 1984. Lower pulley was a Chevy one modified to fit SBM. Manifold is as old as me! Hahaha

D0A3DFB8-73ED-4A52-B2A8-6E180E5844C3.jpeg


998B6E66-CD23-410C-8F42-7C08312FC8F7.jpeg


19836149-59A6-42A9-BDA0-341C51AA61F9.jpeg


57B5B105-0ABC-42E3-BDF5-8BF5DE6FB330.jpeg


E0C600B8-7A55-4C3C-A212-528524F6F12F.jpeg
 

Dan the man

Well-Known Member
Joined
Aug 1, 2014
Messages
2,631
Reaction score
1,475
Location
missouri
I've been looking around at blown (roots style) small blocks. Lots of chevys, some fords and almost zero (small block) MOPARs.

Why is that?

I realise that they are out dated tech and now days it's all about the twin turbo, procharger ect.

As far as I'm concerned, nothing is cooler than the sound of a old school blower and the look of that big belt.

Why is it that the small blocks almost never get treated to a cool old GMC hot air pump?
I don't have a lot of knowledge about blowers, but I'm thinking that it's because mopars are just not very popular. Of the big 3, mopars have the lowest selection of performance parts that there is. Afr doesn't have any cylinder heads for the sbm's. Edelbrock has a cylinder head specifically for the small bore small block Chevys. Us mopar guys have a very limited source of performance parts. Back in the mid to late 80's the best bang for the money was the mustang 5.0's as they responsed well to the simplest of modifications.
 

Nat

Well-Known Member
Joined
Jun 11, 2019
Messages
919
Reaction score
556
Location
Canada

harvenator

A fish called Wanda
Joined
Sep 22, 2008
Messages
319
Reaction score
31
Location
Braden, TN 40 miles East
The intake is a Weiand 7503 that I modified for the Magnuson supercharger. The pieces between the heads and headers are adapters that I designed and machined to fit the 302-351 Ford headers I'm running. Somewhere I have the manufacturer name for the headers but they are very well made, stainless headers with thick flanges and tube wall section that I picked up off of eBay for $200 (brand new).
Sure wish someone would come up with that for the LA motors for a less expensive header that would fit.
 

mopardude318

Well-Known Member
Joined
Jan 7, 2005
Messages
10,611
Reaction score
2,026
Location
Gilroy, Ca
I don’t know how some of you guys use power steering with a 671 but I’m trying to make it all work with factory brackets. I’m having an exact copy of a factory 2 groove crank pulley made, with a flat face and 2” register to accept the blower pulley.

The hard part was trying to get a couple single groove pulleys spaced correctly, (center to center measurement of the V-grooves) to match the factory pulley. That measurement was 0.86”.

It also keeps the same diameter of the V drives. I don’t know why the aftermarket makes all the aluminum crank pulleys a different size from factory. Usually smaller diameter.

So I had this made. Still don’t know if it’ll work. Lol

EA16A118-AEAE-4385-84DE-22A4A46190F6.jpeg


BC60F0B3-8295-4617-9C63-232222E9E4A6.jpeg


A034FFAC-3044-4622-9E9A-75D83CD93D94.jpeg


2CA0DCDD-A315-4D1F-BDF0-DC003988E281.jpeg
 

blown340

Well-Known Member
Joined
Nov 10, 2007
Messages
170
Reaction score
13
Location
Chico, Ca
I have the Hampton 6-71 kit for my 340, blower is back at Hampton's getting updated as I bought the kit back in the late 80's
Just got the carbs back from Holley, had them do the boost reference update to them
 

sireland67

FABO Gold Member
FABO Gold Member
Joined
Oct 27, 2010
Messages
10,174
Reaction score
5,767
Location
WV
I don’t know how some of you guys use power steering with a 671 but I’m trying to make it all work with factory brackets. I’m having an exact copy of a factory 2 groove crank pulley made, with a flat face and 2” register to accept the blower pulley.

The hard part was trying to get a couple single groove pulleys spaced correctly, (center to center measurement of the V-grooves) to match the factory pulley. That measurement was 0.86”.

It also keeps the same diameter of the V drives. I don’t know why the aftermarket makes all the aluminum crank pulleys a different size from factory. Usually smaller diameter.

So I had this made. Still don’t know if it’ll work. Lol

View attachment 1716019205

View attachment 1716019206

View attachment 1716019207

View attachment 1716019208
I need to do the same thing.
 

blewbyoutobad

FABO Gold Member
FABO Gold Member
Joined
May 23, 2010
Messages
1,389
Reaction score
426
Location
Missouri City, TX
Don't those require an offset dizzy?
Dont think so, but again nothing would surprise me.
360-I4-MM-SC Mod Man Intake w/ Supercharger Top Plate, Plenum Gasket & Fasteners for a 6-71 Supercharger ............................................................................................................................... 815.00
 

65TerrorCuda

Well-Known Member
Joined
Jul 26, 2009
Messages
919
Reaction score
514
Location
Albuquerque, New Mexico
Dont think so, but again nothing would surprise me.
360-I4-MM-SC Mod Man Intake w/ Supercharger Top Plate, Plenum Gasket & Fasteners for a 6-71 Supercharger ............................................................................................................................... 815.00
That's a smokin deal then. I paid $1100 for mine back in 2006 incl. freight from OZ
 
Top