Question about...

[rr]

Arrgg, forgot that CompCams doesn't list timing @ 50thou lift. Oh-well.
Anyway, here is the timing from the Isky cam, hydraulic flat tappet:

280 H.L Hyd

@.007 lifter rise:
            Intake        exhaust
open     29 btdc    65 bbdc
close    71 abdc    35 atdc

@.050 lifter rise:
open    4 btdc    40bbdc
close    40 abdc    4 atdc

.308 cam lift I&E
.465 valve lift I&E

224 deg duration
108 LSA
111 deg Intake CL

BobR.

timsiford at hushmail.com wrote:

> Bob,
>
> I am running a CompCams Xtreme hydraulic roller.  I pulled the following
> specs off of Comps Site.  HOWEVER, I had this cam custom ground on a 112LSA
> (before comp offered that as a standard grind) and I am running the cam
> with 1.6 rollers as compared to the 1.5 ratings.  The specs below are for
> the 110 LSA version.  They didn't have the specs on the 112 version up yet
> ...
>
> PART # 08-422-8
> GRIND NUMBER: CS XR270HR-10
> ENGINE: CHEVY SM BLK 305-350
>                          INTAKE   EXHAUST
> VALVE ADJUSTMENT  HYD      HYD
> GROSS VALVE LIFT   .495     .502
> .006  TAPPET LIFT  270      276
> VALVE TIMING     OPEN     CLOSE
> AT  .006 INT     29 BTDC  61 ABDC
>          EXH     72 BBDC  24 ATDC
>
> THESE SPECS ARE FOR CAM INSTALLED
> AT  106  INTAKE CENTER LINE
>                           INTAKE  EXHAUST
> DURATION AT .050    218      224
> LOBE LIFT         .3300    .3350
> LOBE SEPARATION     110
>
> Tim
>
> At Thu, 16 Nov 2000 11:07:02 -500, rrauscher at nni.com wrote:
>

<snip>


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