camshaft upgrade

[warhammer92]

I'm sure this topic has been discussed already but I'm upgrading my cam to a Hamilton 188/208.what following upgrades do I need or should do.I have 60# springs.I was thinking push rods and tappets.

Current setup up is 64mm turbo non waste gated, 5x16 injectors,m3 pin,4" exhaust, twin ram intake, adjusted pump, marine bowl pistons, head studs, power stroke I/c, and a built a518.

Hoping for 800 torque

[warhammer92]

And soon to have rccummins to flow hone another set of injectors and his lpplp

[RCCUMMINS89]

I'd look into the Hamilton 188/220............that's what BC's running.

It seems to be the cat's meow from what those who run it seem to say.

[warhammer92]

The only problem is idk about piston to valve clearance.my head and block got decked so there might be an issue.and idk if the gasket I have is thicker than stock.I have a MLS head gasket from cometic

[RCCUMMINS89]

A local company put together an engine at 19.0 to 1 compression........with that cam. It can be done..........

Zach should know what'll work, you can also get offset keys to help with valve clearances.

[warhammer92]

OK well I guess I'm goin with the 220 then.would it wise to get wider tappets and stronger pushrods

[RCCUMMINS89]

Get 24 valve tappets........as far as pushrods, I'm not sold yet.

But talk with Zach and see if he thinks you'll have the room, you may not. I think you will, but I'm not there to know.

[warhammer92]

Well I'm hitting 65lbs of boost and not sure if everything is gonna hold.I didn't expect that high of boost.

[RCCUMMINS89]

Holy crap........... what's your turbo specs?

12mm ve still?

[warhammer92]

64/72/14. It was custom built buy a family friend.its ball bearing and has 10mm shaft with titanium impellers and np waste gate

[warhammer92]

12mm ve still there.just did some internal mods.my uncle and dad are geniuses with these.both are old school truckers.but my uncle is a machinist and builds race cars now.I had alpt of help

[RCCUMMINS89]

Care to share what some of the internal mods were?

[RCCUMMINS89]

65# of boost with proper tuning (timing)............with a 64mm turbo.............you are WAY passed your 800tq goal.

[Tacoclaw]

Personally, I'd check with Zach and see if he thinks it's worth the hassle to go with the 220 over the 208, I can't imagine the gains would be that significant in terms of the possible headaches you could encounter. I never checked my PtV but I had my valves recessed in the head when I had it worked just to be safe.


If it's not a big deal for you to change your clearances go for the 220, if you've already bought your HG and have the head set up I'd play it safe with the 208.

JMHO of course.

[warhammer92]

We machined the delivery valves, machined the rack for more travel and did something to the timing piston.then had the pump benched.
My gets only get to 1400 at full throttle.
Pump flowed 300cc idk if that's a lot for this pump