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I was looking through the online MP catalog and there are TWO cams with .509"/292 specs. One has 6 degrees less overlap for improved street manners. (if I remember the data right)

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If you really like this cam, I suggest you get a Racer Brown SSH 44. The MP 509 cam was a near copy or the SSH 44. Before there was Direct Connection or the later Mopar Performance the Mopar race bulletins recommended Racer Brown cams and many of the Purple shafts were in fact copies of Racer Brown designs. The advantage of getting the "real" 509 cam from Jim Dowell at Racer Brown is that he will custom tailor it to your combination. He will give you the LSA best suited to your car and also grind in the best advance for you. I've dealt with Jim in the past and have always gotten good service and sound advice.

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The SSH-44 and its little brother the SSH-25 are both great cams.

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I was looking through the online MP catalog and there are TWO cams with .509"/292 specs. One has 6 degrees less overlap for improved street manners. (if I remember the data right)

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Yeah, & the one on the 114 is a p*ssi cam, you want the one on the 108 & dial it in around 102, i've run this cam in 3 440s & even lined straight up they rocked.

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If you really like this cam, I suggest you get a Racer Brown SSH 44. The MP 509 cam was a near copy or the SSH 44. Before there was Direct Connection or the later Mopar Performance the Mopar race bulletins recommended Racer Brown cams and many of the Purple shafts were in fact copies of Racer Brown designs. The advantage of getting the "real" 509 cam from Jim Dowell at Racer Brown is that he will custom tailor it to your combination. He will give you the LSA best suited to your car and also grind in the best advance for you. I've dealt with Jim in the past and have always gotten good service and sound advice.

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The SSH-44 and its little brother the SSH-25 are both great cams.

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Cam ADV, DUR-----lift-----.050 Dur

SSH-25 ---286------.485-----236

SSH-44----292------.510-----243

MP-509----292------.509-----248



All of these Old school cams are great. Todays modern cams have nothing on them except a little extra lift.

Example: The 35 year old MP 509 248* duration cam has the following intake valve timing at a 104* ITC. Followed by a MODERN day cam from HUGHES with a 250* duration.

MP 509 Intake. open @ 20* BTDC, close @ 48* ABDC

Hughes, 5056---open @ 20* BTDC, close @ 50* ABDC

35 years later and we have nearly the Same exact timing events with a similer size modern cam,- the extra 2* of the 5056 250* duration @ .050

IMO, The tricky part of the cam Design was figured out YEARS ago. The above shows that IMO


Example; If you have 248* of intaske duration to play with, where do you put the valve events at BTDC and ABDC??

Open @ TDC, close @ 68* ABDC, OR

open @ 10* BTDC, close @ 58* ABDC, OR

open @ 20* BTDC, close @ 48* ABDC, OR

open @ 30* BTDC, close @ 38* ABDC.


And after 35 Plus years of Study, the answer is,??

The same as 35 years before!! . mike