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427 h.p. questions
I just built a std bore 427 with trw 12.5:1 pistons on 3/8 dimple rods, 6223 crank , gm 840 heads sq. port closed chamber 2.19/1.88 valves, comp .638/.638 solid flat tappit cam, single plane intake, 1050 dominator, what kind of power could I possibly be making with this setup??? I will be changing the upper half to a set of 840 heads ported and 2.25/1.88 valves with a .760/.760 roller what kind of increase will this give me or is it the right combo?? thanks
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right combo for what ? the 760/760 roller what is the dur @050 i have some customers with build s a bit like this hi 500s mild 600hyp for the bigger heads and cam your going to have to twist this up a alot harder with bigger cam and heads may work for you or not .you are lacking much info to say any thing
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probably need some serious piston notching for. 760 lift
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Yep i built many of this engine with a stock trw speed /pro speed a PV starts getting cose in 600 lift so less fly cut now you must be very close . the 2.250 valve going to add to less piston to valve . so as Jerry said .you must add this to work on your new build. i gone to rollers mild 600s had to fly cut the pistons
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the pistons are fly cut and the duration @50 is 280/280 advertised duration 312/312 for the 760 roller
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