Paging Mr.UD Harold [Archive] - Chevelle Tech

: Paging Mr.UD Harold


blown70
Sep 25th, 05, 1:19 PM
I need an opinion an this solid flat tappet cam for my blower motor.:

___________________int._____exh.
dur@.050___________262_____273
adv dur_____________325_____337
lobe spread______________116
lash_______________.020_____.020
valve lift___________.581_____.620
cam lift____________.342_____.365
timing_________BTC___ABC___BBC___ATC
_______________17____65____75_____18

Is this a good pick?(Ihope so,I already picked it)Any and ALL opinions are appreciated!

UDHarold
Sep 25th, 05, 6:51 PM
Blown70,

It looks llike somebody's version of the ZL-1 cam, so it should work OK, wide LSA to avoid blowing all your fuel out the exhaust and to give a fairly wide torque curve. Don't believe those big seat duration numbers, I'd call it in the low 300s/310s. It should be very reliable and easy on valve train, and should work just fine with 6 to 12 lbs of boost.
One I've made for 25 years is my 296/304 at .020, 263/271 at .050, .630"/.630" gross valve lift, and whatever LSA you want. This one will go 100,000 miles on the street, if the rest of the parts, ie--crank, rods, and pistons, hold up.....

UDHarold