Are you planning on using these parts on your 360 build as well when the time comes? What are your build plans for the 360? What are you looking at getting for numbers from your 360 when you are done?

Answers to these questions will help us help you decide whether or not you should be doing anything at all to the 318 or if you should focus all your money and attention to the 360. (at least it will help me figure out what advise to give you)

 

what are your plans for the car?
what rear end ratio do you have?

 

Also, what tranny are you running now and plan on running with the 360?

 

I also have a 318 that I had bored over .030, 71 360 heads with 2.02 intakes and 1.60 exhust. Torker II edlebrock intake, 484 lift mopar cam, 750 Holley, 4.56 rear, automatic torque converter, 3,000 stall speed with the revese cheeta vavle body, I also have the mopar pistions with 10.00 compression. All in a 72 charger, trouble is it dont have the pwer that I thought it should have it seems lazy....what did I do wrong????

 

do you race the car?
750 cfm is a lot for that motor
what is wrong with it?
how does it act?

 

No dont race it, just show and go....due to the 4.56 rear I cannot keep it up to high speeds for long periods, it dont hesitate due to over carb. or anything it just dont seem to be as fast as I thought.....no bang for the buck. Someone told me to lose the single plane and go with duel plane, tunnel ram?w/ two 600 holleys? Top speed is around 90 I have 25 inch tall tires on it. Gets high RPM fast.

 

Two 600s is good if you had a BB motor. Two 390 or 500s would be a bit much maybe even.

I would go with a dual plane intake and 600 carb. Also think about changing out those gears for 3.92 or 4.10. Your motor will thank you. Or you could tub the rear, shorten the axle and run some 29s.

What do you have for a rear axle BTW? Just wondering.

 

I have the mopar 8 3/4 ring and pinion from Sumit, had a local speed shop set it up. Its even hard to get the tires to spin, I have the correct gear in the tranny to make the speedo the right speed. How much do you think taller tires would help? What do you think for a duel plane? Is the mopar M-1 for small blocks and is it a duel plane? Oh by the way...its the rear end that comes out the front....the older 8 3/4 I changed the rear end brake drum to brake drum....also have the mopar preformance leaf springs...both sides.

 

A taller tire will give you better top end. What gearing do you have in the axle? Also, do you have any traction ad devices (posi, spool, locker, etc.)?

I am unsure about the M-1 intake.

 

The third member is 4.56 Richmond from Summit..posi, see above thread. Axles are the stock ones that were in it, had the local speed shop put it in. Other then that a pinion snubber...still have the same problem.....seems like it should have more power.

 

I would go with a comp "XE" series cam. about .470-.480 lift. An eldeb. dual plane.( performer RPM ) and a 600 cfm carb. you are going to probably have to recurve the distributor. Probably need 10-12 degrees initial advance and 34 total all in by 2500 rpm. Put an extra 10-12 in the vacuum advance (starting in @ about 1/2 of your highest vacuum reading) I think the gerars are a bit high, especially to maintain any kind of speed.
3.91's would be better. Just my .02 ........ENJOY!

 

unless the car is an everyday racecar, then i would change the gears to 3.91 like theomahamoparguy said

 

I agree with all that is said. a Dual plane intake like a Edelbrock air gap or a Weiand Stealth in take like this one from Summit.

http://www.summitracing.com/parts/WND-8022/?image=large

A 600 CFM carb will be more than enough like everyone was saying. How is your trans set up?

I had a 71 Dodge D100 with a 318 stroker engine with 360 J heads 340 intake and 600 carb. 727 trans with shift kit and the rear was set up with a 3.23 gear set. It was plenty quick.

 

The original post by 45target has not been adressed. Seems all answers are directed toward karkrazy.

 

Yes you are right. I hope he comes back.

 

What trans, rear gear do you have? just Doing those mods will help wake up your 318.

If you want to keep the rest stock here is a cam that might be good for you might.

http://www.summitracing.com/parts/DCC-4452782/

 

Thanks for all the help, the trans has a shift kit with the reverse cheeta valve body from summit and a 3,000 stall speed. Would post a pic of the car but im in Florida and the car is in Connecticut right now, will try your ideas when summer comes.As a side note I might be coming into a 71 Charger...to bad not the R/T just the plain jane. Thanks again.

 

I would really check ignition timing, if car seems "lazy" you should have enough power to transform rear tires to piles of powder, with the 56's....even though the car is relatively heavy.....
Have no spec sheet for cam or specs on distributor, but thats where i would start....

 

I agree with MrOldDart...even though I only work on chebys the last time someone brought me a truck described as "lazy" I fixed it by advancing the timing 1 tooth. turns out when the owner had his buddy or someone do the intake manifold gasket he accidenatly reatrded the timing by a tooth. So since it was the 1st thing I checked it was an easy fix. good luck