383 LS6 Does This Look Right?
just the intake and exhaust changes... 
04-02-2012, 04:47 PM
#22
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That thing with a 150 shot is going to make monster torque. It's definately going to be a drivetrain killer. I'd run a larger cam just to bleed off some of that torque for spray.
04-02-2012, 10:38 PM
#23
I don't think it's too far off but I would Definetely go with more cam. Heads are terrible but Definetely wouldn't hurt to breathe and with the stroker you won't have an issue with low rpm power at all. I have a 396 with PRC stg 2.5 ls6 heads and a custom grind 246/252 @.615/.625 on a 110lsa, all motor it has way too much power to hook down low on the street even on mickeys. I put over 5 to the wheels and Through an auto. You could easily be right there with a cam swap. And throw nitrous on a stroker and I can not tell you how absurd the torque picks up. Love these ls1/6 stroker builds, keep it up!
04-03-2012, 06:57 AM
#25
I've got the NX wet kit awaiting install...I don't think it's too far off but I would Definetely go with more cam. Heads are terrible but Definetely wouldn't hurt to breathe and with the stroker you won't have an issue with low rpm power at all. I have a 396 with PRC stg 2.5 ls6 heads and a custom grind 246/252 @.615/.625 on a 110lsa, all motor it has way too much power to hook down low on the street even on mickeys. I put over 5 to the wheels and Through an auto. You could easily be right there with a cam swap. And throw nitrous on a stroker and I can not tell you how absurd the torque picks up. Love these ls1/6 stroker builds, keep it up!
04-03-2012, 09:26 AM
#27
If you can help it...you probably should look into a moser 9 inch and get a stronger driveshaft.
04-03-2012, 09:41 AM
#28
It's the price we pay, right? LOL, I'm just glad everyone was safe (RPM dyno tuner/mechanics) and that it happened off the road or track. This gives me the opportunity to upgrade my bellhousing, install the speed bleeder I had sitting around, address the sticky shifter, etc.
The Strange S60 and chromoly driveshaft built for the car were watching from across the shop the whole time, LOL!
Generally I'm pleased with how the intake and exhaust changes smoothed out the top of the curve. If you look at my first post, I suspected valve float. The new curve indicates that may not have been the issue, it was more than likely intake or exhaust restriction.
Someday a cam swap may be in order, but generally I enjoy the torque and sound this cam gives me... so nitrous is next and then I'll decide on the cam. Thanks to all you cam guys who offered suggestions!
Generally I'm pleased with how the intake and exhaust changes smoothed out the top of the curve. If you look at my first post, I suspected valve float. The new curve indicates that may not have been the issue, it was more than likely intake or exhaust restriction.
Someday a cam swap may be in order, but generally I enjoy the torque and sound this cam gives me... so nitrous is next and then I'll decide on the cam. Thanks to all you cam guys who offered suggestions!
09-16-2014, 01:13 PM
#29
Update! I switched to true duals dumped, went SD (deleted the MAF and put a new IAT in) and switched to truck coils with the dwells adjusted. After some adjustment, we got to 482WHP and 474WTQ with the same old baby cam and heads. I don't have the dyno chart, I'm going to see if they can email it to me. Timing was 28* and AFR was 12.8.
Interestingly, we discovered that with 54# LS2 style injectors I was running out of pump! Fortunately, I had installed a second pump in tank that I activated and we were able to continue to make pulls.
I talked with Martin @ Tick about another cam to see what he would recommend, suffice it to say it's incredibly different than what I have. I'm not sure if I'll go to it, I have other plans for power...
Interestingly, we discovered that with 54# LS2 style injectors I was running out of pump! Fortunately, I had installed a second pump in tank that I activated and we were able to continue to make pulls.
I talked with Martin @ Tick about another cam to see what he would recommend, suffice it to say it's incredibly different than what I have. I'm not sure if I'll go to it, I have other plans for power...
09-17-2014, 06:53 AM
#32
Nope, not even the same state. Previously pulls were made in Delaware, now in south MS. I'd hope to say the DA was similar, but I'd guess the pulls in April in DE were more favorable due to the temp and similar altitudes. I hope to get the graph to see sometime this week.
10-08-2014, 11:52 AM
#35
Nope, not even the same state. Previously pulls were made in Delaware, now in south MS. I'd hope to say the DA was similar, but I'd guess the pulls in April in DE were more favorable due to the temp and similar altitudes. I hope to get the graph to see sometime this week.
Was it even a DJ dyno? SAE Corrected?
10-10-2014, 12:36 PM
#36
I attribute the change to the addition of true duals, even though the rear end was swapped from a 10 bolt with 3.42s on your dyno to the S60 with 3.54s here.
10-14-2014, 11:04 AM
#38
450rwtq is more like it. I would expect a 383 to make something in the 460-480rwtq range with the right setup. HP wouldn't be much more due to the bore. In fact, if you pick a cam you like for a 346, simply extend the LSA out 3-4 degrees or so to delay the IVC to 48 degrees or more. And you can add 6-8 degrees of duration as well and it won't affect anything. The 383 will make power throughout the range - don't cam it like a 346.
So a 228/232 111 is good for all around power for a 346... add as I said and you end up with a 236/240 114. They will drive similarly and have similar curves... just the 383 will be up 30-40rwtq under the curve.
So a 228/232 111 is good for all around power for a 346... add as I said and you end up with a 236/240 114. They will drive similarly and have similar curves... just the 383 will be up 30-40rwtq under the curve.
07-02-2015, 12:43 PM
#39
450rwtq is more like it. I would expect a 383 to make something in the 460-480rwtq range with the right setup. HP wouldn't be much more due to the bore. In fact, if you pick a cam you like for a 346, simply extend the LSA out 3-4 degrees or so to delay the IVC to 48 degrees or more. And you can add 6-8 degrees of duration as well and it won't affect anything. The 383 will make power throughout the range - don't cam it like a 346.
So a 228/232 111 is good for all around power for a 346... add as I said and you end up with a 236/240 114. They will drive similarly and have similar curves... just the 383 will be up 30-40rwtq under the curve.
So a 228/232 111 is good for all around power for a 346... add as I said and you end up with a 236/240 114. They will drive similarly and have similar curves... just the 383 will be up 30-40rwtq under the curve.
Oh the anticipation...
07-02-2015, 07:01 PM
#40
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That is a significant increase while still being conservative on the
Durations, I believe you will be very pleased with the results.
Keep us updated, when do you anticipate results?
Durations, I believe you will be very pleased with the results.
Keep us updated, when do you anticipate results?