1978 k10 gets wound up at between 55 and 60 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shipma3 · 03-18-2012, 09:02 PM

the motor gets way wound up on the freeway at 55 or 60, i beleive it has either 373 or 411 gears, is there anything i can do sans putting another rear end underneath it. motor has tons of power just gets wound up at 60

INSIDIOUS '86 · 03-18-2012, 09:14 PM

You can not put a new rear end in and instead just do a overdrive transmission. So pick your poison lol
Posted via Mobile Device

cory d · 03-18-2012, 09:15 PM

overdrive, 4 speed manual (new process, not muncie) or higher rear end gears

Keith Seymore · 03-19-2012, 11:39 AM

any of the above, or drive slower.

K

AntiGov · 03-19-2012, 06:50 PM

lift and larger tires

76stepsidechevy · 03-19-2012, 08:09 PM

Quote:

Originally Posted by AntiGov

lift and larger tires

Thats the route I went. My truck is fairly happy on the highway now with 3.73s and 35s with the muncie 4 speed. When I got it it had 265/75r16s prob about a 31 or 32 and it screamed on the highway. Lost some power off the line but with the amount of highway driving I do with my truck it was worth it.

customisaak · 03-19-2012, 08:23 PM

Quote:

Originally Posted by AntiGov

lift and larger tires

Good call, my 4.10 th400, stock tire combo cost me a head gasket doing 4000rpm too long on the highway. i was too cheap for a lift but made the 37" toyos fit, now it loves the highway lost over 1000RPM

03-18-2012, 09:02 PM	#1
shipma3 Registered User Join Date: Mar 2012 Location: manti utah Posts: 67	1978 k10 gets wound up at between 55 and 60 the motor gets way wound up on the freeway at 55 or 60, i beleive it has either 373 or 411 gears, is there anything i can do sans putting another rear end underneath it. motor has tons of power just gets wound up at 60

03-18-2012, 09:14 PM	#2
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: 1978 k10 gets wound up at between 55 and 60 You can not put a new rear end in and instead just do a overdrive transmission. So pick your poison lol Posted via Mobile Device __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

03-18-2012, 09:15 PM	#3
cory d Registered User Join Date: Dec 2011 Location: Arlington WA Posts: 1,728	Re: 1978 k10 gets wound up at between 55 and 60 overdrive, 4 speed manual (new process, not muncie) or higher rear end gears __________________ GMC C15 355 SM465 3.73 80 C10 cruiser build thread 79 short stepside crew cab. big and ugly. build thread

03-19-2012, 11:39 AM	#4
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,226	Re: 1978 k10 gets wound up at between 55 and 60 any of the above, or drive slower. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

03-19-2012, 06:50 PM	#5
AntiGov Registered User Join Date: Oct 2011 Location: central Oregon Posts: 1,225	Re: 1978 k10 gets wound up at between 55 and 60 lift and larger tires __________________ 88 3+3 454 400 205 410 drw to srw still in pieces 90 3+3 350 400 205 410 srw 84 1/2 ton lb 6.2 4x4 parts truck



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.