Drive shaft and limits - The 1947 - Present Chevrolet & GMC Truck Message Board Network

treeboy97 · 02-02-2012, 11:51 AM

I am currently swapping out a 250 Inline to a 350 V8, my question is about my two piece drive shaft. How much horsepower and torque can a stock straight six drive shaft handle? Is there a difference between a drive shaft that was from a inline vrs the trucks that had original V8s?

I have searched and most threads are about going from a two to one piece drive shaft.

It looks like my new engine will be around 400HP at the crank. My truck is a LWB.

Thanks.

Shyguy · 02-03-2012, 12:36 AM

Most people will tell you that a one piece drive shaft is not a good thing with a lwb truck.

It depends which drive shaft the 6 cylinder truck had. My '67 was a 3/4 ton lwb stepper with 6 cylinder and granny 4 speed, it had the large diameter two piece drive shaft with the heavy duty center bearing so when I put a 454 in it I had no problems.

I am sure others will chime in with more info and opinions.

treeboy97 · 02-03-2012, 09:32 AM

What is the difference in diameter of the two different driveshafts? I will measure mine and see where I stand.

Thanks

02-02-2012, 11:51 AM	#1
treeboy97 Registered User Join Date: May 2009 Location: Waynesville, Ohio Posts: 136	Drive shaft and limits I am currently swapping out a 250 Inline to a 350 V8, my question is about my two piece drive shaft. How much horsepower and torque can a stock straight six drive shaft handle? Is there a difference between a drive shaft that was from a inline vrs the trucks that had original V8s? I have searched and most threads are about going from a two to one piece drive shaft. It looks like my new engine will be around 400HP at the crank. My truck is a LWB. Thanks. __________________ 1970 C10 LWB (Grandfather's Truck) 5.3 4L60E 2012 Victory Cross Country Touring I'm not wasting money on my truck/bike, I'm helping to rescue the economy one mod at a time.

02-03-2012, 12:36 AM	#2
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: Drive shaft and limits Most people will tell you that a one piece drive shaft is not a good thing with a lwb truck. It depends which drive shaft the 6 cylinder truck had. My '67 was a 3/4 ton lwb stepper with 6 cylinder and granny 4 speed, it had the large diameter two piece drive shaft with the heavy duty center bearing so when I put a 454 in it I had no problems. I am sure others will chime in with more info and opinions. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.

02-03-2012, 09:32 AM	#3
treeboy97 Registered User Join Date: May 2009 Location: Waynesville, Ohio Posts: 136	Re: Drive shaft and limits What is the difference in diameter of the two different driveshafts? I will measure mine and see where I stand. Thanks __________________ 1970 C10 LWB (Grandfather's Truck) 5.3 4L60E 2012 Victory Cross Country Touring I'm not wasting money on my truck/bike, I'm helping to rescue the economy one mod at a time.



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