BP Aftermarket Cam Comparison (Faq?)

4-Cyl. Technical/Performance Discussions
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Shady469
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BP Aftermarket Cam Comparison (Faq?)

Post by Shady469 »

In my quest to find suitable N/A cams for the BP i got sick of cross references between sites over and over so i decided to compile what i could find for easy comparison. I think looking at the Toda specs, as they seem to be one of the front runners in the N/A realm, and reading the piece at the bottom, one should be able to find the right cam for their needs.
I couldn't find the specs for the mazdaspeed ones, if anyone has them please post. If someone were inclined they could go into detail about which profiles are better for N/A and F/I and then maybe this could go in the FAQ?
Manufacturer
Lift___Duration___Duration at .050

Integral Cams
9.40mm___254*
9.52mm___260*
9.52mm___266*

WebCams
8.94mm___225*___205*

Toda (Base Dia. 36mm)
9.0mm___256*
9.0mm___264*
9.0mm___272*
9.0mm___288*
9.0mm___304*
Toda (Base Dia. 33mm)
10.0mm___264*
10.0mm___272*
10.0mm___288*
10.0mm___304*

MazdaSpeed
?___?

Stock EGT
8.10mm/8.58mm___(at .010") ?/232*___196*/202*

http://members.aol.com/solomiata/cams.html <--- Has factory specs and words of advice:
“... anything more than 9.5mm lift and you'll also have to make a clearence cut at the lifter bosses. The billets don't support that much cam either. My webcam 515's are 270 duration, .370 lift and 48 degrees overlap. I had to get the basecircle cut .035" just so the profile would fit on the billet blank, good thing too with the tight lifter boss clearance.
The overlap and duration of the 515's adds great peak hp but kills torque. I would need about 13:1 to make them work perfectly (tough to build cylinder pressure when the valves are open all the time). Most people would hate them for the street. Even when adjusting the cam sprockets as tight as possible my cams still give up a little torque potential.
Something along the lines of a 262 duration , 9mm lift and probably 25 degrees overlap would be about the max I would want to use for the street.”
B6T powered MX-3 - sold
Stage 3ish 03 WRX - sold
03 S2000 - current/ for sale
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