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Old 08-23-2012, 09:48 PM
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want to save original 283 in 57 chev 3200

I want to keep the orig 283 in my truck but have a 1988 chev 2500 donor
I am taking the 5 speed from.It has a 305tbi that runs well and I would like to know if anyone has used 305 heads/intake /tbi on a 283 ?

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Old 08-24-2012, 06:41 AM
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Combination should work out well. Bolt on swap. Also much better/cheaper than having the 283 heads re-conditioned. Install a soft plug in road draft tube hole.
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Old 08-24-2012, 07:39 AM
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keep in mind, the 5LM-60 5spd from the '88 is a peice of crap that's hard to rebuild and harder to find parts for.. If you do run it, gear it higher. TBI heads tend to pull very well at around 1,500 RPM, so if you can get it to 1,500 RPM's at 60 MPH it would be about perfect. TBI heads pull less and less all the way up to 3,800 RPM. They peak right around 2k
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Old 08-24-2012, 10:09 AM
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x2 on that 5spd. It'll be alright as long as you don't need parts. You may want to scour the yards and find a core one in good shape to stick under a bench,
Me, Id put a 200-4r or a modified T5 from a V8 camaro, with the S10 tail housing. This gives you the right shifter placement, the cable op speedo and a littany of shifter handle stubs for your bench seat.

You can use the TBI heads, but as said before they're kinda weak knee'd for a performance build. It'll certainly be a neat truck. You're gonna want to be careful on your gear ratios. There are calculators to help with rpms at x speed with y gear ratio. You'll need to know the ratio of the overdrive unit, the rolling diameter of the tire and your axle choices.

Another trans option if you can find one; is the New Process A833-OD. This is based on the 833 mopar 4spd, but it has a mild internal ODrive gear. It was used in GM pick up trucks. Its small, compact, doesn't eat a lot of power either and will have truck ratios. Make sure you keep the shift linkage oriented properly; if the 3-4 linkage is installed upside down, you'll have OD in 3rd and Direct drive in 4th. Makes for an interesting late night phonecall LOL
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Old 08-25-2012, 11:19 PM
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Thanks for your input.The truck has a 3 spd standard so the rear end is
probably geared OK for the 5spd.I think it may just be easier to use the 305
and wrap the 283 up as original . Is there a cam that can be used in the 305
to beef it up a little?This will be a daily driver so I'm not looking for huge
power .
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