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Hot!Oval port conversion to D port

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NeilR
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2019/07/16 21:44:40 (permalink)
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Oval port conversion to D port

I have a V6 GT and the engine is in need of a rebuild. The car was originally my Uncles car, bought new in 1970. He's not that well and I'd like to get it running well. 
With the engine rebuild I would like to get in the order of 180-190bhp out of it and have heard much of D port heads. What parts are needed for the conversion?
#1


2 Replies Related Threads
    Johnscapris
    Enthusiast
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    Re: Oval port conversion to D port 2019/07/17 07:50:19 (permalink)
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    Hi Neil,
     
    Pistons:  11.5 to 1 compression cast will be OK.
    Heads:  D port with 1.75 inlet, 1.5 exhaust with exhaust seats.  A professional port mods.
    Inlet manifold:  D port with port matching and internal port mods.
    Camshaft:  duration of 245 degrees at 0.050 with lift of 0.350 inch.
    Rocker rollers:  1.5 or 1.6 ratio that will provide valve lift of 0.500 inch.
    Valve springs:  Duel 100lb on seat and 250lb open.
    Ignition:  Recurved dissy with electronic ignition.
    Carby:  a 40dfav will achieve the 180 HP you are requiring.
     
    Good luck.
    Regards
    John
     
     
     
     
     
     
    #2
    NeilR
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    Re: Oval port conversion to D port 2019/07/17 17:36:18 (permalink)
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    Thanks for the reply John, the CR surprises me - it seems very high for an iron Heron head engine.
    #3

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