383 with MP .474 cam - anyone running this combo?

I like the Vodoo 220/226 @.050 475/494 @112cl on my stock 383rr, with 915's and 9.7cr. lots of vacuum for PB, pulls hard on the low to mid range, buddy with a mostly stock 70 440 cuda was surprised how it kept up with him. I was very carfull not to give in to the bigger is better cam picking, especially with the 383.

I'm running one in my 440,68 charger. I ran a 13.094 with it at the track with 3.55's, 2800 converter, way too tall hoosier street slicks (had tread) 10:1, 1 3/4 headers, performer rpm, eps750 edelbrock carb, MP electronic ign. kit with orange box.

I pretty much set the initial timing and never touched the carb, dist curve. If I even came close to knowing how to do any of that, I might have gotten her into the twelves that day.

i put that cam in a 360 and its a dog too

Tony I ran that cam in a 340 Dart years ago. It was a 1970 version 340 and I rebuilt it all stock but with that cam. I added headers with an Eddy dual plane intake and a 650 DP. I threw the car together for my girlfriend at the time and I had a stock 318 version 904 tranny with the stock converter and 4.10's in the 8-1/4 rear. The car ran great as it had good low end and would spin the tires from a 15 mph roll. It ran 13.40's @ 105 the one time I ook it to the track. I really like that cam. Ron

run that cam in 68 383 coronet. best of 13.5@105 with stock converter.

We have ran the old street hemi grind cam in the 383 with GREAT results.The old specs are 284° 471I/474E.It's a very good cam to use.

I had it in my 70 RR, 383, 4 spd, 3:55, Performer RPM, Really lacking in the low end...

Keep searching; Go anything Voo Doo / lunati...

also hadrefurbished heads w/ big valves from aero heads. Bigger valves couldv'e been problem.

I still have that cam in my 383 GTS, and really like it in my application. It ran low 13s at about 107 w/ full exhaust and G70 14s and a slipping clutch.

However, I have a 3.91, good CR and cylinder pressure, Rhodes lifters, 4 speed, 1 5/8" under chassie headers, and of course it is lighter than yours. I think that my application is different enough from yours and that puts me on the fence for recommending this cam in your application. With your weight, gear, converter, and cyl. pressure (I'm guessing that it is low), I would probably go a little smaller.

If you are leaning toward a MP cam, I would consider the 272* cam. This cam is usally overlooked, probably because it is so close to stock based on the numbers. I've run this cam in my Charger before I put in the new motor, and it ran 12.90s regularly at about 108 (exhaust manifolds, 3.23, and stock converter)

Thanks for the input and posting your combos. The engine is a '67 383. Not sure of the compression, but I can only imagine with the open chambered heads its not good. I also have no idea if/when the engine has been rebuilt, so I can only assume they are stock slugs. It "looks" like it has been worked on, or at least painted on not too long ago.

I can always mill the heads for some compression, but thats about as much as I care to invest into this engine. On a side note, what happened to the MP steel shim head gaskets? Can't seem to find them anywhere, but then I found Summit has them listed for almost $200 dollars. Didn't they used to cost like $20 bucks?

Oh boy, I hate to say it but youre going to have to change those heads if you want any power. You can probably get someone with a set of usable 516 closed chambers to trade you or sell yours to buy a pair. You will loose some flow but youre really going to need that compression, its going to be terrible.
Either that or have yours milled to about 80 CC, which is doable, youre just going to have to have the intake side machined as well.

I also like the 272 cam mentioned before, when I had my GTX it had a purpleshaft in it and Im not 100% sure which one but I beleive it was the 272 because it idled pretty tame. TONS of low end torque, half throttle and the tires were TOAST.

MP's supplier said they didn't want to make those steel shim gaskets anymore. It went out for requote and took off like a lead balloon....none of MP's supply base is interested in making them. Volume must be too low or something? MP then superseded them to a thin Cometic, and that's why the price went way up.

That said, Mancini is looking into having the steel shims made again independantly of Mopar but I'm not sure where they are at in that process.

If you're absolutely, definitely going to run a 3.91 gear the .474 won't disappoint you. Any less gear than that, and I'd use the 272/455 cam instead.

napa lists the shim online. Doesn't mean they have them but they are listed.

We had one in a low comp 383. Our 75 dodge truck is probably the same weight as your newport

Performer RPM, good exhaust, good ignition. Bowl Ported 906 heads.

Doggiest engine ever. Gas pig. No torque.

We learned some good lessons because of that cam though, such as:

- Have a modern lobe profile cam ground up, or use one an off the shelf comp XE. Small hughes, Bullet/ultradyne/,voodoo, whatever...

- Low comp 383's aren't for heavy vehicles.

If it were me...I'd pass on the MP

I ran one in my 70 Challenger. Stock 383HP convertor, stock intake and exhaust system, true 9.5 compression, cam degreed in. I didn't like it, not much performance IMO, I think it would have run better with the stock cam.

Sheldon

I think if it is a budget deal and you do not already own the 474 then you should look at the summit cams. I think the larger of the 2 summit cams is still smaller than the 474 and will work better in your setup.
Todd