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im looking at buying a set of alloy heads.
if a pair of assembled heads say flows 550hp whatdoes that mean?
engine power rating ???
also will aftermarket 350alloys fit on a original hk 307 motor??
cheers
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u joking ???
come on surely some one can help with this one
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Never heard the term Flow to HP Rating.
Only CFM (cubic feet/minute) It's done on a flow test rig measuring the volume of air through each port in a 1 minute time frame. These test rigs nowadays are all electronically controlled. Not like the ones I've
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Rank: Member
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Never heard the term Flow to HP Rating.
Only CFM (cubic feet/minute) Its done on a flow test rig measuring the volume of air through each port in a 1 minute time frame. These test rigs nowadays are all electronically controlled. Not like the ones Ive u
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I think there is an equation for multiplying the CFM to get a horsepower figure. I think its somewhere around the x 2 mark.
Ill check my book at home and post the figure.
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I think there is an equation for multiplying the CFM to get a horsepower figure. I think its somewhere around the x 2 mark.
I'll check my book at home and post the figure.
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If your thinking of using the Procomp alloy heads dont bother because they are no very good. Look here - http://www.gmh-torana.co...ic=18160&hl=alloy+heads
James
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yes, much better off working the VN heads with the $1500 youd spend on procomp. the COME alloys are $2500 bare. they are a very good head.
If nissan motorsport is nismo, then doesn't that make honda motorsport Homo?
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yes, much better off working the VN heads with the $1500 youd spend on procomp. the COME alloys are $2500 bare. they are a very good head.
If nissan motorsport is nismo, then doesnt that make honda motorsport Homo?
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According to Max Ellery's "How to rebuild and hotrod Holden V8"..."to calculate horsepower, multiple CFM by 2.174."
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According to Max Ellerys "How to rebuild and hotrod Holden V8"..."to calculate horsepower, multiple CFM by 2.174."
Rock n Roll |
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Shows you how silly a 350cfm carby on a 202 is.
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If we all had the same (good) taste, who would buy all the Fords? |
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If we all had the same (good) taste, who would buy all the Fords? |
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how much do the black 202 heads flow?
If nissan motorsport is nismo, then doesnt that make honda motorsport Homo?
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how much do the black 202 heads flow?
If nissan motorsport is nismo, then doesn't that make honda motorsport Homo?
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220-230 or with a tidy up 250 -260
MONARO!!WHERE!!NICE |
MONARO!!WHERE!!NICE |
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Sorry for the confusion here, when referring to CFM it is the CFM of the heads not the carby.
The standard heads (XT5)exhaust flow 110 CFM on a blue 308. Using 110 * 2.174 = 240 odd horsepower.
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and how far can they be opened up (regardless of airspeed, its for forced induction)
If nissan motorsport is nismo, then doesn't that make honda motorsport Homo?
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and how far can they be opened up (regardless of airspeed, its for forced induction)
If nissan motorsport is nismo, then doesnt that make honda motorsport Homo?
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Yeh, Aftermarket alum or iron heads will fit a 307 chev.
As someone else said, steer clear of pro comp stuff.
These days it's cheaper to buy a new set of heads than getting old heads ported etc. Plus the aftermarket ones will usually flow better out of
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Yeh, Aftermarket alum or iron heads will fit a 307 chev.
As someone else said, steer clear of pro comp stuff.
These days its cheaper to buy a new set of heads than getting old heads ported etc. Plus the aftermarket ones will usually flow better out of
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