Need to choose a cam

[Orange67Dart]

Hello, and Happy New Year. As some of you know, I am having my 340 rebuilt due to a crank failure at the thrust bearing. Heres what I know about the engine. I have X heads going back on it. The previous cam was a purpleshaft and had a .506 lift. The cam profile showed over.020 wear on more than one lobe. I'm having a 372 stroker kit installed. The bore is .040 over. I'm trying to hold the compression to around 10.5:1. CRT 904 trans. with reverse manual Hurst. 3800 stall converter. (most likely will be changed) Should the new cam have that much lift with the stroker kit? I'm looking to make torque with this build.
I'm not going to race it. (unless they insist.) :burnout:

 

[Brian Hafliger]

Rockers?
intake?
carb?
headers?
gear?
tire?
any porting on the heads?
Brian

 

[Orange67Dart]

stamped rockers (considering rollers)
edelbrock performer intake
holley 750
3.91 gears
mild porting
Hooker headers

I don't know a whole lot about this as you can pretty much see. I am mainly looking for opinions that make sense. I've never had an engine built before and want to have it run with a noticeable lope at idle. The last cam practically shook the door handles off.

 

[moparlover]

you should definely go with an adjustable rocker set. i got one out of a junkyard back 20 years ago for my '68 dart. it came off an old smashed up cuda with a 273 in it. then you can run a solid lifter cam. hydraulic cams start floating the valves or pumping up / locking at full height over 5k rpms which is not a good thing.
if money is not too tight you can get a set of the hughes engines rocker set for $497 which has great oiling. the stamped factory rockers + hydralic cams i would say is only if it is a budget build. a solid lifter camshaft is a stronger build, but just means you need to adjust the valves every 10k miles or so.

also if they have the engine apart make sure you get a high volume oil pump. i had one and my 340 never had a problem. i also had a milodon low prof 6quart oil pan. this way, your engine never experiences oil starvation. better oiling will mean less wear on the main rod and cam bearing surfaces. i'm assuming they will put a quality oil pump on with the stroker kit.

 

[Brian Hafliger]

stamped rockers (considering rollers)
edelbrock performer intake
holley 750
3.91 gears
mild porting
Hooker headers

I don't know a whole lot about this as you can pretty much see. I am mainly looking for opinions that make sense. I've never had an engine built before and want to have it run with a noticeable lope at idle. The last cam practically shook the door handles off.

If you go with 1.6 rockers, I'd use this: Comp xe 274 cam on a 108lca. Install it straight up, no or very little advance.
Brian

 

[rumblefish360]

If you go with 1.6 rockers, I'd use this: Comp xe 274 cam on a 108lca. Install it straight up, no or very little advance.
Brian

I like this. Go for it. The 1.6 rockers cost no different.

 

[Beatnik]

Gerard - The cam that was in the car was the Mopar Purple shaft .509 hydraulic. (old single pattern cam). I remember it didnt come in until past 3000rpm! But when it did it pulled good....that being said, I wouldnt use it again, or get another. If I were you and you want a nice lopey idle but great street manners and lots of torque and good cyl pressure go w/ Hughes Engines "Whiplash" cam. Infact I had one on the shelf waiting to go in before I sold the Dart to Dan. I've since sold that cam but I'm about to pick another up for the Duster.

You can check it out here. http://www.hughesengines.com/Index/index.php

They've got good roller rockers if you wanna go that route, or stick w/ the stock stuff for the time being. Give Hughes a call and they'll set you up. You wont be disappointed! That cam is sweet for a street cruiser!

That being said, a Comp XE grind is a good choice too as mentioned above!

Also, are you sure your going to be a static 10:1 comp? I'd shoot for more 9 to 9.5:1....run premium pump gas no problem, use the Hughes cam and w/ the heads being worked up nicely you'd be very happy I think

 

[moturbopar]

I think this might work for you and its a good price.
http://www.summitracing.com/parts/HRS-CL710581-10/

 

[Orange67Dart]

I picked out a cam with my builder last week, but now we may dial it back a notch due to a change in stroker kits. I cant remember the exact specs, but I think it was a 284 dur 110 deg solid cam from Comp.

 

[Abodybomber]

A solid should bump the torque curve,compared to the old grind.A little work to adjust,should work well with a 372.