Which rearend gear do I want?

JTMunk · 04-30-2003, 09:14 PM

I've got a street/strip naturally aspirated 347 92 LX with 3.73 gears. At the strip the car doesn't pull at all in high gear (C4) and finishes the 1/4 at 12.27, 104 mph and 5000 RPMs. I would like to change to 4.10s but I will be adding a supercharger this winter and I'm wondering if this will be too much gear then. Any suggestions?

I'm planning on buying a Renegade style blower but only pulley for 10-14 lbs of boost until the block splits. It's only a matter of time.....

Thanks.

Coupe50h · 04-30-2003, 10:10 PM

with 10-14 lbs of boost you will be running out of gear, get a 3.55, unless you like crossing the line at 8k, well ok maybe not that much, jmo...good luck
p.s, seems turbo cars like a 3.27-3.55, i have heard of some 5.0's running blower and 37's but imo thats gonna rev up too damn quick.

04-30-2003, 09:14 PM	#1
JTMunk Registered Member Join Date: Jan 2002 Location: Albion, IN Posts: 6	Which rearend gear do I want? I've got a street/strip naturally aspirated 347 92 LX with 3.73 gears. At the strip the car doesn't pull at all in high gear (C4) and finishes the 1/4 at 12.27, 104 mph and 5000 RPMs. I would like to change to 4.10s but I will be adding a supercharger this winter and I'm wondering if this will be too much gear then. Any suggestions? I'm planning on buying a Renegade style blower but only pulley for 10-14 lbs of boost until the block splits. It's only a matter of time..... Thanks.

04-30-2003, 10:10 PM	#2
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	with 10-14 lbs of boost you will be running out of gear, get a 3.55, unless you like crossing the line at 8k, well ok maybe not that much, jmo...good luck p.s, seems turbo cars like a 3.27-3.55, i have heard of some 5.0's running blower and 37's but imo thats gonna rev up too damn quick. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

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