GS340 Dyno results
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From: Manassas VA
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St. Jude Donor '14
GS340 Dyno results
SDPC 10.4 compression 383, SDPC/LPE Stage III heads, GM 847 cam, ASM 58 TB, LPE LT4 intake, 1000 CFM maf, MSD blaster coil, Dynaspark, MSD wires, cold air intake, NGK plugs, EM long tubes, 3inch cats, and 3inch power effects, and x-pipe.
- first run is mail order tune. You can see where the power started breaking up because of lean AF ratio.
- second run is John's (woodbridge dynotech) tune from April with 2.5 inch exhaust.
- last run is John's tune from Friday with 3 inch exhaust.
- first run is mail order tune. You can see where the power started breaking up because of lean AF ratio.
- second run is John's (woodbridge dynotech) tune from April with 2.5 inch exhaust.
- last run is John's tune from Friday with 3 inch exhaust.
Thread Starter
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by LT4BUD
Looking good......
Wonder how much of the gain was from 3 inch and how much from the tune???
Seems to be an endorsement of 3 inch exhaust system.....
Wonder how much of the gain was from 3 inch and how much from the tune???
Seems to be an endorsement of 3 inch exhaust system.....
Thread Starter
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by jerkyboy
nice numbers
Is john back full time now? If I get mine back, I'm hoping to make that dyno day!
Is john back full time now? If I get mine back, I'm hoping to make that dyno day!
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Thread Starter
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by FD2BLK
Looks like it is making good power,
I also have a fairly low CR (10.7:1) but a little less cam (CC 306).
I also have a fairly low CR (10.7:1) but a little less cam (CC 306).
would you mind e-mailing or posting your dyno sheet. I would like to see the curve with the 306.
thanks.
robert
Safety Car
Joined: Dec 2002
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From: Charleston SC
Originally Posted by Bluewasp
would you mind e-mailing or posting your dyno sheet. I would like to see the curve with the 306.
thanks.
robert
thanks.
robert
Here you go, I had a dead miss at 3700 RPM that is the downward spike and I found an exhaust leak a week or so after tuning so I think there is another 5-10 left in her with another tune but before I tune again i want to try a BB resinator instead of the stocker to try freeing up the exhaust a little.
Melting Slicks
Joined: May 2002
Posts: 2,670
Likes: 4
From: Severna Park MD
Nice numbers
Nice looking curve there, Rob.
Your last tq and HP curves have the shape of mine with the Hotcam and 3 inch exhaust, but yours goes way higher on the scale. I'll never see that 400+ with mine. It is interesting that with the bigger 847 cam and Stage III heads, your HP curve begins to drop off at about the same rpm as mine does with milder setup on both.
Your last tq and HP curves have the shape of mine with the Hotcam and 3 inch exhaust, but yours goes way higher on the scale. I'll never see that 400+ with mine. It is interesting that with the bigger 847 cam and Stage III heads, your HP curve begins to drop off at about the same rpm as mine does with milder setup on both.
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by BrianCunningham
Proves you can run cats, and make great power. 
I figure there are a few ponies in the cats but 407 is enough for now! 
Thread Starter
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by FD2BLK
Here you go, I had a dead miss at 3700 RPM that is the downward spike and I found an exhaust leak a week or so after tuning so I think there is another 5-10 left in her with another tune but before I tune again i want to try a BB resinator instead of the stocker to try freeing up the exhaust a little.
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by FELNGR8
Nice looking curve there, Rob.
Your last tq and HP curves have the shape of mine with the Hotcam and 3 inch exhaust, but yours goes way higher on the scale. I'll never see that 400+ with mine. It is interesting that with the bigger 847 cam and Stage III heads, your HP curve begins to drop off at about the same rpm as mine does with milder setup on both.
Your last tq and HP curves have the shape of mine with the Hotcam and 3 inch exhaust, but yours goes way higher on the scale. I'll never see that 400+ with mine. It is interesting that with the bigger 847 cam and Stage III heads, your HP curve begins to drop off at about the same rpm as mine does with milder setup on both.
Have john build you a 383!
You will see a 400+ for sure... Are you still going to the dyno day since the car is out of comission.
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From: Manassas VA
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St. Jude Donor '14
Originally Posted by Ramrod92
Looks pretty good Robert. I'm running the 847 in my 396, but w/worked over LT1 topend. Going on the dyno tomorrow.
Post your results.
