67 4 speed torqe capabilities ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67 chevelle · 04-06-2014, 03:31 PM

Hey guys got another , 67 c10 factory 283 with a 4-speed , I guess toploader , what type of torqe will it indure , guy said its a grany gear trany , not in my possesion yet , will it take the 500ftlbs my 383 makes ? , or will it granade on me ?

hugger6933 · 04-06-2014, 06:39 PM

No, but not gonna be much fun to drive either with that gradma low it is pretty useless, unless you are pulling up stumps or anything that isn't tied down on every end. At about 15 MPH you will be past wound out and she'll be screaming for a shift. If you make it that far some want to be shifted before then

airdale94 · 04-06-2014, 06:39 PM

http://www.novak-adapt.com/knowledge/sm420.htm

It should be the SM420. It's a truck transmission. It should handle the torque for any truck duties. As far as raging burnouts or powershifting, I would say not.

Willys47 · 04-06-2014, 07:38 PM

the sm420 was even installed in big school busses in the day so they are tuff. But no way are they a fun tranny unless you like 4x4ing and going slow. But I like that to.

04-06-2014, 03:31 PM	#1
67 chevelle Registered User Join Date: May 2013 Location: WEST PALM FLORIDA Posts: 1,174	67 4 speed torqe capabilities ? Hey guys got another , 67 c10 factory 283 with a 4-speed , I guess toploader , what type of torqe will it indure , guy said its a grany gear trany , not in my possesion yet , will it take the 500ftlbs my 383 makes ? , or will it granade on me ? __________________ 68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive

04-06-2014, 06:39 PM	#2
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,261	Re: 67 4 speed torqe capabilities ? No, but not gonna be much fun to drive either with that gradma low it is pretty useless, unless you are pulling up stumps or anything that isn't tied down on every end. At about 15 MPH you will be past wound out and she'll be screaming for a shift. If you make it that far some want to be shifted before then

04-06-2014, 06:39 PM	#3
airdale94 Registered User Join Date: Jan 2007 Location: Topeka,KS Posts: 778	Re: 67 4 speed torqe capabilities ? http://www.novak-adapt.com/knowledge/sm420.htm It should be the SM420. It's a truck transmission. It should handle the torque for any truck duties. As far as raging burnouts or powershifting, I would say not. __________________ 68' C20. 283CI w/55CC 305HO heads, NP435 Close Ratio, Corp. 14 bolt FF 3.21, 75' front end swap (everything but the X-member).

04-06-2014, 07:38 PM	#4
Willys47 Registered User Join Date: Dec 2007 Location: Nanaimo B.C. Posts: 604	Re: 67 4 speed torqe capabilities ? the sm420 was even installed in big school busses in the day so they are tuff. But no way are they a fun tranny unless you like 4x4ing and going slow. But I like that to. Attached Images __________________ I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!!



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