Andrews 2X cams, what lift and duration?

Did a search, the only info i came up with did not list the cams by 1X, 2X etc. Just wondering what they spec at. Bike is a 1979 KZ650 SR. Running a Mac megaphone exhaust, KZ900 carbs and pod filters, jetted accordingly.

2006hhr wrote:

Did a search, the only info i came up with did not list the cams by 1X, 2X etc. Just wondering what they spec at. Bike is a 1979 KZ650 SR. Running a Mac megaphone exhaust, KZ900 carbs and pod filters, jetted accordingly.

Here ya go

Chart is for Kz900 - 1000

You want their #25 Grind for a 650. That's their version of a 2x for those motors. .360" lift & 260 Dur. @.030" checking lift. MUST CHECK PISTON TO VALVE CLEARANCE WITH THAT GRIND.

The #20 Grind is .350 /252 If using stock pistons would be a safer choice for that motor.

2006hhr wrote:

Did a search, the only info i came up with did not list the cams by 1X, 2X etc. Just wondering what they spec at. Bike is a 1979 KZ650 SR. Running a Mac megaphone exhaust, KZ900 carbs and pod filters, jetted accordingly.

Andrews had numbers 10,15,20,25,30,35 and 40.
I have the spec. sheet on all of them, let me know what no.

Thanks guys, still bidding, just wondering how much work it would need to install them.

2006hhr wrote:

Thanks guys, still bidding, just wondering how much work it would need to install them.

If they're 2x, STOP BIDDING...they don't fit your bike.

Letting it ride out. Seller claims they are KZ 650 cams, box says .300 lift intake and .335 exhaust sounds kind of strange as stock KZ 650 intake is .308 according to Megacycle site. May be .380 intake .335 exhaust? Nebr_rex, could you email the specs you have to me at cruzerjd@yahoo.com ?

and me as well since i have a set in my 650 also.
kawsakiman@rochester.rr.com

you used to be able to buy piston kits that came with those 2x cams if i remember right,without the head being cleaned up a little your still only going to move so much airthough

Andrews 650 / 750 Cams [duration and timing @.030"]

#10 - 10/46 236* .330 - Bolt in Stock Buckets & springs.

#15 - 12/52 244* .340 - For 750 Motors

#20 - 16/56 252* .350 - Stock Buckets & Springs Torque from 3000 up

#25 - 20/60 260* .360 - Stock Springs OK - Piston Clearance needs checking

#30 - 25/35 270* .370 - Big CC street motors, aftermarket buckets & springs Power from 3000 up.

#35 - 27/67 274* .380 - 800cc & up Power from 5000 up

#40 - 21/61 262* .392 - Drag and Big Street Motors Springs and Buckets Required. Broad torque to 11000.

After the great advice from everyone, i let the cams go. Seller could not confirm lift and duration beyond what the box had written on it. Having been burnt in the past, paying top dollar for stock cams packaged in aftermarket packaging (Webcam cams in that case) i let someone else have the headaches. I am installing a set of 750 cams though, now if i could just find a GPz 750 intake cam....