Thread: "THE" cam lift & duration comparison thread

Which all would make a difference as to the actual specs of the cams, not just advertised lift and duration which means nothing unless they are all measured the same. Bigger numbers sell more product, period. I haven't measured many of these cams personally so I can not begin to tell true specs of the cams. The cams I have actually measured were a long time ago and I couldn't even begin to tell you what they were.
Drew

yeah, these measurements are all per manufacturers specs, I will have to log that info too.. obviously makes a big difference.

thanks for putting up the specs now i now what cam to buy

Here is some more information about VET (20V) cams.
The SR20VET Cams
Mods III - Slapping in the SR20VET cams


OE SR20VET:
Low lobe INTAKE - .315" LIFT / 212º DUR - Low lobe EXHAUST -.445" LIFT / 244º DUR - OVERLAP - None
High lobe INTAKE - .433" LIFT / 248º DUR - High lobe EXHAUST -.445" LIFT / ---º DUR - OVERLAP - 13*

I also suggest we start keeping track of overlap... vqman if it's fine with you I can update the first post with the information that we currently have.

Found this on the old forum...

Source

Looks like some of the numbers were were wrong. Updating as per FSM spec.

New Addition

[B][U]Stock low port (94)[/B][/U]

INTAKE - .362" LIFT / 240º DUR. - EXHAUST - .362" LIFT / 240º DUR

Changes from

[B][U]Stock low port (95-up)[/U][/B]

INTAKE - .341" LIFT / 232º DUR. - EXHAUST - .362" LIFT / 240º DUR - OVERLAP - 16º



[B][U]USDM Roller Rocker SR20-[/U][/B]

INTAKE - .394" LIFT / 232º DUR - EXHAUST - .362" LIFT / 240º DUR

Change to

[B][U]Stock low port (95-up)[/U][/B]

INTAKE - .339" LIFT / 232º DUR. - EXHAUST - .362" LIFT / 240º DUR - OVERLAP - 16º

[B][U]USDM Roller Rocker SR20[/U][/B]

INTAKE - .370" LIFT / 232º DUR - EXHAUST - .346" LIFT / 240º DUR

Does anyone know what these cams are measured at? 0mm? .020" or .050"???

Cams were measured at .016"

can anyone tell what type of cams these are from these markings?

i was under the impression they were S3's when i bought
and installed them

JWT uses Nissan billet blanks so I think they would have a 53J head code stamped on them. I have read that the S3's should have "sport cam" stamped on them between one of the lobes. I think the S4's, from what I have read have "street cams" stamped on them. I don't own any, but did some reading and from recollection as well.

thanks, i ended up findibg a couple of threads about it on the "old" forum. Those markings were only on S3 and S4 cams for the first couple of batches... most of the cams they sold do not have these markings and the only way to find their authenticity is to measure, which is what i did... and they are in fact S3 cams...