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Cam selection

Started by mjb765, November 08, 2017, 03:56:37 PM

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mjb765

Stock 383 with an edelbrock manifold and carb. Still have stock exhaust manifolds. No power brakes, 4 speed and 3.55's in the rear. Called Hughes for a cam choice and they suggested this

http://www.hughesengines.com/Index/products.php?browse=category&level0=RC0gQmlnIEJsb2NrIChMb3cgRGVjayk=&level1=Q2Ftc2hhZnQ=&partid=30255

Want a good streetable cam to just wake up the motor...don't need to balance a glass on the air cleaner, but it needs to idle in traffic if needed. Looking for thoughts on what they suggested.

Thanks

Cuda Cody

I like Mr. Six Pack cams.  He does a great job of balancing a good running / idling cam with some good performance.    :alan2cents:

Chryco Psycho

I have had great success with Lunati voodoo series cams
  702 might be what you are looking for .
Hughes can be difficult to deal with


mjb765

Quote from: Chryco Psycho on November 08, 2017, 07:50:26 PM
I have had great success with Lunati voodoo series cams
  702 might be what you are looking for .
Hughes can be difficult to deal with


Have a question since I don't have it apart yet...do I have a 1 bolt or a 3 bolt cam?

Chryco Psycho

I always order a 3 bolt cam & a new chain

mjb765

Quote from: Chryco Psycho on November 09, 2017, 03:51:43 AM
I always order a 3 bolt cam & a new chain

A new chain and new lifters are a no brainer.....just wondering about the number of bolts on the stock cam

Shane Kelley

If it's stock it will more than likely be a 1 bolt. I agree with CP on using a 3 bolt set up.  Since your ordering a cam,  chain and gear set you can do whatever you want.


Car-nutt

I agree with Cody, I have two cams from Mr. Six Pack and very happy with the results.

Flatdad

I think the cam Hughes suggested would work great for your combo based on the specs, BUT there is a cheaper alternative.

SUM-K6401 cam and lifter kit is VERY close to the Hughe's cam specs. Except, it comes with lifters, its U.S. made, its $47 cheaper, and shipping is FREE. (I've used this cam myself.)

The intake closing ABDC isn't listed on Summit's site, but from my cam card it says 41 degrees (the Hughes is 40 degrees). So, it makes good dynamic compression in medium and low compression iron headed big blocks. If your 383 is truly stock, you might find that 9.5:1 compression rating is actually 9.0:1 or less when measured, which is right in the sweet spot for the Hughes cam and Summit cam.

http://www.wallaceracing.com/dynamic-cr.php
About 8:1 dynamic compression is considered safe for iron heads, or so I've read.

Just my two cents, based on my limited experience, the folks that posted before me are a wealth of knowledge. Good Luck!

Shane Kelley

I have found that the 383's deck height is all over the place which will dramatically effect compression. That's one of the main reasons some 383's are screamers and some are just flat out pigs. You can usually track it right down to the compression issue and if you put the wrong cam in a low compression 383 and you will not be happy.  :alan2cents:

Chryco Psycho

Quote from: Shane Kelley on November 09, 2017, 05:37:26 AM
If it's stock it will more than likely be a 1 bolt. I agree with CP on using a 3 bolt set up.  Since your ordering a cam,  chain and gear set you can do whatever you want.

I agree stock 383 would likely be a 1 bolt cam
I have seen many cams with similar specs but they run completely different
From a lot of personal experience I can tell you the Lunatis make power & respond well


HP_Cuda


I loved the part where it says:

Vacuum = medium

:haha: :haha:
1970 Cuda Yellow 440 4 speed (Sold)
1970 Cuda clone 440 4 speed FJ5
1975 Dodge Power Wagon W200

mjb765

Quote from: Chryco Psycho on November 09, 2017, 08:56:29 AM
Quote from: Shane Kelley on November 09, 2017, 05:37:26 AM
If it's stock it will more than likely be a 1 bolt. I agree with CP on using a 3 bolt set up.  Since your ordering a cam,  chain and gear set you can do whatever you want.

I agree stock 383 would likely be a 1 bolt cam
I have seen many cams with similar specs but they run completely different
From a lot of personal experience I can tell you the Lunatis make power & respond well

I'm guessing you mean this one....

http://www.lunatipower.com/CamSpecCard.aspx?partNumber=33702&t=d



Chryco Psycho

I would like to know more about your combo before recommending a specific cam such as gear ratio in the diff , od trans or not , you want to be into the powerband @ highway cruising speed
either of these should work well as you have the 4 spd & std brakes so comnverter stall & manifold vacuum are less of a concern
https://www.summitracing.com/int/parts/lun-10230702lk/overview/make/dodge
or
https://www.summitracing.com/int/parts/lun-10230703lk/overview/make/dodge

mjb765

Quote from: Chryco Psycho on November 09, 2017, 10:41:09 AM
I would like to know more about your combo before recommending a specific cam such as gear ratio in the diff , od trans or not , you want to be into the powerband @ highway cruising speed
either of these should work well as you have the 4 spd & std brakes so comnverter stall & manifold vacuum are less of a concern
https://www.summitracing.com/int/parts/lun-10230702lk/overview/make/dodge
or
https://www.summitracing.com/int/parts/lun-10230703lk/overview/make/dodge

No OD trans......3.55's in the rear. 28" tire