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Nov 15, 2014 | 08:33 PM

72explorer

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Rebuild time

Alrighty guys I wanna build the original 302 that came in my 72 explorer. Can anyone help give me advice on how to build it or a low budget build? I already have an entire engine along with new 10.5:1 forged Pistons and a lunati cam. I wanna see about a different set of heads maybe gt40s or gt40p. Any advise appreciated

Nov 15, 2014 | 10:04 PM

HIO Silver

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From: NorCal

Quote:

Originally Posted by 72explorer

Sure. Read, read, read...

ENGINE BUILDS
... Engine Cores, Planning & Research, Picking a Machine Shop, and More
... Build Your First Engine
... How to Engine Rebuild for Cheap!
... Build Your First Performance Engine

302
289/302 Build - Mustangs Monthly
Popular Hot Rodding - 396hp 302W Build-Up

Nov 15, 2014 | 10:13 PM

351Cleveland C4

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From: On the Edge of the Desert

^ what HIO said. You can build a 302 to do anything. So read and figure out the basics, ask questions when you need help.

Nov 16, 2014 | 06:15 PM

72explorer

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Well after reading it looks like I can achieve a good amount of power with my current Pistons and cam good heads probably gt40s a edelbrock performer 289 and 650cfm carb I can do the valve job myself. Here's my question. I couldn't find anything on it so ill ask. How many hp and tq can a stock 72' 302 handle before splitting?

Nov 16, 2014 | 06:41 PM

351Cleveland C4

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From: On the Edge of the Desert

Before blowing to bits? Probably 400 hp at 6,000rpm. Maybe not. Depends on the conditions.

Nov 16, 2014 | 07:30 PM

HIO Silver

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From: NorCal

Quote:

Originally Posted by 72explorer

Thanks for reading the articles. We appreciate it.. it beats us blubbering from our fingers.

A rule of them for "old technology" is one HP per cubic inch of displacement. Of course these days electronicially controlled, electronically monitored, and software-based engines can make 1.5 HP per cube rather easy.

But instead of concerning yourself about HP, torque is what you need to move these rigs off the line. A broad torque curve should be your goal with these heavy trucks.

Quote:

Originally Posted by 351Cleveland C4

Before blowing to bits? Probably 400 hp at 6,000rpm. Maybe not. Depends on the conditions.

If it was Clay, he could get an easy 450 HP for $2,000. Remember that knucklehead?