Building my 72 340 and need some help

[gunmetal72]

I am still confused (does not take much) about what roller lifter I can use. It appears that no one sells a proper hydraulic roller lifter that will fit into the lifter bore and oil properly. Given the problem with the lifter bores in the block and from what I have read, the only ones that are available are solid rollers from Mike at MRL. If that truly is he case I might be smarter to stay with the flat top lifters? Does anyone know if there is a hydraulic roller lifter that will work? Has anyone used these? http://www.hughesengines.com/Index/p...j&partid=26114

 

[nm9stheham]

The link above does not work for me... but I assume you mean the PN 5321?

Here is that thread in which these were discussed along with this issue, with some solutions. That poster was using a moderate lift cam in the .540" valve lift range and having issues....just barely.
http://www.forabodiesonly.com/mopar/showthread.php?t=335882

Unfortunately, I'd expect this issue to be specific to each individual block as the amount of counterbore seems to widely vary. So it might be an issue with one black and not another with the same cam and lifters. At least Hughes gives dimensions, so if you have any way to take precise measurements of where the top of the lifter oil groove ends up relative to each lifter bore, then you could answer this directly for your block.

If you are going with a cam like #2 out of the Crane list, then the lower lift of .500" or less makes this lifter a likely solution.

 

[gunmetal72]

I called Hughes and they are going to send me a pair of lifters. Kevin from Hughes said the only way to know for sure is to try them and see. He said they have had "ok" luck with them but there has been a few cases where they did not work depending on the cam. He also said I would need to have custom push rods made for me. I did not know I ad to have them custom made?

 

[AJ/FormS]

I built a 360 very similar to this,in 98/99.
http://www.hughesengines.com/TechArticles/11360dynotestfeb2000.php

Extremely satisfying street engine. I added a few goodies.

It's got over 100,000miles/15years on it now and still going strong. With aluminum heads it has always run on 87E10.

The nice thing about the extra stroke is that you can run a little more cam without sacrificing Dcr. The nice thing about that is you can run a little less gear out back.The nice thing about that is more miles per dollar spent.
Running 87 has saved me over 4 times the cost of those aluminum heads over the 100,000 miles. The savings has paid for several tear-down inspections, and if I drive it a few more miles I think I will have saved enough for a complete replacement engine.