273 commando heads

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Dale Fischlein said:
Lookin good toolmanmike. It looks like I need to send you my heads haha. Would you mind giving some build info this fall when I get ready to build my 273.
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Not my best work but you can read through my build thread. The link is just below this .
 
toolmanmike said:
You cam make them work. I wish I would have had them flowed.

View attachment 1715901984

View attachment 1715901985

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I ran a Comp cam reground on the Isky E4 specs. I also ran the Comp 901-16 valve springs. My buddy has a flow bench and if I remember correctly I picked up a considerable amount of port velocity with the changes made.

Lift ...................... .425"
Duration ............... 260*
Duration @ .050" ... 216*
Overlap ................. 44*

Same lift as 'Stock', but with 12* longer Duration, and an 18*
increase in Overlap.

Good snappy cam for a light car with a 4 speed and some gear in the butt.
 
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Dale Fischlein said:
Definitely more angle than on my heads. That photo will make the difference in finding the correct intake. I missed an intake for sale on fabo about a month ago by one day that had the casting date I am looking for. Everyone has been a big help. Thanks man.
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What intake are you looking for?
 
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