4" or 6" with 3.73 gears? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1972Supercheyenne4wd · 07-25-2004, 07:55 PM

I'm building a 355 with 350 hp. I dont know if my hp+3.73+350turbo auto will push 35" tires. I don't know if I should build a stronger tranny also, or say screw the 6" w/ 35" tires and stay with 4" 33's. Daily driver and towing camping trailer on weekends for some fishing and hunting gigs.

Mudder · 07-25-2004, 08:41 PM

The 3.73's will do a lot better with the 33's. You'd need 4.10's for the 35's to be in the right rpm range.

kickinasphalt · 07-25-2004, 09:51 PM

I have 3.73 with 35's and it works but 4.10 would be nicer.

2wdBlazer · 07-26-2004, 09:08 AM

I am still running 3:73's with 38's. My motor is only slightly modified as well. It is a little pokey but I can still get up to 75-80 mph no problem.

*1FaastC10* · 07-26-2004, 09:26 PM

for towing, stay with the 33s, 3.73s will be ok, but 4.10s would be better for towing.

DivineFord · 08-01-2004, 11:30 PM

The 3.73's will work for now but plan to gear down to the 4.10's, and that would be a good time to stick in a locker or posi that you may have always wanted

matt

Grim Reaper · 08-02-2004, 10:17 AM

Lift and big tires is BAD for towing. Not saying it can't be done but it isn'e exactly the safeset thing and drop tow bars increase the leverage on the hitch and can cause issues even if your tounge weight is in line with recomendations.

If you plan to tow I would go 2 inches of lift and 33's max.

You can clear 35's with 4 inches of lift and move the axle forwad one inch by re drilling the spring purch of going with a 2.5 inch spring and ODZ zero rate offsett blocks.

ljbear · 08-03-2004, 01:17 AM

I ran 4" lift and 35's with 3:73. No problem with the power, but my biggest issue was the increase in my stopping distance. If you plan on doing any regular towing go 33's

1972Supercheyenne4wd · 08-11-2004, 01:56 PM

staying with 33" tires on a 4" lift, thanks for all the info.

07-25-2004, 07:55 PM	#1
1972Supercheyenne4wd Have another!! Join Date: Jul 2004 Location: Pueblo, Colorado Posts: 81	4" or 6" with 3.73 gears? I'm building a 355 with 350 hp. I dont know if my hp+3.73+350turbo auto will push 35" tires. I don't know if I should build a stronger tranny also, or say screw the 6" w/ 35" tires and stay with 4" 33's. Daily driver and towing camping trailer on weekends for some fishing and hunting gigs.

07-25-2004, 09:51 PM	#3
kickinasphalt Registered User Join Date: Jan 2000 Location: North Dakota Posts: 351	I have 3.73 with 35's and it works but 4.10 would be nicer. __________________ 1972 K-10 Longbox,6" lift w/35's/350/SM465/NP205/3.73 1972 C-10 Longbox,350/350 1998 Pontiac Grand Prix GTP FOR SALE: 1971 K-10 Longbox,350/SM465/NP205

07-26-2004, 09:08 AM	#4
2wdBlazer The Blazer King Join Date: Sep 2000 Location: Valrico, Fl (Tampa) Posts: 1,212	I am still running 3:73's with 38's. My motor is only slightly modified as well. It is a little pokey but I can still get up to 75-80 mph no problem. __________________ 72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest.

08-02-2004, 10:17 AM	#7
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	Lift and big tires is BAD for towing. Not saying it can't be done but it isn'e exactly the safeset thing and drop tow bars increase the leverage on the hitch and can cause issues even if your tounge weight is in line with recomendations. If you plan to tow I would go 2 inches of lift and 33's max. You can clear 35's with 4 inches of lift and move the axle forwad one inch by re drilling the spring purch of going with a 2.5 inch spring and ODZ zero rate offsett blocks. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

08-03-2004, 01:17 AM	#8
ljbear Registered User Join Date: Jan 2003 Location: Emmett, Idaho Posts: 858	I ran 4" lift and 35's with 3:73. No problem with the power, but my biggest issue was the increase in my stopping distance. If you plan on doing any regular towing go 33's __________________ Larry 72 Chevy SWB 4x4 71 Chevy SWB 4x4 My Work Truck "Don't confuse enthusiasm with capability"

07-25-2004, 08:41 PM	#2
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	The 3.73's will do a lot better with the 33's. You'd need 4.10's for the 35's to be in the right rpm range.

07-26-2004, 09:26 PM	#5
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	for towing, stay with the 33s, 3.73s will be ok, but 4.10s would be better for towing.

08-01-2004, 11:30 PM	#6
DivineFord My Name Is Mudd Join Date: Feb 2004 Location: Bangor, Maine Posts: 101	The 3.73's will work for now but plan to gear down to the 4.10's, and that would be a good time to stick in a locker or posi that you may have always wanted matt

08-11-2004, 01:56 PM	#9
1972Supercheyenne4wd Have another!! Join Date: Jul 2004 Location: Pueblo, Colorado Posts: 81	thanks all staying with 33" tires on a 4" lift, thanks for all the info.



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