if they are the same sizes, would the Jun cams make the same power as the HKS cams? they are half the price?

-shahul

plus can someone please tell me the major differances on the 264 vs 272?

 

272 will give you a rougher idle but a little more power up top

 

They are the same only in duration, which is a measure in degrees (out of 360) during which they act upon the valve. The actual total valve lift, where they start to lift the valve in relation to the crankshaft rotation (advance), and how quickly they raise/lower the valve during that time are likely very very different. All of these factors of a cam profile have a major effect on the actual power curve produced by the cam.

Cam grinding is a much a function of art as science... so you normally pay for the ones that have the right stuff, compared to WAG ones.

 

what are the stock cam specs and what are the specs on these other 2 cams?

 

so the 264 should be fine unless I go that high? and thanks 2cool, always a pleasure !

-shahul

 

Stock cam specs are as follows:

Duration: intake 260 exhaust 256 Lift: intake 10.00 exhaust 10.00 center angle: intake 109 exhaust 110

HKS cam specs:

Duration: intake 264 exhaust 272 Lift: 10.3 both center angle: 105 both

Duration: intake 264 exhaust 272 Lift: 9.8 both center angle: 111 both

 

..."ramp rate" is a common old school term... or the "art" of the matter...

 

Claudius check out Tomei also bro. They are using a 10.70 and 11.50 lift plus they have a ECU matched with their cams.

 

JUN camshafts
ANGLE LIFT
66 (264) 10.5 Racing valve spring required.
68 (272) 10.8 Racing valve spring required

 

so the exhaust is gonna sound alil more lopey?? cool.
What are the #s 10.3 both center angle?? im familiar with cams just never seen that # on my stangs cam specs

 

I was looking through Takakaira and it appears that HKS makes two different version of each of the 264 and 272 intake and exhaust cams.

Duration......Lift
264 in..........10.3
264 ex..........9.8
272 in..........10.3
272 ex..........9.8

264 in..........10.8
264 ex.........10.2
272 in..........10.8
272 ex.........10.2


Can anyone confirm this?

 

BTW, you can see for yourself at this link:

http://www.takakaira.com/performance...p?index=engine

 

Your right I read my HKS catalog wrong. Here are the correct cam specs:

Intake Cams:

264 duration 10.3 lift angle 110 HKS part # 22002-AM001

272 duration 10.8 lift angle 110 HKS part # 22002-AM003

Exhaust Cams:

264 duration 10.2 lift angle 110 HKS part # 22002-AM002

272 duration 10.2 lift angle 110 HKS part # 22002-AM004

Sorry for the mixup. These are the cams listed for our model EVO others are also made but for earlier models (2202) part #'s.

 

my shops swear by HKS cams.... hmmm..

-shahul