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Old 01-08-2013, 10:18 PM
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My brother put Vortec heads on a 400 SBC and he ran 13.0 sec at the drags with a huge camshaft. He went to a mild camshaft and ran about the same time. He said that was because these heads flow REALLY good. You should gain HP either way.
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Old 01-08-2013, 10:20 PM
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My brother put Vortec heads on a 400 SBC and he ran 13.0 sec at the drags with a huge camshaft. He went to a mild camshaft and ran about the same time. He said that was because these heads flow REALLY good. You should gain HP either way. He was a GM Mechanic for many years.
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Old 01-08-2013, 10:35 PM
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In my 85 C10 , I swapped 601 58cc to vortec 906 heads. They were milled to 60cc. 305 with a perfomer intake on both pre/ and vortec. My comparison would be no loss in pulling power at low rpm. The low end was the same, the mid band was a big difference.

A 305 , Q jet, performer cam, 3.73, 3000 stall, 28" tire. The basic foundation for a driven muscle car/truck.

To be current it is now supercharged, but before it was as stated.

Can you tow a tractor. I have towed as much trailer wieght as my class 3 hitch allowed, hundreds of miles.
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Old 01-08-2013, 11:06 PM
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How does the 3000 stall work while towing? Just curious.
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Old 01-09-2013, 11:24 AM
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It is a th350c 3000 stall built by dynamic converter and followed the manufactures cooler instructions. With the drivetrain it is locked up at 65mph. Backing up with a trailer there is no problem. Normal driving it isnt noticeable . It footbrakes to 2200rpm for a big launch. Temps are normal. Not really sure what tow condition you are worried about. Pulled a weight distribution hitch with 7500lbs trailer, and it was fine.

Most newer trucks have 2600+ stalls.

If you have some concern about stall converters contact dynamic converter. An automatic drivetrain that works together as a package is priceless. The trans can be pulled back in a afternoon , not a big project. Should install a shift kit while you are under there.
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Old 01-09-2013, 09:00 PM
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I was just curious. I had a 68 camaro with a 3500 stall and 4.11 and I used to run a 3000 stall with 456's.
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