What 340 camshaft?

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I like the Crower 267HDP split pattern or 260HDP. or any of the other grinds the other members recommended , all good !
 
Comp xe268
Is in my 340 runs good with some lope.
Comes on hard at 3500
I wish it made a little more bottom end power, but my car is a auto with 3.23's
And manifolds.
But I do get 16 mph ave...
Probably would be much peppy'er with your set up.
 
Charles, what camshaft do you recommend for the OP's 340. Thank You !
a6pack is great AAR T?A. carb 340 can and will take size stsrt at 750 780 even 800; that is where u will see most performance. on cams keep short duration 4 area lift as 440 430 . I have run in a 68 dart a 527 lift 300 duration wwith a eldo intake hooker headers. and came out my drive and had my kids tell me lft front wheel off street with 430 gears. o but get a big carb. w auto stall. converter. 4spd and in town 430 will get you 50 mph and fun. thank you!
 
How bout the 1968 340 4 speed purple shaft cam. :)

Personally, I'd throw the Comp XE268H in and call it a day.
 
How bout the 1968 340 4 speed purple shaft cam. :)

Personally, I'd throw the Comp XE268H in and call it a day.

Cause they never made it. THe 340 cam that's the purple shaft is the 69 and later auto cam. Oregon Cam Grinders has the 68 4 speed cam in their lineup. It's like 2* different but that's spot on, IMO. The 268 is a good choice.
 
Are you saying the 68 340 4 speed cam wasn't a Mopar Performance purple shaft cam ?
Not sure what you are saying.
 
Are you saying the 68 340 4 speed cam wasn't a Mopar Performance purple shaft cam ?
Not sure what you are saying.

Yes I am. The 68 340 camshaft was long before the purple shafts existed. It was simply a Chrysler 340 cam. It has never been reproduced. As a purple cam or any other. Oregon is the closest thing.
 
Gas mileage concerns?

I like that dang MP split duration grind. “761” 228/231-.450/.455 or something like that.

If you can’t find that cheap, that’s about the duration I’d be looking at. Stock /.02 heads, that falls right in there just fine.

The 450/455 cam is what I put in a recent 340.
Should be up and running in a month or so.
It was suggested to me by an old school Mopar buddy of mine.
Looking forward to seeing how it goes.

IMG_20160318_124606038.jpg
 
Factory production camshafts write-up:

View attachment 1715277490
Camshafts are like women, you throw that age old question out at the "Bench" and you will get 14 different answers. Everyone of us have our version of perfect. Tall short, skinny or hefty, Red head or brunette (no blonds) rich or poor. RRR first response is still a pretty darn good choice. As are many of the others. In the end it is your money and your car, every choice provided has merit. Build it and have a blast!
 
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