Practical truck cams

[fatguyzinc]

short duration, hi lift, short LC. anything over 110 is a crutch on the LC, to compensate for too much duration.
comp cams grinds on a 110, the isky is a 108 and commonly 20-30hp over the same size comp for any given
size. i dont own stock in isky, i aint got an isky to sell you--just telling you what works REALLY good for me and
tons of more than satisfied customers.

ive also used lunati with good success. every comp cam ive tried has gotten swapped within a few months as
they are usually disappointing.

[SuperBuickGuy]

short duration, hi lift, short LC. anything over 110 is a crutch on the LC, to compensate for too much duration.
comp cams grinds on a 110, the isky is a 108 and commonly 20-30hp over the same size comp for any given
size. i dont own stock in isky, i aint got an isky to sell you--just telling you what works REALLY good for me and
tons of more than satisfied customers.

ive also used lunati with good success. every comp cam ive tried has gotten swapped within a few months as
they are usually disappointing.

on an 8.5:1 (optimistically speaking) motor? the motor needs more compression, bleeding it off with 110 LC would kill it.... ask me how I know

[BBR]

234/244 at 50 with low compression seems like a little much.

[Eagle Kammback]

I know the base well, it's where my nephew worked when he was in.... trust me, though, not knowing him is a good thing - he didn't leave under friendly terms (or from me for that matter).

That said, I'd make you a heck of a deal on a set... though last time I checked the street price for new was less then $600. If you bandaid it until you get here, it'd take a day to do a top end. Point is it runs now. Sure it'll make a ticking sound but keep the rocker adjusted enough so the pushrod can't escape (treat that hole like a solid cam) and drive the tires of it until the day comes to make the changes - then you can do something that is economical, powerful, and reliable. Be a hoot to drive, too. Even with exhaust, I've done bunches of those swaps and it take 1, easy day.

The one thing I would do is a Chinese HEI - it's amazing how much power you get back with good ignition.

I think I'll have to take you up on that offer!
i actually already installed an HEI a couple of weeks ago, doesn't feel much better than the Pertronix electronic kit I put in when I bought her, but it's from DUI, so it should be good for a long while.
Where in WA are ya? I'm gonna be around Bremerton

[silver_bullet]

BTW Eagle... Thanks for your service! Did my time on the surface, but, out of our first 5.5 years of marriage, we had less than 2 years total time together.... I salute you sir!

[fatguyzinc]

on an 8.5:1 (optimistically speaking) motor? the motor needs more compression, bleeding it off with 110 LC would kill it.... ask me how I know

if thats really what hes got then yes he needs small chamber heads FAR more than a cam....

[rightpedal]

short duration, hi lift, short LC. anything over 110 is a crutch on the LC, to compensate for too much duration.
comp cams grinds on a 110, the isky is a 108 and commonly 20-30hp over the same size comp for any given
size. i dont own stock in isky, i aint got an isky to sell you--just telling you what works REALLY good for me and
tons of more than satisfied customers.
ive also used lunati with good success. every comp cam ive tried has gotten swapped within a few months as
they are usually disappointing.

Summit offers a 450/450 with a 106 overlap.... but my thinking was building for the future. Are we really calling a 460 cam hi lift?

[cstmwgn]

... Are we really calling a 460 cam hi lift?

Yes - when we are talking LOBE lift!

[RockJustRock]

I don't mean to sound dumb, but are we sure all these cams are O.K. with stock springs?

[SuperBuickGuy]

I think I'll have to take you up on that offer!
i actually already installed an HEI a couple of weeks ago, doesn't feel much better than the Pertronix electronic kit I put in when I bought her, but it's from DUI, so it should be good for a long while.
Where in WA are ya? I'm gonna be around Bremerton

other side of the sound - Woodinville - quick ferry ride across the water....

[fatguyzinc]

I don't mean to sound dumb, but are we sure all these cams are O.K. with stock springs?

of course not. any cam even a mild one should have all the correct "supporting actors" installed along with it.
this includes (but is not limited to) lifters, springs, timing set, etc....

[RockJustRock]

of course not. any cam even a mild one should have all the correct "supporting actors" installed along with it.
this includes (but is not limited to) lifters, springs, timing set, etc....

It's just the OP didn't sound like changing springs was in the plan. Shame to get that BIG cam and have stock springs turn to noodles. Changing springs is such a chore, but nothing compared to the occaisional dropped valve.

[AndyB]

Do it right once, or do it again.

I'd probably just nurse it on the trip and watch oil levels closely. Once you can throw the right parts at it and get everything working together, it'd be no shock at all to double the power of the thing, and very likely gain a big wad of useful torque to boot.

[65RHDEER]

How do you know you have a "sticky lifter" how was that diagnosed?

What motor is it and what year truck, maybe we can fix that lifter.

Have you tried something like this

https://www.nulon.com.au/products/en...ee-and-tune-up


Project Farm on Youtube tests all this type of stuff, he was impressed with Restore.

[fatguyzinc]

It's just the OP didn't sound like changing springs was in the plan. Shame to get that BIG cam and have stock springs turn to noodles. Changing springs is such a chore, but nothing compared to the occaisional dropped valve.

even the stock springs are most likely noodl-ish at this point. changing springs not that bad
even in car---50ft of 3/8 nylon rope in the plug hole, rotate by hand in firing order to push rope against valves,
on head 'leverage' type compresser, takes all of a couple hours maybe.

and ANY upgrade should always include all the supporting actors--i wouldnt change cams without
changing springs anymore than id put back the stock timing chain. do it once, do it right.