72 C10 - 307 vs 283 - Need Torque - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-02-2002, 10:36 AM
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Post 72 C10 - 307 vs 283 - Need Torque

What (basically) I've got:
Stock 307
Stock 283
Stock Manual Tranny

The challange: With minimal engine digging, I want enough Torque to tow around 5000 lbs (ie, a c10 pickup pulling a c10 pickup) and of course I want to run 65-70 on the highway like a normal person without my engine sounding like a jet engine.

I need to keep costs reasonable.
annnnd I don't want 350.

I should mention this isn't a show truck, its a work truck, so scrounging in a junkyard isn't above me.

Think of it like a story in a car mag... trying to get a hauler out of a 283.. or a 307.

[ December 02, 2002: Message edited by: icegnome ]</p>

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Old 12-02-2002, 12:06 PM
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307=283 with a 327 crank. which is 3.25 stroke if you have the right block you can bore it to 4.0 ,get a set of 4.0 inch pistons and build a 327.a 283 has 3.875 bore x 3.0 stroke.now with a 307 there has been releifs machined into the bottom of the cylinders to allow for the 327 crank.283's are good for endurance,we used one in our hay truck for years and it hualed horses for years prior to that but,i think you would be better off using the 307.
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Old 12-02-2002, 03:11 PM
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Thanks Man, but I'm not looking to bore it out.

What I'd rather do is get heads, cam, manifold, carb, and headers for maximum torq, and I'm pretty sure I want to use the 283.
lmk

So any combos off the top of anyone head?
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Old 12-02-2002, 09:34 PM
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I`d run the 307 with a comp cams 252H cam, double roller timing chain, free flowing exhaust, edelbrock performer intake and Q-jet carb. or if your running a 2 barrell carb, they work great also for torque engines, so i`d stick with it and the intake if so. I`d also get a good set of spiral core plug wires.
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Old 12-03-2002, 09:29 AM
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don't forget,the biggest valves you can put on a 307 is 1.94 because of the bore.
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Old 12-03-2002, 10:43 AM
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If it was me I would pick the 307. Two reasons more displacement and longer stock. The longer stroke will give you more off idle power and low rpm torgue.
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