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Old 10-08-2008, 08:13 AM
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prostreet64 prostreet64 is offline
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Location: Gainesville, Fl.
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If the rearend is the original GM 8.2, Pontiac/27 spline pinion, I think your gear choices will be very limited. Richmond and some of the others only list 3.55, 3.90, 4.11. If you happen to have the newer 8.5 corporate rearend, then 3.42's or 3.23's are available but not the 3.55's. In any case I wouldn't recommend anything over the 3.55's.

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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car.

79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads, Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.60 @ 126 so far...
  #2  
Old 10-08-2008, 09:41 AM
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OINK 1 OINK 1 is offline
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Join Date: Jan 2002
Location: Colorado
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Thumbs up Gear choice

323- great highway
355- really nice for highway and around town
373- quicker off the line, ok highway

I'd get 355's and an 11" convertor.
Change that JUNK CAM !!
Get an Ultra-Dyne 280-288 h 12+6 $155.00 from me.
Or Comp 51-223-4, 268-280 h10+4 $ 118.00 from me.

Pontiac Gregg
1-303-776-0877
Web site:

http://www.pontiacengines.net
click on cams, has tech data with each one.

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Greg Merrick
  #3  
Old 10-08-2008, 10:59 AM
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70lemansport 70lemansport is offline
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I cant use either one of those with my pressed in studs. Max lift i think i can use with stock rebuilt heads .470 and thats pushing it. The summit won over because of the 100$ price for the cam and lifters. And that XE268 is pretty big for a 350. I dont think id have much torque down low with that..

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