Heads were flow tested... Now I need a cam

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matttahoe53

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Well the ever growing engine rebuild which has turned into a full swap is headed into its final phase. Originally I was just going to do swap on the ram jet intake which turned into heads, cam, and intake and now has become build a 383 for the heads and intake. I was opposed to doing a 383 build because the heads I have were odd ball pro topline cast iron that had been ported and polished. I was under the impression the combustion chambers were only 60cc, too small to build an 87 octane 383 imo, but workable for a 350. Well I took them to a shop to have them flow tested and the combustion chambers and intake runners measured and it turns out the combustion chambers are 66cc and the intake runners are 185cc. This seemed like a perfect opportunity to use these and build an 87 octane 383 torque monster.

So I would like some opinions on rotating assemblies i.e. brands and components. The only thing I am set on is a 15-18cc 4032 dish piston. After that I am not sure as to rod length or type and whether or not to use a forged or cast crank.

I also am open to some cam recommendations. The goal for this build is a street-able torque engine. I already have thorley tri-y headers, full 2.5" exhaust, and pcm 411 swap. The truck has 3.73 gears and 33" tires. My truck is a 99 so I think the torque converter is a little looser than previous years and I would prefer to not buy another one unless absolutely necessary.

I am sure I am leaving something out. If you have any other questions just ask.
 

matttahoe53

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Here is the printout from having the heads tested.
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Big D

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is this going to be a daily driver? weekend cruiser? offroading mud monster?

got any part numbers on those heads you got?
 

matttahoe53

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Weekend/long trip cruiser and mild off-roading. I don't have any part numbers, just the testing results and that the springs are good to .6" of lift.
 

Big D

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popular camshaft that lots of people like for these trucks and makes for a good street truck is an LT4 hot cam with 1.6 roller rockers, also has a much nicer price tag on it then the 2 you listed.
http://www.summitracing.com/parts/nal-24502586

some cam crazy guys may disagree and say theres more power to be made, but most of them cant agree with each other half the time either.

lots of youtube links of the LT4 cam in there OBS trucks, not a sad face in the bunch.
 

meaderacer9

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I just built a motor for my 96 very similar to what you doing. I ended up with the cc502 cam. 218/224 at .050, .495/.503 lift with 1.5rr, on a 112 lsa. I think a cam similar to that with more lift would work well with your heads and what your looking to do with the truck.
 

matttahoe53

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Howard's suggested this:
http://www.summitracing.com/parts/hrs-180245-12

Crower suggested this off the shelf cam and a custom one:
00468lm
277° intake 286° exhausts advertised duration
225° intake 232° exhaust duration of .050
.565 intake .580 exhaust valve lift using 1.6 rockers
110° LSA

specifications: cam grind code B1607B1610 110
280° intake 290° exhaust advertised duration
228° intake 238° exhausts duration of .050
.580 intake lift .597 exhaust lift using 1.6 rocker ratio
lobe center 110°
 
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