help deciding cam for 383
03-21-2007, 04:55 PM
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help deciding cam for 383 
need help.. cant decide on which cam will be better for my set up.TREX cam 242/248 .608/.612
MS4 cam 239/242 .649/.609
SI7 cam 238/244 .605/.612
custom cam from futral 239/243 .645/.610
custom cam from thunder 238/242 .605/.610
the heads are only AFR205s milled 65cc
i know the cam differences are very slight, but can those slight differences make a big difference? ideas or thoughts anyone?
03-22-2007, 06:36 AM
#6
I'm running a 383 here with AFR 205 heads also.
I had been using the TR224 cam, but decided this year I needed bigger. ;-)
Since I was running AFR heads, I called Tony Mamo to get his advice on a cam for my setup. Tony recomends a 4 degree larger duration on the exhaust. They offer a 234/238 cut cam, which produces great results with thier 205 heads. So that is what I am going with.
The cam install is in progess right now, actuallt today! I'm awating my friend to stop over in an hour to help me out for the day. I took the day off just for this project.
Oh, dont forget, with all those cams you listed above, including the cam I selected - you'll need to upgrade your valve springs to handle that lift! I bought AFR's larger spring set to match the cam/setup.
Wish me luck today on the cam /spring istall, and good luck with your cam choice!
I had been using the TR224 cam, but decided this year I needed bigger. ;-)
Since I was running AFR heads, I called Tony Mamo to get his advice on a cam for my setup. Tony recomends a 4 degree larger duration on the exhaust. They offer a 234/238 cut cam, which produces great results with thier 205 heads. So that is what I am going with.
The cam install is in progess right now, actuallt today! I'm awating my friend to stop over in an hour to help me out for the day. I took the day off just for this project.
Oh, dont forget, with all those cams you listed above, including the cam I selected - you'll need to upgrade your valve springs to handle that lift! I bought AFR's larger spring set to match the cam/setup.
Wish me luck today on the cam /spring istall, and good luck with your cam choice!
03-22-2007, 07:33 AM
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id go custom all day long on a 383. the trex ams magic stick are desigend around a 346 remeber. id talk to a few people like patrick G or some sponsors/shops that have experince with optimizing setups. thats what i would do atleast 
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03-22-2007, 07:33 AM
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I a biased towards Futral since that is who I use. I have the 239/243 cam in my 383. If you do a search under my name you can see my results. I am currently awaiting a new set of heads to replace the box stock only milled Dart 205s.
03-23-2007, 03:59 PM
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Originally Posted by jay_99z
I'll add one more to your list. TSP Giant cam. I love it.
03-23-2007, 08:04 PM
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Originally Posted by Sigforty
I a biased towards Futral since that is who I use. I have the 239/243 cam in my 383. If you do a search under my name you can see my results. I am currently awaiting a new set of heads to replace the box stock only milled Dart 205s.
03-25-2007, 10:11 AM
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talked to Pat G. he mentioned that the old cam is well sized for the 346, but with the 383, he said 6 degrees more on duration. somewhere around 238/240 .605/.609 112LSA +2
