6.4 challenger cam in 2011 ram

hemi_hawk said:

I have read the post that was a few post down about the 6.4 cam in the 5.7 ram engine, my question is, why wont the factor valve springs work ? and my guess is I have to get all new gaskets ?

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ericlee9386 said:

The 6.4 cam has alot more lift then the 5.7. The spri.g is only rated for i think right at .500 lift. The 6.4 cam also has a much increased rpm range. So a set of springs would help get the full potential from the cam.

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fasthemiram12 said:

The factory 6.4 Springs are taller and have a different install height than the 5.7's
the 5.7 is a 1.81 the 6.4 is 2.1 I believe

the 6.4 springs when installed from the factory is within .050 of coil bind on the exhaust anyway. the factory squeezes them very tight and there isnt much room to play with.

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hemi_hawk said:

all this **** is getting confusing....... is it even really worth it ? I mean doing a new cam swop is a big job.

I have no idea what springs, shims gaskets or any of that

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ericlee9386 said:

It can be worth it with all the supporting mods and a good tune. In the challenger the cam on a stock tune and longtube headers with no cats dynoed 9 hp 20 ft. Others with a tune claimed between 20 and 40 hp. It may not be as empressive as the comp cams but the avg person can afford it and not struggle to get it tuned. The 6.4 should run good o. A 93 or 91 tune until you can get it custom tuned.

As for springs i am using the Manley nextex spring p#221430 or 221431. You shouldnt need shims as the insfall height is 1.8xx. Head gaskets and bolts should be replaced just for.easy of mind.

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KLRpanda said:

What choices does comp cams have besides the one that cost out the ass?

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hemi_hawk said:

still have not really found what I am after here.. when I get the 6.4 cam do I get the 6.4 springs only or do I have to get spacers or ?? I don't really want to get shims

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