318 cam and intake suggestions

-
As far as the intake goes there are alot of discussion about miss matched port sizes and all that but I recommend a regular old stock cast 340 or 360 four barrel intake. I ran one for years on an old 318 I slapped together and it was fine. I wasnt the most powerful engine in the world but you already said you dont care about power. Imo if you dont care about power and just want the sound swap the cam and run the original 2 bbl If you still got it.
 
I'd love to see someone do a direct comparison before/after with that sum 6901 and no other changes (but I would accept an Eddy 4 barrel and performer addition at the same time, since that's the next logical step).

I'd like to know 1/8 and 1/4 mile times and average MPG over the same set route.
 
YY1 said:
I'd love to see someone do a direct comparison before/after with that sum 6901 and no other changes (but I would accept an Eddy 4 barrel and performer addition at the same time, since that's the next logical step).

I'd like to know 1/8 and 1/4 mile times and average MPG over the same set route.
Click to expand...
Well lookie here, who just volunteered.... Subscribed. waiting results :poke:
 
I was not joking about the MP 508 cam. If your looking for that lope sound it certainly has it.
 
YY1 said:
I'd love to see someone do a direct comparison before/after with that sum 6901 and no other changes (but I would accept an Eddy 4 barrel and performer addition at the same time, since that's the next logical step).

I'd like to know 1/8 and 1/4 mile times and average MPG over the same set route.
Click to expand...
I was gonna do just that I was gonna run a stock compression 318 with the summit cam and a 340 intake Holley carb and headers. But during the tear down I realized that I was gonna have to bore the block (pitted bores) so I decided to spend that money on a 360 instead. I still have that 318 block if I ever get the money I will use it! I will accept donations to fund it and build it hahaha!
 
A decent sound on the cheap is this number installed at 100 degrees ICL to help maintain compression instead of at the recommended 107. With the lift numbers, it would be advisable to check retainer and guide clearance closely.
Chrysler 318,340,360 Hydraulic Camshaft by Speed Pro from Northern Auto Parts. It's available on amazon for a reasonable price. Even though it says smooth idle, I'd do the head and valvetrain work for this grind installed 4 degrees advanced ICL Street Master Hydraulic Flat Tappet Cam - Chrysler 273-360 266/266, be a lot happier package.
 
Last edited:
dartfreak75 said:
I'm interested in the cam grinding process. How can they take a small cam like a stock 318 and grind It to make it bigger?( higher lift) do they weld to the lobes and add material or something?? Sorry if this is a stupid question but i really dont know and i really want to know lol.
Click to expand...
Now let me say this right off. I have no experience with reground cams in automotive engines. My experience is with airplane engines on airboats. Your right. You don't make it "bigger". You re-grind and adjust in the rest of the valve train, ie longer pushrods, higher ratio rockers. Make sense?
 
moparmandan said:
Now let me say this right off. I have no experience with reground cams in automotive engines. My experience is with airplane engines on airboats. Your right. You don't make it "bigger". You re-grind and adjust in the rest of the valve train, ie longer pushrods, higher ratio rockers. Make sense?
Click to expand...
Ohhhhhh!! Yes that makes sence thanks!
 
DJC said:
my 360 with
COMP Cams: Magnum Muscle, 268AH-10: Cam & Lifters and a craigslist Torker II 340

No machining or head work, standard compression, you'll need springs for it. Sounds a little lumpier when it's in gear.

Click to expand...

This is very close to the
"Hemi" grind purple shaft from the eighties. It should work OK with a stock converter.
It's as large a cam that would have a chance of actually being a decent driver with everything else stock.
 
Oldiron440 said:
This is very close to the
"Hemi" grind purple shaft from the eighties. It should work OK with a stock converter.
It's as large a cam that would have a chance of actually being a decent driver with everything else stock.
Click to expand...
Looks like it for sure. A looser converter would make it more fun though. In a 318 it develops max torque at 3000.
 
Oldiron440 said:
This is very close to the
"Hemi" grind purple shaft from the eighties. It should work OK with a stock converter.
It's as large a cam that would have a chance of actually being a decent driver with everything else stock.
Click to expand...

That's what I was after, this was a very budget conscious build.
 
In the video above the idle is to high, I've always thought that the "Hemi" grind purple shaft was a great mild cam. The cam had a very nice sound at idle but would clean up with the slightest amount of throttle. In the mid nineties mopar gave the cam more lift and duration so I'm not talking about those cams. This is similar to the 80s cam. With a 600 vacuum secondary Holley or equivalent, headers and nice exhaust and a 3.25 up gear this would be fun.
 
You must log in or register to reply here.
-

Back
Top