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Forums->Hot Heads Tech Talk->270 poly to a hemi

vietnam7071
270 poly to a hemi


Can a 1955 270 poly engine be converted to a hemi by using 270 heads, intake and manifolds?Thanks again going to build some Hemi's. PS love this sightbiggrin














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on: Sat 05 of Jan, 2013 [02:02 UTC] reads: 13942

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Jack
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Re: 270 poly to a hemi
on: Sat 05 of Jan, 2013 [17:21 UTC] score: 0.00

You also have to change pistons.
Intake manifold yes, exhaust no.


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author message
George
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Re: Re: 270 poly to a hemi
on: Sun 06 of Jan, 2013 [01:11 UTC] score: 0.00
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> You also have to change pistons.
> Intake manifold yes, exhaust no.
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> > You have to change the head assenbly, including ex mans & push rods. Intakes interchange. Hemi pistons, I'd recommend custom forged with a measured 9 or 10:1. stock cast replacement 270 hemi pistons are rated @ 7.6 & could be a full point lower when measured! A new hemi cam for the real C/R is recommended.
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