402 dyno results
08-03-2011, 09:11 PM
#1
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402 dyno results I didn't think my results were that bad until I started reading some of the other results similar to my setup. I think I'm way low.
What should this be making and what could be wrong. Car seems to run great and runs 11.13 @123 in 1/4.
Dynoed 450 RWHP 450 RWT
F body
402 CI LS2
CR - 11.3 to 1
AFR 225 CNC ported 65cc
yella terra rockers
Fast 92 intake ported
NW 92 TB
42 lb injectors
Ractronics fuel pump and hot wire
Cam - 240-244, 631 631 with 113LSA
1/78 Kooks w ORY 3"
Magnaflow cat back
FLT 4L60 l
Vig 3200 converter
12 bolt 390 gears Had 342 10 bolt when dynoed
What should this be making and what could be wrong. Car seems to run great and runs 11.13 @123 in 1/4.
Dynoed 450 RWHP 450 RWT
F body
402 CI LS2
CR - 11.3 to 1
AFR 225 CNC ported 65cc
yella terra rockers
Fast 92 intake ported
NW 92 TB
42 lb injectors
Ractronics fuel pump and hot wire
Cam - 240-244, 631 631 with 113LSA
1/78 Kooks w ORY 3"
Magnaflow cat back
FLT 4L60 l
Vig 3200 converter
12 bolt 390 gears Had 342 10 bolt when dynoed
08-03-2011, 10:26 PM
#2
Seems low to me. I have seen that combo do 480whp on a stock cube ls1 before. You should be at around 520whp or so. Was it tuned on a mustang dyno? Those read about 8% low. Check everything including the tune, plugs, wires, fuel filter, compression, etc. It sounds like something is wrong.
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FormulaDad1216 (03-06-2024)
08-04-2011, 05:34 AM
#4
Launching!
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Fuel filter is new, plugs aand wires are good, compression is fine, the tune I have no idea but it was done by compitant tuner. I do have some cold start idle issues; car surges until it warms up. I guess I should take it to another tuner to get it checked out. I will try and post the dyno sheet later
08-04-2011, 07:08 AM
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MAF / SD? Filter? is there a Chriss1313 or a SLP style ram air kit under the filter? KPa / AF on the high RPM's? Weather conditions when dynoed (even though it should be corrected)?
Your cold start issues are a PITA, mine's good after it's warmed and driven a few blocks... it's hard to get the idle/cold start part of the tune worked out, the tuner only has a little bit of time to adjust on the cold block.
Converter looks a little tight for that cam? Does it try to push through the brakes when stopped at idle?
I have a similar combo, (#'s in sig) I have alot smaller cam 232/234, but I have a little better head - first night out ran a 11.19 spinning off the line, you should have a bit more HP/TQ with that cam 500-540'ish numbers, MS3 cams are a tad bit smaller than yours usally hit 500rwhp pretty regularly in 402-408's A4 S60/9".
Your cold start issues are a PITA, mine's good after it's warmed and driven a few blocks... it's hard to get the idle/cold start part of the tune worked out, the tuner only has a little bit of time to adjust on the cold block.
Converter looks a little tight for that cam? Does it try to push through the brakes when stopped at idle?
I have a similar combo, (#'s in sig) I have alot smaller cam 232/234, but I have a little better head - first night out ran a 11.19 spinning off the line, you should have a bit more HP/TQ with that cam 500-540'ish numbers, MS3 cams are a tad bit smaller than yours usally hit 500rwhp pretty regularly in 402-408's A4 S60/9".
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08-04-2011, 09:30 AM
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MAF / SD? Filter? is there a Chriss1313 or a SLP style ram air kit under the filter? KPa / AF on the high RPM's? Weather conditions when dynoed (even though it should be corrected)?
Your cold start issues are a PITA, mine's good after it's warmed and driven a few blocks... it's hard to get the idle/cold start part of the tune worked out, the tuner only has a little bit of time to adjust on the cold block.
Converter looks a little tight for that cam? Does it try to push through the brakes when stopped at idle?
I have a similar combo, (#'s in sig) I have alot smaller cam 232/234, but I have a little better head - first night out ran a 11.19 spinning off the line, you should have a bit more HP/TQ with that cam 500-540'ish numbers, MS3 cams are a tad bit smaller than yours usally hit 500rwhp pretty regularly in 402-408's A4 S60/9".
Your cold start issues are a PITA, mine's good after it's warmed and driven a few blocks... it's hard to get the idle/cold start part of the tune worked out, the tuner only has a little bit of time to adjust on the cold block.
Converter looks a little tight for that cam? Does it try to push through the brakes when stopped at idle?
I have a similar combo, (#'s in sig) I have alot smaller cam 232/234, but I have a little better head - first night out ran a 11.19 spinning off the line, you should have a bit more HP/TQ with that cam 500-540'ish numbers, MS3 cams are a tad bit smaller than yours usally hit 500rwhp pretty regularly in 402-408's A4 S60/9".
08-04-2011, 09:39 AM
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I didn't think my results were that bad until I started reading some of the other results similar to my setup. I think I'm way low.
What should this be making and what could be wrong. Car seems to run great and runs 11.13 @123 in 1/4.
Dynoed 450 RWHP 450 RWT
F body
402 CI LS2
CR - 11.3 to 1
AFR 225 CNC ported 65cc
yella terra rockers
Fast 92 intake ported
NW 92 TB
42 lb injectors
Ractronics fuel pump and hot wire
Cam - 240-244, 631 631 with 113LSA
1/78 Kooks w ORY 3"
Magnaflow cat back
FLT 4L60 l
Vig 3200 converter
12 bolt 390 gears Had 342 10 bolt when dynoed
What should this be making and what could be wrong. Car seems to run great and runs 11.13 @123 in 1/4.
Dynoed 450 RWHP 450 RWT
F body
402 CI LS2
CR - 11.3 to 1
AFR 225 CNC ported 65cc
yella terra rockers
Fast 92 intake ported
NW 92 TB
42 lb injectors
Ractronics fuel pump and hot wire
Cam - 240-244, 631 631 with 113LSA
1/78 Kooks w ORY 3"
Magnaflow cat back
FLT 4L60 l
Vig 3200 converter
12 bolt 390 gears Had 342 10 bolt when dynoed
08-04-2011, 10:04 AM
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Just as a comparison ... SDPC 402, 508 rwhp/497 rwt with the stock 10-bolt & 4.10's and much smaller heads. Do you have flow #'s. I have not dyno'd it with the S60, but I suspect it's out of the 500's. Most mods are in my signature ... all the mods are in my album.
08-04-2011, 12:24 PM
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My plan was to install the nitrous outlet f body specific nitrous kit and take it to another tuner and see if they can get anymore out of it NA. Then tune it for the nitrous.
08-05-2011, 03:48 AM
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Take a look at my first post, if you answer the questions I put up, it would help all of us help you. That's a big cam that needs to suck air in, you have the headers to let it out. You maybe able to simply open up the flow comeing into the engine.
I hate to be a big cam basher... but I agree, just didn't want to be the first to say it. Big cam's don't always put out big numbers, now if the OP had Trick Flow 235 heads that would change the situation.
