masseyiroc

i have a 406 10:1 compression,protopline 220cc heads ,weiand team g intake,750 mighty demon carb.the cam is comp cams xtreme energy soild roller .575 lift pt#12-771-8,1.6 roller rockers. turbo 350 trans ,3500 stall,373 gears,and 26 inch slicks.
best run before was a 12.56@109 with 2400 stall and 274 xtreme engery comp cam(hyd).What do you guys think it will run in the 1/4 mile now?

jbenge

iTrader: (2)

Your combo should definately have the potential to get well into the 11's if you have it tuned well and have good traction. My car has a very similar combo except for I have a smaller cam (hyd. roller 225/230@.05 .525lift) and has gotten into the very low 12's.

masseyiroc

cool .......thats what i wanted to hear
do you guys think a set of 4.10 gears would help or put be into too high of rpm at the end of the track.that cam is rated 2500-6500 rpm

AlkyIROC

Depends on tire size and what your shift point is going to be. When I used to have a 383, I had 4.10 gears and MT ET Drag 28 x 9 tires. They were actually 27.3" tall. I was shifting at 6800 rpm. A taller tire would have broght the shift point down. A shorter tire, 26" tall, would mean I would probably have to shift around 7200 rpm to get the same results. The key is to cross the finish line at or just before the shift point in high gear 1:1. The engine's shift point, gear ratio and tire size all affect how that is obtained.

My current combination of parts with 4.56 gears has me shifting at 7000+. I plan on putting 4.30 gears in this winter to bring the shift point down into the 6800 range.

masseyiroc

maybe ill keep my 3.73s this engine isnt balanced so i think 7k would kill it.after next year i going to do another bottom end with good gear.eagle stuff is accually hafe cheap here in canada.(the only thing)lol