04-02-2005, 01:19 PM | #1 |
Junior Member
Join Date: Jun 2001
Location: webster,n.y.,usa
Posts: 127
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3:07 gears
i"m doning a full frame off on my 72 blazer . new motor/tranny both 350's with 3:07 gears and L 78 -15 or p 235 will the truck be a gutless slug.are 3:73 the way to go thanks
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04-02-2005, 01:32 PM | #2 |
Registered User
Join Date: May 2000
Location: Petrolia,Ontario,Canada but working in Port Huron,Mi.
Posts: 1,772
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3:73 are an all-round good gear ratio.Good in the city and fine at hwy speeds.
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71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE |
04-02-2005, 01:45 PM | #3 |
Junior Member
Join Date: Jul 2004
Location: Bend, Oregon
Posts: 37
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I have both 350's as well with 4:11, and was told by club members that 3:73 is the way to go.
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04-02-2005, 04:20 PM | #4 |
Registered User
Join Date: Mar 2003
Location: Northern Illinois
Posts: 2,181
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Well, that's a religious question. Personally I find that my Blazer with 3.07s isn't slow at all. It's not a hotrod, but I built it trying to get good gas mileage, not burn rubber.
Brian |
04-02-2005, 11:27 PM | #5 |
SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,038
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My '72 has 235/85R16 and 3.07's. It is a stock combo so it is definately very driveable. I don't notice any lack of power in my truck, but I would like to swap up to the 3.73s and get a slightly larger tire. My '69 has 4.10's with 35" tires but since that truck has a built 350 and a shift kit, it is hard to judge the difference.
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
04-03-2005, 12:45 AM | #6 |
PROJECT 7DEUCE
Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,606
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I really like my 3:73's with the 32x11.50 tire and a crate motor moves it pretty good..
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GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
04-03-2005, 01:12 AM | #7 |
Registered User
Join Date: Apr 2004
Location: Willits Ca
Posts: 261
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I'm running 260 hp 350ci, SM465, 307 gears, 33x12.50x15. I'm turning about 2200 rpm @ 65 mph in fourth gear.
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