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**1project2many** · 07-01-2017, 12:56 PM

Neat idea.

Most of those trucks had hydraulic brakes. If you're only moving the race car then you probably have plenty of stopping power. Those old trucks were never meant to drive on an interstate and keep up with traffic. The 270 is a strong engine but GM would have used final drive gearing to multiply torque for pulling power which usually leads to reduced top speed.

What trans is in there? Are you planning to keep the tandem axles?

07-01-2017, 12:56 PM	#2
1project2many Senior Member Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,217	Re: question about BIG GMC trucks Neat idea. Most of those trucks had hydraulic brakes. If you're only moving the race car then you probably have plenty of stopping power. Those old trucks were never meant to drive on an interstate and keep up with traffic. The 270 is a strong engine but GM would have used final drive gearing to multiply torque for pulling power which usually leads to reduced top speed. What trans is in there? Are you planning to keep the tandem axles?