? about alum heads
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From: northern va
? about alum heads
im looking at a set of canfield casted heads
195cc runners
60cc chambers
2.02 1.60 valves
my ? is i dont know much about this set of heads are they any good and is it a bad idea to buy used alum heads? i know the specs are ok its the manufacter that i ? is it holley made?
195cc runners
60cc chambers
2.02 1.60 valves
my ? is i dont know much about this set of heads are they any good and is it a bad idea to buy used alum heads? i know the specs are ok its the manufacter that i ? is it holley made?
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Heads that big will push the whole powerband up several thousand rpm on a naturally aspirated motor. Basically it won't make any usefull power below 3000rpm and you'll have to spin it to 7000 or 8000rpm to get into the meat... great for drag racing but lousy on the street.
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165cc intake runner is more appropriate for a smaller engine.
with the big canfeilds you would loose some bottom end grunt due to the slow moving intake charge.
a huffer kinda equals the playing field and big heads are a nice combo with forced induction
with 2.02 valves in a small ford you may need to fly cut the pistons for clearance with anything over a stock cam(there may be room but i wouldn't risk it
with the big canfeilds you would loose some bottom end grunt due to the slow moving intake charge.
a huffer kinda equals the playing field and big heads are a nice combo with forced induction
with 2.02 valves in a small ford you may need to fly cut the pistons for clearance with anything over a stock cam(there may be room but i wouldn't risk it
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From: northern va
if i get 165cc heads will the work well w/ forced induction or will i be recommended to get bigger heads? and conanski i talked to you about hp and tq numbers and how much would i gain even if they are to big for n/a
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adding forced ind to any engine will increase its output by approx %30 so even with stock heads it will make a huge improvement.
adding anything that will help it breath like heads or cam will only increase your numbers in the end.
so if you build it with low end grunt and streetabuilty then add forced ind you can go wrong.
now if you want to make 500hp you will need the biggest baddest stuff on tap but small fords tend too saw themselves in half at those power levels.
165 heads and a blower with the proper tuning and fuel system to back it will make anywhere from 350-450hp
adding anything that will help it breath like heads or cam will only increase your numbers in the end.
so if you build it with low end grunt and streetabuilty then add forced ind you can go wrong.
now if you want to make 500hp you will need the biggest baddest stuff on tap but small fords tend too saw themselves in half at those power levels.
165 heads and a blower with the proper tuning and fuel system to back it will make anywhere from 350-450hp
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Is this for your Mustang? A street hottie type? No worries then. They're not ideal but if the price is right they'll scream. That goes double if you're planning on a blower.
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From: northern va
yeah its for the mustang and it will be on the street almost all its life, but i will have a 498 lift cam and a 2500 converter so im thinking mid to high (6k) rpm. i just dont want to have to buy another set in a few years and im working on the price. what is a fair price for used heads (perf)
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im not sure you will loose any hp at al it will just move your average hp peek up the rpm band.
if you plan on a 2500 converter you really can go wrong especially if you use a smaller carb/throttle body till you add the charger.
just make sure you check the clearance between the piston and valves small fords tend to be real cloase.
are you using aftermarket pistons?
if stock what year are they?
watch out for the 85-86 flat tops its really close with 2.02s
if you plan on a 2500 converter you really can go wrong especially if you use a smaller carb/throttle body till you add the charger.
just make sure you check the clearance between the piston and valves small fords tend to be real cloase.
are you using aftermarket pistons?
if stock what year are they?
watch out for the 85-86 flat tops its really close with 2.02s
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From: northern va
mine is a 71 block but remaned and 40 over it still has factory grade pistons. when i pulled the motor it only had 18k on it so i did not want to mess w/ the bottom end. i felt that the cam im running is about as high as i want w/ auto trans but its not crazy big by anymeans how small of cams have trouble? i know my pistons are flat and have 4 valve relifes in them
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you should buy the heads place a slice of bread or playdough on the piston bolt the heads on with no gasket and rotate the engine a few times you need some clerence there but the head gasket will make a few tho room so i would go with the heads there a good deal and fit into your future plans.
let a few others chime in before you pull the trigger im just one opinion you should get a few more and weigh the options.
you will aslo need some conversion washers or head bolts as all small ford aftermarket heads have the 351 head bolt size 5/16 i think compared to 1/2 on the 302
let a few others chime in before you pull the trigger im just one opinion you should get a few more and weigh the options.
you will aslo need some conversion washers or head bolts as all small ford aftermarket heads have the 351 head bolt size 5/16 i think compared to 1/2 on the 302