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Old 11-26-2013   #3
alnukem
 
Join Date: Jan 2010
Location: Freedom Pa
Posts: 275
Default Re: Help on modifying Old School Magnuson MC220 Twin Screw Supercharger

Quote:
Originally Posted by RICHARD TILL View Post
Change the rearend first. Why not go just a wee bit lower on the gears? That`ll wake it up real quick. Next change the cam lifters and by all means the springs. I`ve always found Bullit Cam Co. to make good recommendations. Ever heard of a forum called Speed Talk? Very informative.
Thanks Rich.....I think I'm going to do the gears first & install a boost gauge before anything else. From doing some research I have found 3.31 & 3.54 gears, the Doug Nash is only 1 to 1 in top gear. I am only going 3.31 because of the ultra-low 1st gear ratio. Here's how the math works out

81 vette 3.28 1st gear x 3.31 rear end = 10.85

90 ZR-1 2.68 1st gear x 4.09 rear end = 10.96

Actually, pretty close! I am sure I will do a Head/Cam, I think I should see where I'm at first. I always get ahead of myself!!!!! Thanks!
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