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I'm not sure .. I bought it from Clint32 on these forums.

I think it has an 8cm^2 exhaust housing

I've been advised that I should perhaps be going for cams that will generate torque rather than power as I'm going to need all the low down grunt I can get

Tuning costs?... give me another week to get another RB20 into my thing and ill see how i do with the baby TD06 properly tuned... if the cams arrive before the engine gets bolted in then it will all go in at once saving me the costs for another tune...if the cars is back together begfore i get the cams then ill be able to give you a before and after.

RS500: As Roy said, tuning costs. I thought if I just get the cams to start with then I can do the valve springs etc and get that side of things out of the way. But then again I guess tuning costs = dyno time so it's probably not too expensive the second time round to get a retune.

Joel: I dont think so. It's a T67 that he had in addition to his TO4E. I'm not sure if he put the T67 on or not though.

The cam selection for using hydraulic followers are all small lift, and won't require non-standard springs.

Cams for torque... where do you want the torque to be in the rev range? If low-end, use the standard ones. If you want more torque higher in the rev range use 264's or 272's - this would complement the turbo alot better than trying to compensate for lack of low rpm boost with standard cams. Although larger duration cams would probably assist low rpm torque as well, as they aren't aimed at reduced emissions al la std jobs.

Running an aftermarket exhaust manifold (re: a good, proven one, not a hack job) will give you a big gain in off-boost torque and driveability, as well as a throaty exhaust note.

Short version - get the largest you can get your hands on. 264 or 272 would be awesome!

You would only need to change the valvesprings to accomodate either:

a) higher revs

B) higher lift cams

Really you should be designing the engine to work together as a package, that will produce peak results within a specific rev range to suit your purposes.

The turbo, cams, gearing, head flow, manifolds can all be juggled to work well for a specific target - since you've already nomiated the rev range the engine will be in (by buying that turbo) you have to make the rest of the components fall into line. Mismatched components are a comprimise, they can work well together but it's not optimal.

Having said that, I'm sure even the standard cams would work with that turbo, so anything larger is a bonus.

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