284/484 MP cam install

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J

joedart

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HELP! I have seen articles on the MP 284/484 cam installed at a 106 intake centerline on mild 360 builds. My question is what would I lack or benefit if it was installed straight up 0 on my mild build. 360,10.5,stock crank and floated rods,windage tray,2.02/1.60 J heads comp. valve job, smoothed and gasket matched,valley tray,stock 4brl intake smoothed and gasket matched,headers,modified 750 holly.
 
I've ran that cam in a build very close to yours and really liked it. I installed it straight up. You cam move it around and see where the best power is. The comp cam extreme engergy has 4 degrees already built into the cam when it was ground. You might want to try installing it with 2-4 degree advance but without back to back track times I'm not sure you will notice that much difference. Just my two cents.
 
Probably only cause a miniscule loss in bottom end power. You could probably overcome that loss with a decent torque converter.
 
Two degrees advanced will aid in low end torque , may even provide a bit more vaccuum at idle . I ran this cam in a low comp. 360 Auto , you definitely need 4.30 + gearing and a good 3500 stall convertor . Ran the cam both str. up and +2 deg. I didn`t see a lot of difference , but your comp ratio`s higher . Good cam , should run good for you.
Chryco 557
 
What were your e.t.'s with that motor and what car? Also I have 3.91s is that going to effect or should I run a steeper gear? Did not know this submitted so their is two posts.
 
chryco 557 said:
Two degrees advanced will aid in low end torque , may even provide a bit more vaccuum at idle . I ran this cam in a low comp. 360 Auto , you definitely need 4.30 + gearing and a good 3500 stall convertor . Ran the cam both str. up and +2 deg. I didn`t see a lot of difference , but your comp ratio`s higher . Good cam , should run good for you.
Chryco 557
Click to expand...
Would 3.91s work or should a steeper gear be needed? Also what were your e.t.'s with that motor and what car.
 
The car the 360 was in was a 1977 Aspen R/T ran the stock convertor ,(don`t do this ), Rebuilt A999 t/f , Weiand Excellerator intake , 780 Holley vac sec , 1 5/8" Casler headers , and a 4.30 suregripped 8 1/4" with street tires ( M&H L60`s) Ran low 14`s High 13`s . Car was heavy , suspension was stock. This was in the late 70`s.
Chryco 557
 
chryco 557 said:
The car the 360 was in was a 1977 Aspen R/T ran the stock convertor ,(don`t do this ), Rebuilt A999 t/f , Weiand Excellerator intake , 780 Holley vac sec , 1 5/8" Casler headers , and a 4.30 suregripped 8 1/4" with street tires ( M&H L60`s) Ran low 14`s High 13`s . Car was heavy , suspension was stock. This was in the late 70`s.
Chryco 557
Click to expand...
Do you think with my combo, 68 Dart, 3250lbs with me in the car 26x9 slicks with all stock rebuilt suspension get me into the mid-13's or high 12's?
 
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