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Old 09-10-2019, 02:16 PM
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tips for swapping 1984 454 from Winnebago into 89í cop car

Iíve swapped small blocks into s10s, small blocks between full size cars and trucks but havenít swapped a small block for a big block yet.

The motor was rebuilt a few years ago and has less than 1k miles on it. It moves the 26í winny surprisingly well.

The tbi 350 is smoking when it gets a hot restart and it burns oil/ leaks.

I was planning a vortec 406 build but I snagged the rv for 1000$ and drove it home. The interior is full of garbage and smells of urine, busted windows hence the low price.



I want to keep the 700r4 but I will get a new converter maybe stalled a little higher- 2000ish rpm.

Iíd like to use the 454 exhaust manifold also.

Iíd also like to swap the 140 amp alternator I just bought for the 350.
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Old 09-10-2019, 02:18 PM
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Hereís the car.
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Old 09-10-2019, 06:20 PM
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I can't offer any help but I have a strong feeling there's gonna be unexpected difficulties. I'll be following this thread. Hopefully you update it with progress and pictures.
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Old 09-10-2019, 07:02 PM
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I believe the car had electronic fuel management. The motor home did not. That's just one of the snags you will have to address. I would enlist some assistance if I were doing it......
https://www.amazon.com/Complete-Book...s=books&sr=1-6
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Old 09-10-2019, 09:18 PM
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Looks like a good book. I planned on removing the bulb for the check engine light - emissions isn’t an issue where I live. From the info I’ve gathered so far it should drop into the mounts and bolt to the tranny. I was going to use the mechanical fuel pump and Rochester. I will play with the curve on the hei. I’d like to keep the AC but living in AK it’s only nice to have for a month or 2. The accessories and water pump clearance were things that concerned me the most
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Old 09-10-2019, 09:21 PM
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Quote:
Originally Posted by WABOOM View Post
I can't offer any help but I have a strong feeling there's gonna be unexpected difficulties. I'll be following this thread. Hopefully you update it with progress and pictures.
I take pics on builds these days. The hardest part will be keeping the 700r from burning up I imagine. Keeping the od trans will be crucial for my plans to build a fun cruiser. The car has 3.42s and a 8.5 rear
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Old 09-10-2019, 09:38 PM
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That's gonna be a beast. What about the radiator? Are you planning on trying it with the stock rad? Also definitely put a separate trans cooler on it. Preferably with with it's own little electric fan.
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Old 09-11-2019, 08:23 AM
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Stock radiator, I’ll shift kit the tranny. The car has heavy duty cooler on it already. I may throw a temp gauge on the trans.
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Old 09-11-2019, 08:24 AM
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I have a derale cooler like that on my 95 ram diesel street truck.
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Old 09-18-2019, 01:10 PM
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Why do you want overdrive with 3.42 gearing?

I have squarebody with a 700 with 3.42 gearing. Being a squarebody mileage sufferers above 60 so I tend to cruise 60 to 65.

With my 29" tall tires I am cruising around 2000 at 70 (pushing alot of air). Or just under 1700 at 60.

I would like these numbers if I had a diesel. But these both keep me out of peak torque. Driving in 3rd is a real game changer. Makes it better across the board.
2400 at 60. Where I spend a majority of my cruising.
2800 at 70 which actually helps me control my speed and avoid pushing that wall of air.

Now you can install a stall in the 2500 range but your almost never going to be in overdrive.

I had a 96 1500 with a 5 speed and 3.42 gearing. I did not use overdrive till over 80mph. Thing was very happy going 90 but I really needed more gear to make that overdrive useful.

If that motorhome has a th400 or th375(found in motorhomes) I would use that with the 3.42 gearing and be happy.
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