LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

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Old Jul 12, 2003 | 08:33 PM
  #1  
SWINGRRR's Avatar
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New #ers.

Car actually did 300.8, but the 293 is the corrected one. Broke up a little on the top end, but the A/F was dead on accoding to the guys there. I dont know didlie about it. Must be an ignition problem somewhere. Gonna put it on Datamaster this week and see. Was 315 RWTQ. Car is 93 Z A4, stock bottom end, stock heads, Moroso CAI, Holley 52MM TB, TB bypass, 24#ers, LT4 HotCam Kit, Jet Hot LT's, Mufflex, Cut-out, and Hooker catback, UD pulley. Chip was done by PCMFORLESS.com. Pretty pleased with it right now. Stock tranny and rear-end.
Old Jul 12, 2003 | 10:04 PM
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dyno

Nice job Dave!
Old Jul 12, 2003 | 10:32 PM
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I'm thinking you should be a little higher. My last dyno with UD pullies, FLP's, GMMG, k+n CAI, 52mm TB yielded 295rwhp/320rwt with me breaking up also on the high end. Car was an M6 FWIW. Definitely check your ignition. Where were you making your peak numbers? Posting your chart would help also. Congrats though, as long as you are happy, thats all that matters!
Brian
Old Jul 12, 2003 | 11:09 PM
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yeah, i think the numbers should be a little higher with that cam in. Still, nice #'s.
Old Jul 13, 2003 | 06:21 AM
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I will try to get the graphes up in a couple of days. I am going home from work till Thursday.
I think the numbers could have been a little higher, but it was hotter than all get out. Seemed everyone that went had REAL low numbers.
Old Jul 13, 2003 | 05:43 PM
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Originally posted by jasons93z
yeah, i think the numbers should be a little higher with that cam in. Still, nice #'s.
I Agree, they should be higher, My 93 A4 dyno'd @ 290 with only Lt4 Hotcam kit and Borla exhaust. Since then I put on coated LTs and tuning so I'm expect 340'ish...
Old Jul 13, 2003 | 05:56 PM
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If that was a mustang dyno, then awesome numbers. If it was a dynojet, then very good numbers. As long as you are happy with it and the car drives fine, that is all that matters man. Sometimes numbers don't mean anything.
Old Jul 13, 2003 | 06:36 PM
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"""""""Actually ** there is a correction factor for heat and humidity. SAE corrected #'s are corrected to 80 degrees and like 50% humidity, give a take a few degrees and %. Their computer was messing up yesterday and giving no correction factor.""""""

This was posted by our club VP and one of the guys setting the day up. I am not trying to start a war, just saying that I think the number should be higher also, we all do, but thier computer on the dyno was messing up. Everyone that went had lower numbers than expected. A certin LS1 Dynoed in Altanta in May did 299. He fixed his computer, random misfires, and added MAC shorty's, OFR pipe and a tune and only gained 2 RWHP. I am trying to get someone with the club to investigate more about "Thier Computer Problem" since we paid money, and this stuff aint cheap.
Old Jul 15, 2003 | 08:37 PM
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I got word today from the VP that some of the numbers were off. Mine should have been around 321RWHP. He said the dyno guy said that they are having to have a tech come out and check the dyno. It was factoring max temp and max humidity.

Scott- I think this goes for you also, since you went before me. John said that Mike's, David's, and his were off for sure.
Old Jul 15, 2003 | 08:43 PM
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Re: New #ers.

Originally posted by SWINGRRR
Car actually did 300.8, but the 293 is the corrected one. Broke up a little on the top end, but the A/F was dead on accoding to the guys there. I dont know didlie about it. Must be an ignition problem somewhere. Gonna put it on Datamaster this week and see. Was 315 RWTQ. Car is 93 Z A4, stock bottom end, stock heads, Moroso CAI, Holley 52MM TB, TB bypass, 24#ers, LT4 HotCam Kit, Jet Hot LT's, Mufflex, Cut-out, and Hooker catback, UD pulley. Chip was done by PCMFORLESS.com. Pretty pleased with it right now. Stock tranny and rear-end.
What did the Horsepower peak at? What rpm?
Old Jul 15, 2003 | 08:46 PM
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Hp was looks to be about 5400rpm. The TQ was flat all the was out to about 4800 then took a nose dive.




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