I've got a custom grind cam with the following numbers: 242/252 duration @ .050 and a lift of .525/.540 with 1.6rr according to the person that built my 355 short block and ordered the cam.

My question is, does the lift numbers seem low? Is there a way to find the numbers while the cam is in the block?

Thanks,

Jody J.

 

Interesting numbers. Don't custom cams come with cam cards? If not, won't your builder tell you why he ordered this particular grind? Just curious?

 

I'm sure it did, but he didn't give it to me. Plus we didn't end up in good terms LOL.

Thanks,

Jody J.

 

Perhaps your invoice indicates who made the cam and they can supply you with the card.

Anyway, you can always install 1.7s or 1.8s and bump up your lift if you believe it will improve on the performance.

Being cam dumb, I couldn't even guess.

 

you sure can find out the specs on it with it in the block. depending on how far assembled it is. just put a dial indicator on the edge of the lifter (that reads non hydrolic part) and turn the engine over find the lobe lift and then multiply it by your rocker arm ratio. as for the rest of it i'm lazy and dont feel like typing out how to degree a cam since theres a lot of good how to's out there on comp or cranes websites for example (i do recommend the .050 method though). hope that helps you out.

 

Thanks for the info WS6. I'll also look on Comp or Crans website on how to degree a cam to check the durations too.

Thanks again.

Jody J.

 

Those lift numbers migth be lift with a 1.5RR.
The exhaust lobe looks like a Comp 3151 lobe, which is 242@.050 with .540 lift with a 1.5.

Hmmm, that intake lobe I can't match up though.
If you were in a position to pull the cam out, the lobes should be marked on the back base circle of the cam.
Dave

 

Thanks Dave.

BTW, aren't you guys running a GP on Cam kits? What about custom grind cams, any special pricing on those? I want to get a new custom cam to take advantage of my motor combo.

Thanks,

Jody J.

 

Adding a true custom grind in the mix will set you back $50 on the kit.
In most cases, I can find lobes that suit your needs.
Feel free to pm me.