big or small block - The 1947 - Present Chevrolet & GMC Truck Message Board Network

brad20653 · 07-25-2003, 07:58 PM

What do u think in my 72 chevy long bed big block or small ?? I want alot of take off power with just stock ??

lukecp · 07-25-2003, 08:03 PM

The big block is going to make more power....especially if it is a 454....but parts are more expensive and you will be lucky to get more than 12mpg out of almost any big block

brad20653 · 07-25-2003, 09:13 PM

its just my 350 has only 300 miles on it and no power at all whats a single change i could do to give it low end power cam ??

lukecp · 07-25-2003, 10:38 PM

So you have a rebuilt 300 mile 350?

If it is a stock motor...it should have a small cam and be good for low end power. Keep in mind it won't make full power until it is broke in...full break in will happen after 4000 or so miles. Assuming your carb and ignition is in good shape, and you want more low-end power, you will proably want to do some simple upgrades...if you have single exhaust, switch to a set of free-flowing dual pipes, if you already have duals a pair of headers might make a difference in low end power, maybe a aftermarket dual plane intake manifold, and if you have a 2bbl carb, a switch to a 4bbl would make quite a difference.

Tx Firefighter · 07-25-2003, 11:07 PM

Quote:

Originally posted by brad20653
What do u think in my 72 chevy long bed big block or small ?? I want alot of take off power with just stock ??

If you want a lot of take off power, you're looking about 10 feet too far forward.

Change the gears to a deeper ratio. That'll do it.

miket · 07-26-2003, 01:37 AM

okay to confuse things abit...how about a "BIG" small block...383/396/406/427/454?

Or a "BIG" big block? 496/502/540/572/632?

07-25-2003, 07:58 PM	#1
brad20653 Senior Member Join Date: Jul 2003 Location: So. MD Posts: 218	big or small block What do u think in my 72 chevy long bed big block or small ?? I want alot of take off power with just stock ??

07-25-2003, 08:03 PM	#2
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	The big block is going to make more power....especially if it is a 454....but parts are more expensive and you will be lucky to get more than 12mpg out of almost any big block __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

07-25-2003, 10:38 PM	#4
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	So you have a rebuilt 300 mile 350? If it is a stock motor...it should have a small cam and be good for low end power. Keep in mind it won't make full power until it is broke in...full break in will happen after 4000 or so miles. Assuming your carb and ignition is in good shape, and you want more low-end power, you will proably want to do some simple upgrades...if you have single exhaust, switch to a set of free-flowing dual pipes, if you already have duals a pair of headers might make a difference in low end power, maybe a aftermarket dual plane intake manifold, and if you have a 2bbl carb, a switch to a 4bbl would make quite a difference. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

07-26-2003, 01:37 AM	#6
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	okay to confuse things abit...how about a "BIG" small block...383/396/406/427/454? Or a "BIG" big block? 496/502/540/572/632? __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

07-25-2003, 09:13 PM	#3
brad20653 Senior Member Join Date: Jul 2003 Location: So. MD Posts: 218	its just my 350 has only 300 miles on it and no power at all whats a single change i could do to give it low end power cam ??



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