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Old 09-12-2003, 02:19 PM
tad tad is offline
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360 plymouth build-up

looking to get 450-475 hp out of Plymouth 360 with-out nos. have 727 trans and 8 3/4 rear with 4:10's.need parts suggestions-cam,heads etc

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Old 09-12-2003, 02:24 PM
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There are some great books out on building the small block Mopars. HP Mopor info books.
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Old 06-20-2014, 12:50 PM
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yup ..this book has all the specs. and part numbers to get your desired horsepower.. Good Luck..
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Old 06-20-2014, 09:22 PM
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Start with heads. Edelbrock's Aluminum 2.02 1.68 or larger valves - Large valve(2.02/1.60) "J" heads ported (need the extra flow of porting)
magnum heads flow well also but are prone to cracking. The 576 castings are better.

A roller would be the cam type to use as your going to have to buzz this engine some to get what your looking for, At the least 6K & should be around 6,500
however this cam will get you to around 440hp Cam specs: 216/228-degrees duration at .050-inch valve lift,.484/.512-inch lift with 1.6:1 ratio rocker arms

Compression ratio needs to be at least 10:1 & should 10.5:1

Street. Edelbrock performer & 750dp

15/8 headers w/free flowing X piped 21/2" dual exhaust.
So that's about it. Have you considered stroking this engine to 408?

Good luck
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Old 06-20-2014, 09:31 PM
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He's had 11 years to read up all about it...let's hope he got it figured out....
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