657 to 717 swap questions

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k.trojcak

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bought a 717 to put in my 94 spx. I have the carbs, intake, and exh manifold on the 717. I have done lots of searching and reading, but still have a few questions.
1. if I put electronics from the 657 on 717 where do I get a higher rev-limiter, and how do I change it?
2. will my old exh work on the 717 manifold if I re route the water lines?
3. Is there any thing else I need before doing the swap?

I do have some mechanical ability, but I mostly only work on diesel engines. thanks for any help.
 
1) Back in the day... MSD and "Micro Touch" made aftermarket rev-limiters. Hook them up as per their instructions.

2) Yes... but the 650 pipe isn't the best for the 720 engine.


3) Nope. It should be a bolt in project.
 
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