383 stroker time
What's your rwhp? What's your setup consist of? And I don't know why buy I really haven't seen a well performing ls 383.Yourrs seems on par with the others I have seen. And I agree with the stall comment and depending on cam it should at least 3600 imo
Like HCI2000ss is saying what was the DA , poor da can easily rob a couple mph as well. Drag Times da calculator doesn't list that track (us43) but I grabbed the same time from your time slip(7:00) , same day (9/4/15) at another track in TN and it was 88* and the da was terrible 3100 feet.....
you also list an s60 rear end which is an awesome upgrade but has more parasitic loss than a 10 bolt but when you get your 60 foots in the sub 1.5 range its nice to have that durability.
you also mention 373's , been too many years since I had my 373 geared car to the track (stock internals full weight 1.8 60 ft 7.7@90 in 1/8 12.1 @112 1/4 mile) but I imagine your crossing the traps in 2nd ? at what rpm ? to optimize for 8th it should be at or close to redline crossing the traps.
Last edited by murphinator; Sep 5, 2015 at 08:03 PM.
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From: Muscle Shoals, AL
85mm maf w/ lid
242/248 low .600 lift 112 lsa (could it be overcammed?)
PRC stage 1 243 heads
419 rwhp 400tq (Could be the weakest 383 in history?)
Last edited by 6SSPEED; Sep 5, 2015 at 08:50 PM.
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Verdad Gallardo Well that DA and humidity are hurting you for sure. I see you dynoed 419 rwhp but I wouldn't worry about that number....it's just a number. Honestly better track conditions along with a better stall would make a HUGE difference. As long as your tune is good of couse
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The motor pulls to around 6300 then starts to slowly fall off.
Not chasing a dyno number. Chasing 10's n/a (6.80's 1/8th)
Agreed. That dyno reading is very low which agrees with your MPH. Have a wideband? Verify proper AFR through the pull and verify proper timing either with your plugs or an obd2 scanner, or hptuners. I find it hard to believe the car runs out of steam at 6300 rpm with that camshaft. I suspect the stall is to blame for your crappy MPH if everything else is in check.
checking afr with a wideband during a pull would be great as mentioned above and checking fuel pressure would as well to see if fuel pressure is dropping off , that cam should want to pull hard up there not drop off.
Do you have a tuner & wideband ?
Do you have a tuner & wideband ?
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Will also check with tuner about fuel pressure at wot.
Thanks for the responses guys, keep it commin
I am still going to be some blame on the stall as of right now if you were going to change one thing, this would be it. 3600-4200, depending on who's stall it is, call them because I am ASSUMING that you had that stall before the 383.
But the numbers seem low imo and only pulling to 6300 is another thing. Have you checked your plugs lately? Vacuum leaks? What size pump do you have? I too would look into the fuel pressure during a data log down the track.
But the numbers seem low imo and only pulling to 6300 is another thing. Have you checked your plugs lately? Vacuum leaks? What size pump do you have? I too would look into the fuel pressure during a data log down the track.
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I am still going to be some blame on the stall as of right now if you were going to change one thing, this would be it. 3600-4200, depending on who's stall it is, call them because I am ASSUMING that you had that stall before the 383.
But the numbers seem low imo and only pulling to 6300 is another thing. Have you checked your plugs lately? Vacuum leaks? What size pump do you have? I too would look into the fuel pressure during a data log down the track.
But the numbers seem low imo and only pulling to 6300 is another thing. Have you checked your plugs lately? Vacuum leaks? What size pump do you have? I too would look into the fuel pressure during a data log down the track.
I understand when I changed the cam/stall that kinda makes the comparison apples to oranges though.
Pump is stock with 112k miles on it. Injectors are 42 pound and are at 70% duty cycle.
Last edited by 6SSPEED; Sep 6, 2015 at 12:29 PM.
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are you on all 8 cylinders? spray each primary with water and see if steam comes out out of each header primary.. it would seem youre best shifting at 6k and i find that hard to believe with that cam.