318 cam?

[paulgrr63]

I am sure this topic has been beaten hundreds of times but I gotta ask. What is a good cam for a 318? It is all stock and was thinking about getting this package from summit http://store.summitracing.com/partdetail.asp?part=CMB-03-0162&view=1&N=700+

After doing some reading I'm starting to think the Lunati cam might not be such a great idea? Can someone point me in the right direction? Thanks

[Rolling_Thunder]

you look to have a 73 Dodge Charger...   If your engine is indeed all stock you'll be fighting a low 8.6:1 compression ratio...     the way to make power with this is to go very conservative on the cam...   less overlap allows for less cylinder bleed off...         

Realize that this engine needs compression to really make power.

[paulgrr63]

I was thinking about adding some 360 heads as well.

[WingCharger]

Your Charger is SHARP!!

[paulgrr63]

Your Charger is SHARP!!

Thanks!

[mopar_nut_440_6]

That engine would be perfect for turbocharging!

[paulgrr63]

That engine would be perfect for turbocharging!

Dont get any ideas

[mopar_nut_440_6]

Haha... I have seen /6's bone stock internals running high 12's on street tires and getting 20 MPG!

[bordin34]

While the 360 heads have bigger valves and ports, they also have a larger combustion chamber which will further reduce your compression ratio.

[paulgrr63]

While the 360 heads have bigger valves and ports, they also have a larger combustion chamber which will further reduce your compression ratio.

In other words....stay away from them?

[Rolling_Thunder]

While the 360 heads have bigger valves and ports, they also have a larger combustion chamber which will further reduce your compression ratio.

In other words....stay away from them?

unless you plan on rebuilding the bottom end with different pistons...       

If you're keeping the stock short block than yes - stay sway from the 360 heads...   

[paulgrr63]

While the 360 heads have bigger valves and ports, they also have a larger combustion chamber which will further reduce your compression ratio.

In other words....stay away from them?

unless you plan on rebuilding the bottom end with different pistons...       

If you're keeping the stock short block than yes - stay sway from the 360 heads...   


Ok thanks. So here is what I have so far that I am going to order. Edelbrock Performer Dual plane intake, Holly avenger carb(670cfm), TTI headers, and this cam: http://store.summitracing.com/partdetail.asp?part=LUN-60401

How does this look?

[firefighter3931]

I like that package but would change the cam profile for something more conservative. What are the rear end gears ? Stock torque converter ?


Ron

[paulgrr63]

I can get my hands on 1994 Magnum heads. Should I bite?

[paulgrr63]

I like that package but would change the cam profile for something more conservative. What are the rear end gears ? Stock torque converter ?


Ron

I have 2.71 gears in the rear (Thanks 69CoronetRT ). And yes, it is a stock torque converter(Plan on getting a 2250 stall soon)

[firefighter3931]

I like that package but would change the cam profile for something more conservative. What are the rear end gears ? Stock torque converter ?


Ron

I have 2.71 gears in the rear (Thanks 69CoronetRT ). And yes, it is a stock torque converter(Plan on getting a 2250 stall soon)

Personally, i would be looking to swap in some deeper gears long before upgrading the tq converter. 

Those 2.71's with a stock 318 will make the car feel very slow....a gearset will really wake it up. How tall are your back tires ? Taller tires only compound the problem by reducing the final drive ratio so that needs to be taken into account when picking gears. 


Ron

[paulgrr63]

I like that package but would change the cam profile for something more conservative. What are the rear end gears ? Stock torque converter ?


Ron

I have 2.71 gears in the rear (Thanks 69CoronetRT ). And yes, it is a stock torque converter(Plan on getting a 2250 stall soon)

Personally, i would be looking to swap in some deeper gears long before upgrading the tq converter. 

Those 2.71's with a stock 318 will make the car feel very slow....a gearset will really wake it up. How tall are your back tires ? Taller tires only compound the problem by reducing the final drive ratio so that needs to be taken into account when picking gears. 


Ron

I will measure them tomorrow

[paulgrr63]

The back tires are 24".

[firefighter3931]

Paul, any plans to go with a taller tire ? A set of 3.23-3.55 gears would be my choice. 



Ron

[paulgrr63]

Paul, any plans to go with a taller tire ? A set of 3.23-3.55 gears would be my choice. 



Ron

I am leaving the tires that it has now. I think they look good

This might be a stupid question......but where do I get the gear set? Exactly what do I have to order? Again, forgive me for the stupid questions. I'm not the most car savvy person. Im still learning!

[firefighter3931]

Dr Diff can fix you up with all the needed parts 

doctordiff@gmail.com



Ron

[paulgrr63]

Dr Diff can fix you up with all the needed parts 

doctordiff@gmail.com



Ron

Sent him a message. Thanks for all your help

[paulgrr63]

Dr Diff can fix you up with all the needed parts 

doctordiff@gmail.com



Ron

Still no response

[Purple440]

Who is this Dr Diff anyway?  I'm looking for a set of 3:91's....