Thread: VE cams in DE?

soooooo, 91 intake i COULD pop in my RR sr20de motor (2000 g20) and work ? PROPERLY ?
would that b benificial IF it were to work ????
(i know 91 intake cam in other non rr motors gives like a 5hp bump)

No need, seen it in person both ways, drove the car, known both of the locals who have done it. People can believe it or not, won't hurt my feelings.

Pretty sure the stock RR cams are bigger than the highport. Not positive but you can search around to find that info.

wow, this just breaks open the whole debate regarding rr cams in non rr heads and vice versa...


more info on what you have seen please..

so you have seen someone put in non rr cams into a rr head?

does everything line up correctly? any loping or other strange effects?

Nothing needed to be modified. BC stage 2 and 3 both in rr head, idles just like it would in a non rr motor.

so just to clarify, the rr cams and non rr cams ARE completly interchangeable?

so why does JWT advertise rr cams as s3r's?


tbh i never understood the whole rr/non rr cams concept. If they both have the same lift etc. then why not?

The cam journals are spaced the same in RR and non RR motors, so any DE cam will bolt in.

As someone said above, I think (not certain) the stock cams in the RR are larger than their non RR counterparts. Assuming this is true, you could bolt in S4s, BCs, or whatever; but they may not have the same gains as in the non RR motors. I'm also think (again not certain) that JWT made the S3Rs as big as they felt comfortable going, using the stock RR valvetrain. So if you found some larger non RR cams and put them in, you could be risking piston/valve contact.

You also have to consider that the profile (not just lift) of the cam is of some importance. It's kind of like the GTIR mechanical lifter cams in a regular DE. You can bolt in GTIR cams- it will work, and it will make more power, but it is reported to accelerate valvetrain wear.

I'm not an expert by any means, and I'm not saying these aren't options to be explored, just throwing some caution out there for consideration. Just because they fit and run, doesn't necessarily mean they are the best option. I know Snickers has said in the past that he could make some custom cams for RR motors. From my understanding, he is pretty knowledgeable with them. Perhaps he could provide a little more insight.

actually iirc.. the VE cam theoretically could work...however i think the VE and any DE rocker arms are designed different, so in theory you would be driving on the high lift lobes, and at worst case scenario the low lift lobes would be hitting the tops of the valves if not the arms of the rockers.....standard DE cam has one lobe to operate 2 valves while the VE has 3 lobes...2 small for the low one large for the high

This is correct, they adjusted the intake cam on the 00+ and therefore no need to upgrade that cam.

When i tried this a few years back i noticed the RR cams are bigger ,
altho the cam journals are spaced equaly i saw no gain in doing this swap . Not to mention that constant high RPM's will result in bent and damaged valves and premature wear.

Please post the info you have on how RR cams benefit a old school DE for cheap HP. i like to see the gains on a dyno sheet if avaliable .