New dyno numbers on the 383 ls6 miata
08-07-2006, 05:43 PM
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New dyno numbers on the 383 ls6 miata Old numbers are 384/382rwhp/tq. New numbers are 423/434rwhp/rwtq!!!! Same caurve as before, but everything is 40 more rwhp and 50 more rwtq everywhere else. I had Jeff Creech from Carolina Auto Master do the tuning. He has been also on the show Pinks too. Did a nice job with the tune and a great guy to talk car stuff with. I'll post the dyno sheet later tonight. I am not at the house!!!!!
08-07-2006, 06:25 PM
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Originally Posted by turbotacoma
Old numbers are 384/382rwhp/tq. New numbers are 423/434rwhp/rwtq!!!! Same caurve as before, but everything is 40 more rwhp and 50 more rwtq everywhere else. I had Jeff Creech from Carolina Auto Master do the tuning. He has been also on the show Pinks too. Did a nice job with the tune and a great guy to talk car stuff with. I'll post the dyno sheet later tonight. I am not at the house!!!!!
I made 489rwhp with a small cam in my 383.
08-07-2006, 11:24 PM
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Congrats on the tune!! VERY glad to hear how good Jeff did on yours because he is supposed to have my 'puter done this week too. Unfortunately, I don't have my engine in the garage yet much less in the car, so this just makes me more envious!!
08-08-2006, 01:16 PM
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Originally Posted by Payne
What heads/cam/headers are in the car? That seems really realy really low for a 383.
I made 489rwhp with a small cam in my 383.
I made 489rwhp with a small cam in my 383.
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08-08-2006, 02:47 PM
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O.k. Guys, I know I could of made more power with another cam. 
I stayed with this one, because I like the feel of it for everyday use as a daily driver, it has good power for road racing (Not so hard on valve springs), I needed the torque to get this thing moving, and I didn't have the money for a new cam at the time. I had some medical expenses etc. I figured I would see what see would do. A cam swap is in the future. But, I want to get some miles on the car, and get it dailed in for some road course use. Again, I also has a few reasons not to put a cam in it....or concerns .
1. I made my own 4-2-1 headers. They work for my appilication, becuase everything is tight. If I had the f-boby or vette headers, I know my numbers would be better. So my exhaust is somewhat my limiting factor, more like a mid length header.
2. I need a larger air filter and some fresh air. Another reason the numbers are alittle low. It is tight under the miata hood. I will be finding ways to help me out there to. The filter being off alone helped pick up 5hp+ and 5 lbfttq+.
3. Even though the car is light at 2650lbs. I am trying to get his thing to pull as soon as I can, due to the gear spacing. I am running a T-56 trans with a 3.27:1 rear end and 24.5" tall tires. 1st gear 0-57mph, 2nd gear 57-85mph, 3rd gear 85-110mph, 4th gear 110-140mph, and 5th gear 140-189mph...if she can pull it. The gearing is wide, so If I had a mid to top end cam it would hurt me more then help me, because it keeps me out of power band.
When I get out of 1st at 6k....it puts me at 4250rpm at my peak torque zone, of 430 plus torque and pulls to 6k, shift again and then I am at 4400rpm....430plus torque again, at my peak torque. This is good for drag racing, put all of the power between though to marks. Great......for drag racing, but not for road racing. I wanted it to pull the car without any issues coming off the corners when below my peak torque curve. I have 355rwtq from 2000rpm to 6200 rpm. The old 346 setup doesn't make that torque until 3500rpm. 1500rpm difference.
4. My point is yes, you all are right about a different cam putting down better upper end numbers. I agree, but my intended use was different then most. I went for the mid range, due to gearing and the style of driving I wanted to do. And my conversion also is not as friendly to full length header and induction mods. Compromises of my conversion and my skill to make it all work.
Again, I am not unhappy with my numbers. In fact, I am pleased. The car drives almost stockish, very user friendly. No cam surge. Good mileage. A sleeper, do to very little over lap coming from the exhaust. I am running 4 mufflers to keep it from being to loud. And it pulls harder then the number look. TORQUE!!!! And my mileage is great for what it is......a home built hybrid do it yourselfer conversion.
Thanks Guys
I will try to post a good video with the car flying.
I stayed with this one, because I like the feel of it for everyday use as a daily driver, it has good power for road racing (Not so hard on valve springs), I needed the torque to get this thing moving, and I didn't have the money for a new cam at the time. I had some medical expenses etc. I figured I would see what see would do. A cam swap is in the future. But, I want to get some miles on the car, and get it dailed in for some road course use. Again, I also has a few reasons not to put a cam in it....or concerns .1. I made my own 4-2-1 headers. They work for my appilication, becuase everything is tight. If I had the f-boby or vette headers, I know my numbers would be better. So my exhaust is somewhat my limiting factor, more like a mid length header.
2. I need a larger air filter and some fresh air. Another reason the numbers are alittle low. It is tight under the miata hood. I will be finding ways to help me out there to. The filter being off alone helped pick up 5hp+ and 5 lbfttq+.
3. Even though the car is light at 2650lbs. I am trying to get his thing to pull as soon as I can, due to the gear spacing. I am running a T-56 trans with a 3.27:1 rear end and 24.5" tall tires. 1st gear 0-57mph, 2nd gear 57-85mph, 3rd gear 85-110mph, 4th gear 110-140mph, and 5th gear 140-189mph...if she can pull it. The gearing is wide, so If I had a mid to top end cam it would hurt me more then help me, because it keeps me out of power band.
When I get out of 1st at 6k....it puts me at 4250rpm at my peak torque zone, of 430 plus torque and pulls to 6k, shift again and then I am at 4400rpm....430plus torque again, at my peak torque. This is good for drag racing, put all of the power between though to marks. Great......for drag racing, but not for road racing. I wanted it to pull the car without any issues coming off the corners when below my peak torque curve. I have 355rwtq from 2000rpm to 6200 rpm. The old 346 setup doesn't make that torque until 3500rpm. 1500rpm difference.
4. My point is yes, you all are right about a different cam putting down better upper end numbers. I agree, but my intended use was different then most. I went for the mid range, due to gearing and the style of driving I wanted to do. And my conversion also is not as friendly to full length header and induction mods. Compromises of my conversion and my skill to make it all work.
Again, I am not unhappy with my numbers. In fact, I am pleased. The car drives almost stockish, very user friendly. No cam surge. Good mileage. A sleeper, do to very little over lap coming from the exhaust. I am running 4 mufflers to keep it from being to loud. And it pulls harder then the number look. TORQUE!!!! And my mileage is great for what it is......a home built hybrid do it yourselfer conversion.
Thanks Guys
I will try to post a good video with the car flying.
08-10-2006, 07:07 AM
#12
very nice indeed 
would love to see it in action
what have you done to the breaks and suspension???
the T56 is a BIG lump of gear box! what did you have to do to get it to fit??
thanks CHirs.
PS. you gota build site or anything??
would love to see it in action what have you done to the breaks and suspension???
the T56 is a BIG lump of gear box! what did you have to do to get it to fit??
thanks CHirs.
PS. you gota build site or anything??
