All
I am running a comp cams hydraulic roller in my 260.
If I remember correct I used 1.67 intake valves when I rebuilt the heads.
Screw in studs, roller rockers, etc...
The cam specs are intake.448
Exhaust .443
Duration at .006 tappet lift
Intake 260
Exhaust 265
Valve timing intake open: 0 btdc close 31 aboc
Exhaust open 38 bbdc 2 atdc
I have stock Pistons. Heads were milled slightly when redone.
I had to retard the cam a bit to get the clearance I wanted.
Runs great. F4b. 1848, etc.
Sent from my iPhone
> On Jun 19, 2015, at 11:58 AM, Ron Fraser via Tigers <tigers@autox.team.net>
> wrote:
>
> DW
>
> I hope sometime in the future you write the Long Story with part numbers and
> Dyno numbers.
>
> Ron Fraser
>
> -----Original Message-----
> From: Tigers [mailto:tigers-bounces@autox.team.net] On Behalf Of spmdr---
> via Tigers
> Sent: Friday, June 19, 2015 11:34 AM
> To: tigers@autox.team.net
> Subject: [Tigers] 260 for the 21 century
>
>
> I JUST finished a "260" rebuild.
>
> ...I started on the story, but it's not done yet.
>
> Short story:
>
> -Roller cam.
> -Roller rockers
> -stock (new) pistons, no valve cuts.
> -stroked crank.
> -new rods
> -9.6 compression.
> -stock iron heads, with some help.
> -early LAT / CAT headers.
> -air gap intake.
>
> It runs good, We'll see what it does at the CAT Dyno day, Hopefully...
>
> The owner is moving so the Dyno day is tentative.
>
> DW
>
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