I wasn't even aware they made that. I think they probably finally realized that cam was just too big for a hydraulic. I mean really. lol
ran that cam in a 360. It doesnt clean up till 3k but hauls the mail after that. Got some 7.20 1/8 mile slips after I added some domed pistons.Was running low 8,s with the stock pistons.
A stock low compression 360 w/ a .509 is going to be a dog. 8.5:1 is not enough compression for that cam
it will have mushy low end unless you advance it and have some gear(and converter if you got an automatic) .ive got more sb grinds than i can ever use if your interested in something different.That's cool. I'm a little worried about my compression being as low as it is.
Ditto X2
X3
As someone posted earlier, Dave Hughes (a former Chrysler Engineer) has spent the last 2 decades designing and optimizing cams that run hard with low compression.
If you call him with your application, I doubt there's anybody out there whose more qualified or dedicated to the Mopar brand. His stuff is top notch, but in order to preserve warranty, he does require you purchase his other parts for compatibility. Comp's got some good low compression cams as well.
On a new cam, the best way to break one in is by using just a single outer spring. Use lotsa break in lube, prime the engine good, and get the rpms up quick to ~2000 for 10-15 minutes; shut it down and change the oil and filter. Then, drive it for about 100 miles, keeping the rpms under ~3500.
After that, put the inner springs on and drive it like you stole it.
If you insist on using the MP piece you have, then at least change head gaskets from the thick composition that's on it now, and get a pair of the .017 steel head gaskets to bump your compression up some. Even that won't get you optimal cylinder pressure, but it will perform better.
Southernman
it will have mushy low end unless you advance it and have some gear(and converter if you got an automatic) .ive got more sb grinds than i can ever use if your interested in something different.
great or sick minds think alike lol.i was thinking that would be a good choice for his set up as well,and ive got the hmv 278 on the shelf.i just was not willing to part with it just yet.the mopar purple 268/272 450/455 110lsa would work good too i think.Me too. If 340-8 doesnt have your grind of choice, I got a Crane Powermax H-278-2 (old HMV-278-2-NC part number) trade you straight across, keep your new lifters.
i ran the 484 on a 10.5 cr 360 and it had a lot of top end, if you have power brakes forget the 509 or 484 for that matter unless you use a vacuum pump. More than likely you car will be faster with a cam in the low 220's @.050 . Like cracked posted maybe you can trade.
I don't understand why everyone wants their car to sound cammed even if it hurts performance. A motor should be planned when built.
Rhoads lifters will help a ton.
i ran the 484 on a 10.5 cr 360 and it had a lot of top end, if you have power brakes forget the 509 or 484 for that matter unless you use a vacuum pump. More than likely you car will be faster with a cam in the low 220's @.050 . Like cracked posted maybe you can trade.
X3Rhoads lifters will help a ton.
x2 i didn't know they still make those things.
Though with what the OP has for a combo, I'd just run a smaller cam.