pontiacfreak142 Posted May 18, 2011 Report Share Posted May 18, 2011 Im looking to order a cam for my 383 in the next couple of days. So far ive emailed comp with most of the specs of the motor and they recommended a cam, that i thought was pretty decent, but says its pretty mild on jegs web site. The part number for it is 12-342-4. specs on the motor so far, 383 stroker 11.5:1 compression aluminum heads 2.02/1.60 valves 190cc runner looking to keep from having to spin it much past 6500 rpm 1/4 mile car. Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 18, 2011 Report Share Posted May 18, 2011 Small blocks love lift. But, have you done any measuring to see how high you can go? Piston reliefs? Already have your springs? EDIT - looked up that part number. For your set up, that's a pretty good choice, IMO. I've kept between 292-302 duration and 510-525 lift on 383's and been happy with the blend of lope and performance. Hydraulic Flat Tappet Camshaft Lift .510"/.507" Duration 296/305 RPM Range 3000-6800 Quote Link to comment Share on other sites More sharing options...
LeonbergerG Posted May 18, 2011 Report Share Posted May 18, 2011 This for an lt1? Quote Link to comment Share on other sites More sharing options...
Nickey4271647545519 Posted May 18, 2011 Report Share Posted May 18, 2011 Call this man. He designs cams for a living and gives out plenty of free advice, dude is a goldmine. Harold Brookshire aka UDHAROLD 662-562-7400 Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted May 18, 2011 Report Share Posted May 18, 2011 This for an lt1? Old sbc. Quote Link to comment Share on other sites More sharing options...
LeonbergerG Posted May 18, 2011 Report Share Posted May 18, 2011 That's not to bad of a cam.just make sure it matches your heads...converter...etc... Quote Link to comment Share on other sites More sharing options...
pontiacfreak142 Posted May 18, 2011 Author Report Share Posted May 18, 2011 That's not to bad of a cam.just make sure it matches your heads...converter...etc... it does, comp has a section on their web page that you can put the specs of your setup and they recommend the cam depending on that. Quote Link to comment Share on other sites More sharing options...
pontiacfreak142 Posted May 18, 2011 Author Report Share Posted May 18, 2011 Small blocks love lift. But, have you done any measuring to see how high you can go? Piston reliefs? Already have your springs? EDIT - looked up that part number. For your set up, that's a pretty good choice, IMO. I've kept between 292-302 duration and 510-525 lift on 383's and been happy with the blend of lope and performance. Hydraulic Flat Tappet Camshaft Lift .510"/.507" Duration 296/305 RPM Range 3000-6800 no idea on the piston reliefs, but the heads im getting have springs that are good to .600 lift. and good to know, just wasnt sure how this cam would do seeing as it said it was mild. i mean im not looking to go crazy by any means, just something thats gonna run good. Quote Link to comment Share on other sites More sharing options...
LeonbergerG Posted May 18, 2011 Report Share Posted May 18, 2011 Make sure your springs don't have to much seat pressure or they will wipe out a hydraulic flat tappet cam.. Quote Link to comment Share on other sites More sharing options...
twistedfocus1647545489 Posted May 18, 2011 Report Share Posted May 18, 2011 That cam really isn't all that mild. It's not a really high lift, but it's 246/253 @.050. In a 383 that's not a huge amount of duration, but its still pretty stout. It also has a very narrow lobe separation and would probably work well for you since you actually have enough compression to make use of it. I'm no cam expert, but I think it's a pretty sound option. I second the suggestion to check your seat pressure on those springs to make sure it's not too much. As long as the springs are within spec and you use a good break-in lube you shouldn't have any lobe wipe issues. EDIT: Comp calls for their 986 spring for that cam. It's 132lbs on seat at 1.75" (293lbs open), which is fairly heavy. I doubt whatever base option springs you get on your heads will be any heavier, but it's still a good practice to check them. Quote Link to comment Share on other sites More sharing options...
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