Re: Merc 440's
 

Rookie,
Harold has just updated his line of supercharger and supercharger/marine cams including an new 525 SC cam.
302*/308*
224*/234* @ .050"
.534"/.559"
114* LSA
110* ICL
If you are thinking 420 Mega or Weiand this would be a very good way to go. A custom grind is always an option
http://www.holley.com/HiOctn/ProdLin...CC/Chevy7.html

Re: Merc 440's
 

rmbuilder/Bob, Thanks for the info.

Re: Merc 440's
 

rmbuilder, I took a closer look in my book (#90-14499--1 887) and it seems that you're right.

I'll never thrust the Merc publication again.

I've learned that 400's, 420's and 525sc's uses the same cam, but this book... :confused:

Also, check out the lift and duration values in pic #2, it doesn't make sense.

Re: Merc 440's
 

GREAT!! This is just the info I was looking for. The $ to HP comparisons are much better with the supercharger, now that I know the core pieces are forged and can withstand forced induction.

Now would I be better off with a roots style or centrifical? I was thinking of a Vortech, but I am ignorant on superchargers. All I know is from reading articles about 5.0 Stangs (my next project) and everybody says that that you can't go wrong with a Vortech.

Any deals on here that might help me?
http://www.usedsuperchargers.com/

Re: Merc 440's
 

Pros and Cons centrifical Vs. Roots style?

Any input?