how much power out of this 347 combo?
01-10-2005, 03:11 PM
#11
5th Gear Member
Join Date: Mar 2004
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Posts: 4,813
RE: how much power out of this 347 combo?
ORIGINAL: vfast
no one can..as we don't know ..cam profile,header dia., heads used ie valve size etc.......
no one can..as we don't know ..cam profile,header dia., heads used ie valve size etc.......
01-10-2005, 06:25 PM
#12
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Join Date: Jan 2004
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Posts: 850
RE: how much power out of this 347 combo?
OHSO can you explain this forula better or can anybody else i would likek tpo know it. THANKS
ORIGINAL: ohsoquik02
well you figure 15 hp for ever .5 in cr so your up 1.5 above stock.. that in theory is 45hp.. now since you got a 347 that should give you a total of 40 more just in CI so now your at 85 intheory. so say you now have 300hp without cam and heads and intake. you have a pretty good size cam there and intake and some tw heads...are they worked? with a good tune you could be well over 400 hp up arond 500 but with a poor or average tune you can be probably around 400..
well you figure 15 hp for ever .5 in cr so your up 1.5 above stock.. that in theory is 45hp.. now since you got a 347 that should give you a total of 40 more just in CI so now your at 85 intheory. so say you now have 300hp without cam and heads and intake. you have a pretty good size cam there and intake and some tw heads...are they worked? with a good tune you could be well over 400 hp up arond 500 but with a poor or average tune you can be probably around 400..
01-10-2005, 07:38 PM
#13
6th Gear Member
Join Date: Nov 2003
Location: Pittsburgh, PA
Posts: 5,182
RE: how much power out of this 347 combo?
the mans cam specs are stage 2 224/232 .542/.563 rpm range is 2500 to 6000
his intake specs 75mm plenium 2500 to 7250 rpm range
heads specs are 202/160 61cc
see In OE-style sefi HO motor.. each half point increase in compression ratio [above 9.1] produces an approximate increase of 15hp
so stock is 9.1 and he is now say 10.5 that is a total of 1.5 rounding off... so that is 3 [.5] which would be 15 X 3 = 45hp. increase of 45 hp just in compression
now typically when ppl go to a 347 from a 302 that 45cubic inches. most ppl see close to 40 hp increase just from displacement in OE-style SEFI HO motor
so 45 from CR and 40 from CI and 225 stock is 305 in just numbers[theory] on a 347 OE style SEFI ho motor
his intake specs 75mm plenium 2500 to 7250 rpm range
heads specs are 202/160 61cc
see In OE-style sefi HO motor.. each half point increase in compression ratio [above 9.1] produces an approximate increase of 15hp
so stock is 9.1 and he is now say 10.5 that is a total of 1.5 rounding off... so that is 3 [.5] which would be 15 X 3 = 45hp. increase of 45 hp just in compression
now typically when ppl go to a 347 from a 302 that 45cubic inches. most ppl see close to 40 hp increase just from displacement in OE-style SEFI HO motor
so 45 from CR and 40 from CI and 225 stock is 305 in just numbers[theory] on a 347 OE style SEFI ho motor
01-10-2005, 07:41 PM
#14
I ♥ Acer
Join Date: Jul 2003
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Posts: 11,394
RE: how much power out of this 347 combo?
why do you and me have to find this stuff for him..I know all the spec of the cam etc but I'm not going to do the leg work for him..this is what the fun is about being a racer and not just a driver like some many people are
01-10-2005, 07:47 PM
#15
6th Gear Member
Join Date: Nov 2003
Location: Pittsburgh, PA
Posts: 5,182
RE: how much power out of this 347 combo?
yea i know its the same damm questions over and over again. no one can truely say anything about times or hp figures. way to many variables...**** gets old time after time........one main reason im a dick
01-10-2005, 10:53 PM
#16
Thread Starter
Join Date: Jan 2005
Posts: 10
RE: how much power out of this 347 combo?
thanks for the responses. I am not just a driver! I am a racer and am going to do alot of racing this year. i already have 21 races scheduled for my self. hope to get in a few fun ford weekends and buick-ford shoot-outs also.
I was just asking about the combo because this is my first ford build up. and i figured id try to get some sort of insight into the power of ford.
later
I was just asking about the combo because this is my first ford build up. and i figured id try to get some sort of insight into the power of ford.
later
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