I'm currently on the hunt for a set of blowers for my 540's, most of what I'm finding are tall deck intakes, I've been told and have known over the years that people have taken a 10.2 intake and milled it to fit a 9.8 deck, so give me some real world experiences with this, and yes I know I can buy new intakes but would rather buy two complete setups. Second what would be the ideal blower size with 8.9.1 compression, 305 AFR heads and CMI big tube straight back headers, and if cam specs are required I can provide this. What's the gotcha's in doing this, different gaskets, distributor issues not sealing properly ??

Thanks as always

with your compression ratio i would keep the boost down below 7 lbs and would run innercooler,that being said a 8,71 or 10,71 would be correct size for a roots blower.a whipple 3.3 would be better.as far as milling tall deck manifolds to fit a std deck,it can be done but i think you should have no trouble finding std deck manifolds in the used market.

look on racing junk .com for manifold as for blower inter cool is a most if u choice a roots 10-71 will be better with a 540 the faster u spin a blower the more heat they make

just an idea know nothing about them


Chevy BBC 454 6-71 8-71 Blower Aluminum Intake Manifold with Blow off Valve




Brand: Speedmaster
Part Number: PCE149.1013
Part Type: Intake Manifolds, Supercharger

Engine Block Style: Stock/OEM standard deck
EGR: No
Intake Material: Aluminum
Intake Finish: Satin
Quantity: Sold individually.
Notes: Includes blow off valve assembly.

If you are looking for a manifold to use with your 8-71 or 6-71 supercharger, look no further than Speedmaster. These Speedmaster 8-71 and 6-71 supercharger manifolds are aluminum constructed and suitable for competition or street use.

They feature:

Heat treated cast aluminum
Direct 6-71 / 8-71 blower bolt on
Will clear distributor (except Hei)
Raised plenum for better distribution of air
Threaded water ports near water outlet
5-3/8” manifold height
2” x 1 1/4” Intake Ports





Manifold on E-bay

ProComp changed there name to Speedmaster, just in case people don't know.

http://blog.speedmaster79.com/new-ma...f-speedmaster/

not enough much room to mill that much off

same old junk with a new name!the reputation of procomp is so bad they had to do something if they wanted to sell their junk,heaven forbid they start making a product that is any good,just call it by a different name and the dumb americans will continue to buy it because they think they are getting a good deal when infact it is junk.