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Old 03-15-2016, 08:57 PM   #691
1972RedNeck
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Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
Re: Project: Turbo 250

Quote:
Originally Posted by longbed67 View Post
Well the first major change was switching from the turbo'd 250 motor and 4 speed to a Cummins 4BT Recon motor and matching NV4500 trans with a twin disc mating them. I have since upgraded the OEM turbo from a 18cm H1C holset with a 42mm compressor to a 12cm H1C with 54mm compressor so a 40% upgrade in turbo size, I am currently fabricating a ram air intake for the turbo to further increase efficiency, and have advanced the motor timing. I am also currently upgrading the entire air suspension from our own control system where I ended up having some valve issues to a full accuair e-level system.
You ought to go over to 4BT Swaps and do some looking into the Super HX30W...
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1966 F250 4X4 416
1972 K20 350 4 OTF
Quote:
Originally Posted by GASoline71 View Post
I once pulled an intake manifold for a cam swap... ended up with a full on drag car that ran in the 11's.
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