Need opinions....my motor setup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NF65Fleetside · 04-14-2007, 01:17 PM

Hey guys, Im new to all this but recently rebuilt my motor in th 65 c-10. 350 shortblock with 283 heads, Edelbrock perf. int. mani., 4barrel carb, block hugger headers. TH350 with 2800 stall converter....is the stall too much for daily driving/a bit of fwy?...when test driving it, the fawker spun the wheels at any type of throttle pressure! fun...BUT took it on the fwy for a few and it just seems to rev like crazy! not sure if this combo is good for the highway or not.

Jonboy · 04-14-2007, 04:33 PM

Should be fine. What gears are you running? That will be the main factor.

NF65Fleetside · 04-14-2007, 06:17 PM

as far as I know its just the stock rear end, so whatever that is????

desertrat · 04-14-2007, 06:48 PM

I'd say you have a gearing issue, torque conv. sounds like it's doing it's job.

Our trucks came with differant gear ratio's, alot of them with low gears because they where built to work.

jwart · 04-15-2007, 07:28 AM

got 65 also rearend could be anything from 3.07 to 4.11 gearing. mine's 4.11 great for keeping tire companies in business but lousy for hwy. driving 65mph is max i run it at. had to go to 5 core radiator to do that.
jw

NF65Fleetside · 04-15-2007, 03:01 PM

thanks for the info guys.

19GMC63 · 04-15-2007, 03:19 PM

you can always do the test to find out your gear ratio.

With the truck in neutral, jack up one side of the rear end.
If that tire doesn't spin, its a posi, if it does, you got an open differential.
Now jack up the whole rear end so both tires can spin freely.
Mark where the driveshaft meets the rear end so you can count how many revolutions it makes.
If you have a posi, spin a tire one full revolution while counting how many times the driveshaft spins.
If you have an open diff., spin a tire two full revolutions and count how many time the driveshaft spins.
If its a little over 4, you've got 4.11 gears, around 3 3/4, you've got 3.73, ect. ect.

NF65Fleetside · 04-17-2007, 10:20 PM

hehehe, wow thats a kewl test to follow....Ill try that for sure. Thanks

bowtieguy61 · 04-17-2007, 10:33 PM

or you could just pull the diff cover and count the teeth. besides, when is the last time the diff lube was changed????

NF65Fleetside · 04-19-2007, 05:53 PM

Quote:

Originally Posted by bowtieguy61

or you could just pull the diff cover and count the teeth. besides, when is the last time the diff lube was changed????

good point....Im change'n that next week for sure!

04-14-2007, 01:17 PM	#1
NF65Fleetside Registered User Join Date: Feb 2007 Location: Los Angeles Posts: 674	Need opinions....my motor setup Hey guys, Im new to all this but recently rebuilt my motor in th 65 c-10. 350 shortblock with 283 heads, Edelbrock perf. int. mani., 4barrel carb, block hugger headers. TH350 with 2800 stall converter....is the stall too much for daily driving/a bit of fwy?...when test driving it, the fawker spun the wheels at any type of throttle pressure! fun...BUT took it on the fwy for a few and it just seems to rev like crazy! not sure if this combo is good for the highway or not.

04-14-2007, 04:33 PM	#2
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: Need opinions....my motor setup Should be fine. What gears are you running? That will be the main factor.

04-14-2007, 06:17 PM	#3
NF65Fleetside Registered User Join Date: Feb 2007 Location: Los Angeles Posts: 674	Re: Need opinions....my motor setup as far as I know its just the stock rear end, so whatever that is????

04-14-2007, 06:48 PM	#4
desertrat Registered User Join Date: Nov 2006 Location: Pahrump, NV Posts: 1,079	Re: Need opinions....my motor setup I'd say you have a gearing issue, torque conv. sounds like it's doing it's job. Our trucks came with differant gear ratio's, alot of them with low gears because they where built to work.

04-15-2007, 07:28 AM	#5
jwart Registered User Join Date: Sep 2003 Location: n.e. IL border Posts: 208	Re: Need opinions....my motor setup got 65 also rearend could be anything from 3.07 to 4.11 gearing. mine's 4.11 great for keeping tire companies in business but lousy for hwy. driving 65mph is max i run it at. had to go to 5 core radiator to do that. jw

04-15-2007, 03:01 PM	#6
NF65Fleetside Registered User Join Date: Feb 2007 Location: Los Angeles Posts: 674	Re: Need opinions....my motor setup thanks for the info guys.

04-15-2007, 03:19 PM	#7
19GMC63 Registered User Join Date: Nov 2006 Location: Nashville, TN Posts: 1,510	Re: Need opinions....my motor setup you can always do the test to find out your gear ratio. With the truck in neutral, jack up one side of the rear end. If that tire doesn't spin, its a posi, if it does, you got an open differential. Now jack up the whole rear end so both tires can spin freely. Mark where the driveshaft meets the rear end so you can count how many revolutions it makes. If you have a posi, spin a tire one full revolution while counting how many times the driveshaft spins. If you have an open diff., spin a tire two full revolutions and count how many time the driveshaft spins. If its a little over 4, you've got 4.11 gears, around 3 3/4, you've got 3.73, ect. ect.

04-17-2007, 10:20 PM	#8
NF65Fleetside Registered User Join Date: Feb 2007 Location: Los Angeles Posts: 674	Re: Need opinions....my motor setup hehehe, wow thats a kewl test to follow....Ill try that for sure. Thanks

04-17-2007, 10:33 PM	#9
bowtieguy61 Registered User Join Date: Jan 2007 Location: indiana Posts: 52	Re: Need opinions....my motor setup or you could just pull the diff cover and count the teeth. besides, when is the last time the diff lube was changed????



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