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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jul 2006 Posts: 23 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2006 Posts: 23 | Wondered if anyone has done this before? It has a newer Chevy 350 with a turbo 400 attached in it now, so......anyone swim in this pool, before I jump in like a fool? Good part is I have a full metal shop so fab in not a problem. Measurements seem good to fit.
Thanks for your input Jeff | | | | | Joined: Jul 2006 Posts: 23 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2006 Posts: 23 | Forgot to mention that the 4bt has a T-18 (T-19?) attached to it that I was thinking of using, my axles are 3.54. Posi in the rear and a 76 Blazer up front I had rebuilt and geared to match the back so I could have disc brakes up front. Added P/S because i'm lazy in my old age. Jeff | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | It is a pretty easy swap. We ran them in Chevy step vans.
They are noisey, smokey, slugish, & vibrate a lot. It kind of depends on what you want to do with it.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jul 2006 Posts: 23 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2006 Posts: 23 | I have a 1971 Airstream that I was going to tow and thought the mileage would be better than my 350, plus I got the entire stepvan for pretty cheap with a good motor and trany. Sluggish and vibrating would be a issue.
Other than that it would be around town and in the hills.
Thanks! jeff | | | | | Joined: Sep 2009 Posts: 46 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2009 Posts: 46 | A 6 bt would be A much better choice and it would be a much more powserfull combo | | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | For a 1/2 ton the 4bt sounds like a great choice to me. lots and lots of info and folks happy with their 4bt conversions over at www.4btswaps.com stop by and have a look. A 6bt is a fair amount of weight and not quite as simple of a swap in a small truck. Grigg | | | | | Joined: Jul 2006 Posts: 23 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2006 Posts: 23 | Thanks Grigg, I found the 4btswaps on one of your threads earlier and spent a hour looking through it. Enjoyed your pics!
I got entire step van for about 800 bucks from a friend, the whole thing is in good condition with a recent T-18 rebuild. I do not know much of anything on that trany. It all drives good though.
Just looking for something to cruise with as I am in not much of a hurry when traveling.
Will not alter the outside of the truck in any manner as they are too good looking in my opinion. Thanks for your insight!
Jeff | | | | | Joined: Mar 2011 Posts: 667 Shop Shark | | Shop Shark Joined: Mar 2011 Posts: 667 | Howdy & Welcome. I'm about to start on a 4BTA conversion myself. The info at 4BTSwaps is excellent and you'll find that engine not only reliable and fuel efficient, but capable of making more hp than most can imagine. I'm going for moderate hp and max torque myself and hope to pair it with either an Allison 5-speed or the new Furd TorqShift 6-speed. | | | | | Joined: Mar 2011 Posts: 667 Shop Shark | | Shop Shark Joined: Mar 2011 Posts: 667 | BTW --- just bought a running 4BTAA with an Allison 545 bolted up. Next stop...the dyno at Diesel Specialists. Fingers are crossed. | | |
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