Was the 300 I6 ever offered with a solid lifter cam?

What was the application for it? And where would one get new/re-man rockers for it?

If this project gets off the ground it'll be done with a custom grind crower cam, ground to pull stumps.

Sam

 

The place to start looking for solid lifters is with Crower since that's the cam you are using.

 

The cam and lifter is no problem, Crower can make a custom grind, but it's the rockers I'm concerned about, all I can find are the regular stamped steel ones with no adjusters for valve lash.

Sam

 

300s were always hydraulic. Why would you want solids on a low rev motor like the 300? Even if you are going to spin it to 6000 rpms, the hydraulics will still work if you can keep the rods in it and get the right springs.

Crower shows a couple solid cams with a 7000 rpm peak power level, 7500 redline, should you have a small fortune to put into the motor.

They sell rockers also, but I couldn't find 240/300 specific items. Since others here have mention using Chevy rockers I'm sure Crower would know an interchange that would work.

Crower master catalog for high performance engine parts

 

It's just a personal preference, a hydraulic would work just fine, but i prefer a solid.

Sam

 

Are you building a performance engine, or just one you will have to constantly fiddle with? There is no reason to prefer solids in a standard or even mild engine, especially when you will have to go to the aftermarket if not a custom application for adjustable rockers. The path most traveled is the way to go here.

 

For some reason I thought there were factory solid lifter 300's, I guess not though. I like solid lifters, but not enough to require custom rockers, custom parts like that are always a pain in the neck.

Sam

 

The stock stamped rockers are adjustable just not real sturdy. There are roller tipped and full roller rockers for the 300 if you don't mind dropping a little extra coin.

 

Roller rockers are nice, I wouldn't mind having a set.

A roller cam would be nice too, but from what I've read I'd have to modify some 429/460 lifters and have a custom cam cut? Might be a bit out of my price range.

If I do wind up building this motor it'll be a truck engine for sure, I would shoot for 350-400 ft lbs at a nice low RPM. A Holley 570, Offy DP, HD exhaust manifold. Looking for something more reliable than the 390 I've got now, and at least comparable on power.

Sam

 

Crower shows a solid roller cam for the 300. Contact them about lifters.

 

I can't seem to find it listed on the website, the only ones I can find are all flat tappet.

Sam

 

Bottom of page 75, "Custom ground roller".

http://www.crower.com/media/pdf/2008b/67-97.pdf


The link lands you at page 67, so you have to scroll to 75.

 

Schneider Cams has a nice selection of roller grinds and they claim to do custom solid rollers as well.

Schneider Racing Cams - Ford "Truck Six"

 

Very interesting! Looks like there a few sources out there, I'll have to see what I can dig up for lifters. On the fordsix website I read about someone using lifters from a 429/460, it required some modifications to the block and link bars.

Sam

 

Forget what I said about lifters, I just checked Crower's website and top of the lit is Crower's new solid roller lifters for the 300!

Severe-Duty Mechanical Roller Lifters

Not cheap for sure, but as far as I know they're the only one making them.

Sam