G
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·WEBCAM spec'd out the orig
WEBCAM spec'd out the original QV/3.2 cams and two performance grinds, one of which they recommend for the street and one for race hp that would probably lose some low end. In all cases (stock and modified), the intake and exhaust cam lift and profiles are the same. The stock numbers actually surprised me. They are close to the numbers in the Bluemel book which lists duration at 020 @ 244
***Also remember that one cannot compare 2v and 4v cam profiles - a little difference in a 4v goes a LONG way***
.................Stock.......Street......Race
total lift-----.306------.324------.348
@
.010---------296-------302-------310
.020---------247-------252-------260
.040---------226-------232-------240
.050---------220-------224------ 235
.100---------194-------200-------208
.150---------168-------174-------184
.200---------138-------146-------160
.300----------36--------64--------90
Stock Ramp is 53; all others 52 (don't know what this means yet).
Don't have a lot of experience, but can tell there is a lot more area under the curtain opening curve with the performance grinds.
Timing is a bit different issue which we can discuss.
Of course, they can mix and match whatever grind you want.
For my requirements for a street car keeping things amazingly simple and cost effective (i.e. carbs, stock rev range and valve springs), I'm not willing in a street car to lose a lot of low end. She feels that with the current carb dyno hp numbers on the 3.2 stock cams, the above street cam installation will put me over 300 hp, and close to 95-100 hp/liter which in a carburetted street use car keeping low end torque is phenomenal - on stock compression and pump gas! Paul Airey also relates that when he put in his P-6 cams, the sound got lower and meaner to boot. Woo hoo. Again, I'm in this for 'engine personality' and reliable fun as opposed to all out dyno numbers.
I have heard some guys (Capo, Kermit, et al) are running 260 qv durations. Kermit Morgan posted on a 260 car he did and said that while it was a screamer, it was difficult on the street.
More as the project develops.
WEBCAM spec'd out the original QV/3.2 cams and two performance grinds, one of which they recommend for the street and one for race hp that would probably lose some low end. In all cases (stock and modified), the intake and exhaust cam lift and profiles are the same. The stock numbers actually surprised me. They are close to the numbers in the Bluemel book which lists duration at 020 @ 244
***Also remember that one cannot compare 2v and 4v cam profiles - a little difference in a 4v goes a LONG way***
.................Stock.......Street......Race
total lift-----.306------.324------.348
@
.010---------296-------302-------310
.020---------247-------252-------260
.040---------226-------232-------240
.050---------220-------224------ 235
.100---------194-------200-------208
.150---------168-------174-------184
.200---------138-------146-------160
.300----------36--------64--------90
Stock Ramp is 53; all others 52 (don't know what this means yet).
Don't have a lot of experience, but can tell there is a lot more area under the curtain opening curve with the performance grinds.
Timing is a bit different issue which we can discuss.
Of course, they can mix and match whatever grind you want.
For my requirements for a street car keeping things amazingly simple and cost effective (i.e. carbs, stock rev range and valve springs), I'm not willing in a street car to lose a lot of low end. She feels that with the current carb dyno hp numbers on the 3.2 stock cams, the above street cam installation will put me over 300 hp, and close to 95-100 hp/liter which in a carburetted street use car keeping low end torque is phenomenal - on stock compression and pump gas! Paul Airey also relates that when he put in his P-6 cams, the sound got lower and meaner to boot. Woo hoo. Again, I'm in this for 'engine personality' and reliable fun as opposed to all out dyno numbers.
I have heard some guys (Capo, Kermit, et al) are running 260 qv durations. Kermit Morgan posted on a 260 car he did and said that while it was a screamer, it was difficult on the street.
More as the project develops.