580ci HELP
#1
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580ci HELP
HI, I WOULD LIKE TO KNOW IF ANYONE CAN HELP ME ESTIMATE THE HP AND TQ MY ENGINE WILL MAKE WITH THIS COMBI THAT I HAVE. 580CI CHEVY, MERLIN 345CC IRON HEADS PORTED, 9.5:1 COMP, MERLIN SINGLE PLANE REWORKED BY WILSON MANIFOLDS, 1050 DOMINATOR HOLLEY, CRANE CAMS #138101 MECH. ROLLER 254/262 DUR. 112 LOBE .714/.714 LIFT. ANY INPUT WILL HELP. THERE IS NO DYNO AVAILABLE IN THE VIRGIN ISLANDS THATS WHY I NEED INPUT. THANKS.
#2
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You have a better breathing version of my 572". You have bigger 345cc heads versus I hogged out a set of 320cc Merlins. You have 9.5:1 compression versus my 8:1 which gives you a 6% additional hp. You have a bigger cam. We have the same carb and I ran a single plane Brodix intake. Guessing 760hp.
Chuck
[ 02-11-2002: Message edited by: One Big Screw ]
Chuck
[ 02-11-2002: Message edited by: One Big Screw ]
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With stock parts it comes very close. One area of uncertainty is in the heads. I choose "fully ported rect. port with 2.30" int. and 1.90" exh". This is just a guess that is probably close to what you have. If you have the flow numbers I can enter them in and probably get a little closer. The next option for heads if you don't know your flow is pro stock heads, which are like a fully ported big chief. I doubt your heads flow this good. On an LS6 Chev. the numbers come out right at 460 hp which is what the advertised power is.
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THANKS WETTE VETTE FOR THE INPUT. ANYONE ELSE HAVE ANY INPUT THAT CAN HELP ME KNOW WHAT I CAN EXPECT. WETTE VETTE MY HEADS WAS DONE BY JIM VALAKO AND I AM GOING TO GET THE FLOW # FROM HIM SO I CAN GIVE YOU. THANKS.