Thread: 318 poly vs a 413

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"......I would use any Hemi except the 413, the odd ball Hemi, parts are expensive! and they don't make alot of parts for them!
Put Hemi heads on the poly motor......"




The 413 is an RB engine not a Hemi (chrysler never made a Hemi displacing 413 CI).

Unlike some of the other Ploy engines the 318 will not accept Hemi heads.


I would say unless you already have a 413 I'd look for a 440. If memory serves correctly the 413 would be incorrect anyway as the 426 wedge replaced it in 65. While many parts interchange between the 413/426 wedge/and 440 pistons can be extremely expensive for the 413/426 engines. There's no replacement for displacement and the 440s are a lot easier to come by.

As big tracks said you will need a big block transmission.