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EFI Heads onto a Blue 253

johnmic

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Gday, I have a Blue 253 in my VH Commodore and just want to know would the EFI heads of a later model commodore fit the motor.

Cheers all
 

soop

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Yeah they will.
But you need a new intake manifold, extractors and cam to suit the heads.
 

delcowizzid

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and have to make sure the valves dont hit the bore if its a stock bore size 253
 

SL/ENUT

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It will, valves are to large for the bore.
 

delcowizzid

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he has an oversized bore
 

DANNY8

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Yeah I've done it and it works fine (my bores are 30thou over), haven't really tried it out to much yet. Bit boggy down low but as soon as ya get goin she revs pretty good. I'm just using a stock EFI cam and a quaddy on mine tho. If I get another set of heads I might mock one up on a std bore 253 block and see if the valve will clear. But might not be for a while.
 

delcowizzid

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Yeah I've done it and it works fine (my bores are 30thou over), haven't really tried it out to much yet. Bit boggy down low but as soon as ya get goin she revs pretty good. I'm just using a stock EFI cam and a quaddy on mine tho. If I get another set of heads I might mock one up on a std bore 253 block and see if the valve will clear. But might not be for a while.
i thought you would of injected it LOL
 
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