Okay here's the big picture. I am working with a stock 318. I picked up an edelbrock streetmaster single plane intake for it. I'm planning on using a 500 cfm carb. Full length headers(****** comps,gotem free). Freeway gears in the rear and want to keep them. Looking for good torque to get the car moving without having to go with a lower gear ratio. Not really interested in high horsepower and not alot of changing parts. I'd like to keep this low-buck. Thanks for the help guy's. later shawn
Not to be rude byt the first thing would be to throw that intake away.It will only run good at high rpm you need a dual plane for your rpm range.I would pick a cam with around 230 @ .50 or less duration and no more than 500 lift.Keep in mind I dont specialize in cams this is just my experiance.
Not this intake, the plenum is really small, not like a Weind team G which is pretty big. This intake is for smaller cubic inch motors like 273,318. later shawn found one on the bay,check it out, good pics of it. http://cgi.ebay.com/ebaymotors/Edel...uck_Parts_Accessories?_trksid=p4506.m20.l1116
Go to Mopar. Use the 70-71 340 cam or the 360-4v as a smaller second choice. Both work great in the 318.
One of the "purple shafts" will work good also. Can't get new anymore, but I liked the old Hemi grind for the SBM. Worked great!!
Go to Hughes engines http://www.hughesengines.com/ Dave Hughes will talk to you more often than not. These cams are awesome. He will ask you what compression, what heads, gears, etc. Then hook you up. It has been my experience that going from a purple shaft to one of his cams of roughly the same specs it was night and day. Tons more bottom end.
My experience with small blocks is limited, but I agree with the intake. Definitely dual plane. For nice torque and a lower RPM power curve, I settled on a 244/464 purple shaft with a 3 degree offset key the last time I did one. Power curve starts about 1800 / ends around 4000 or so. Gives you a chance to pull it out of the hole under control and go down the freeway running on the edge of the stick. Nice lope, decent power. Just my 2 cents. I also agree with calling a company that has the computer to really dial in your wants/needs. Bruce
http://store.summitracing.com/partdetail.asp?part=DCC-4452782&autoview=sku This will work well with your set up.
Hey guy's thanks for the tips. I was going to keep this motor bone stock because of the rising gas prices but people I've talked to say I'd use more fuel trying to get my car moving with the factory 2V. later shawn
I agree with v8 bake on the intake. For the street with a basically stock motor, dual plane intake is the best way to go. also I would stay below 480 lift. I ran a 360 in a demon with a 4 speed for years. stock bottom end, ld4b intake (very good intake if you decide to put 340 or 360 heads on it), and a 480 lift cam. ran great, a little lumpy, lot of fun. I did run 4:10 and up gears. my 2 cents
Do not buy Mopar performance anything anymore ..Its all **** , its all foreign, cheapest bidder, peeewwww I source everything outside the brand name, it hurts me but ..****s **** under corporate flag two cents
deffinitly a dual plane,,PERIOD,,, open plenum are high rpm intakes only ,,a dual plane is usually good from idle or around 1500,,single plane,usually 2500 rpm and up,,, a may also be going the 318 route and will need a mild cam,,mid range for cruising,,if you cal hughes you may want to tell him weather your running power brakes or not,,so he can give you a cam that stil makes vacuum,,,one word DO NOT OVER CAM a small block mopar,you can get away with a big cam in a 360,longer stroke,, 273/318/340 doesnt like to be over cammed,,,just my 2 cents,of experience,,,lets hear what you pic for a cam,,,
S**** that intake get one of the duel bolt pattern intakes off ebay that is pretty much just an eddy airgap without the Eddy name or price. If I remember they are called Crosswind intakes. Go with a 340 cam, a Eddy 600cfm carb and some good exhaust and you will be set. I ran close to that same combo on a 360 in a 73 Scamp for years and it and some good get up and go along with decent (for what it was) gas mileage. Don't even think about anything with the name Weiand for your mopar. You will be lucky if only 2 of the bolt holes line up. The last 2 I ordered had some holes off by more than 1/4 inch and the casting was so bad that it would cut your finger if you rubbed it!
The small single plane Streetmaster 318 (circa 1970's) intake is one of THE best intakes for 273's and 318's. It is in fact NOT a high RPM intake, but a great low RPM torque intake. Most new mopar intakes are designed for the 360 and are not port matched for the smaller motors. I'm running one on my 273 with a Holley 600 and it couldn't run better. Don't throw it away. That would be so stupid. Run it, you'll be very happy. I was on a strict budget when I built my motor, so I went with a Summit Racing cam and lifter set. Still running strong...
Hi. To agree with the last guy. The streetmaster sounds good. Early 273's and in fact my 88 Dakota have a factory single plane intake, just small runners. Stay extremely conservative with cam choice. What about one of those SP2P 4 barrel intakes? They are dual plane and an unconventional runner arrangement that is superior for mileage and torque. I forget who makes them. Roundheads forever!
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