I need some input on which cam would be best for my application. Motor is a 302 roller motor standard bore, Edelbrock RPM Performer heads with 2.02 valves, pistons are fly notched for big valves, intended use for car is mainly racing but some street driving as well. 3,000 stall convertor with 4.11 gears, 650 dp, old torker intake, hooker 6901s, Msd ignition, crane gold roller rockers, stud girdle,main girdle, pioneer sfi harmonic balancer. Currently using a e303 cam,winds to 6,500 no problem but think I could get a little more out of it with a different cam, runs 13.12 to 13.20 consistantly. I know I probably opened a can of worms here but would like to hear from others
Had that similar combo and a trick flow stage 2 cam it worked well 12.80`s in 3000lb car . If you can still find them think they were in summit or jegs.
What compression ratio do you have? Unless its a bunch the heads are the limiting factor in youre combo. The cam could be better but, the heads and compression is whats killin it.
Look at my combo below. Except for the roller I have almost the same build. My previous cam was a crane solid that ran 11.98 w/o gas. Now I am running the comp cam 282s and it feels a little stronger on the lower end and still pulls to 7000 (as far as I have gone) No track times with the new cam but I doubt I lost anything. Scott
Go to a solid roller and you will see some difference. I assume you are running flat top pistons too, which is alright for your application, but is the block decked to "0" deck heigth? Have been running those RPM heads for years on all my engiines, even the present alky injected 347. I think the manifold could be holding back a little. I would recommend the RPM air gap or even try the Jr. Cam should be around 106 centerline and close to .548 lift. Should give both bottom end and some good top end results too. Don't forget to match which ever cam you use, with the correct valve springs and installed height etc. The fairmont weighs about 2500lbs with my skinny butt in it, runs low tens in the 1/4 according to the calculations on 1/8th mile times. 4:86 gear with 1.76 glide and 5000 stall converter. 1.42 60's. Shift at 6800 and turns 7200 at the 1000fr finish line at our local track. Hope this will help you come up with a combo to fit your needs. JMO as always.
Just a quick question.... What stud girdles are you running on your Edelbrock performer heads yellow75? I saw a set of harland sharps I was thinking of, but in summit it said it would fit victor heads, no mention of performer.... I have performer rpms, i don't think theres a difference in spacing of the studs.
As others have mentioned, a solid roller would be the way to go. For a little more than an off the shelf cam you can get a custom and know it's right for you and your car. I'm not a fan of Ford's "alphabet" cams, 20 year old technology. For off the shelf it's hard to beat Comp's XE series. For something like $50 Jay at Camshaft Innovations will take all of your information and recommend the best off the shelf cam. or he can grind you a custom.
Had to log in just to say, Pyt a blower grind with a blower and youll be saying , Why didnt i do this to start with? Just my opinion.
As I suspected a lot of good information, one thing that seems constant though is a solid roller cam, I know solid rollers are good I had a solid non roller cam in my last motor and it worked well and didnt have to adjust lifters all the time like some people say. I will do some investigating and see whats out there. I also think a split duration cam would be better as well but if I was to stay with a letter cam I would go with the X cam. T.L. nothing is really wrong with what I have, just keeps me out of trouble when I am tinkering with car over the winter. Yeah a blower would be cool,I have 2 supercharged rigs now and I know what kinda butt pucker factor they give you. I have always wanted to put some a Hilborn injection set up on a car, 8 stacks coming out the hood would be really cool. I really thing I also need some more stall speed 60 foots suck at 2.00s, I was going to get a 3,500 and the convertor builder told me a 3,000 would be better suited for me with 3.50 gears then I changed gears to 4.11s. Motor ran 12.50s in my 61 Falcon backed by a toploader, cars weigh about the same, Falcon had full cage, so the auto slowed me down some and just looking to get back to those times.
