New Dyno Tune But .....

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Jun 13, 2010 | 06:45 AM

dlk1950

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From: Portage Pa.

New Dyno Tune But .....

Installed LE1 heads and cam 226x230-111 but I ran 12.9s with stock heads and cc 305 and now best 12.80 @ 106.9 W/1.80 60ft . DA was bad,3100 but still think times should be better..can find nothing wrong.

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Jun 13, 2010 | 07:42 AM

Wicked94Z

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looks like you have a 10hp/tq chunk taken out right around 5k rpm

Jun 13, 2010 | 08:05 AM

wrd1972

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From: Central Kentucky

Thats a really ugly torque curve and it should be hitting peak HP a little higher than 6.1K RPM. I have a slightly smaller cam and peak at 6.4K RPM (my graph in sig). Something is wrong here IMHO.

Was the TC locked for the pull?
Are these STP or SAE corrected numbers?

Jun 13, 2010 | 08:14 AM

gregrob

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From: 6,000+ feet

Well, it makes no power below 4500, and when it does make any TQ it peaks then falls off HARD.

What does the tune look like.

What kind of valvetrain does it have in it.

Jun 13, 2010 | 08:30 AM

joelster

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400hp (ok 396) and a 3600stall with some good air will get you damn close to an 11. A DA of 3100 is pretty damn bad though. I'm sure that killed some power.

Jun 13, 2010 | 08:42 AM

dlk1950

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From: Portage Pa.

Quote:

Originally Posted by gregrob

Well, it makes no power below 4500, and when it does make any TQ it peaks then falls off HARD.

What does the tune look like.

What kind of valvetrain does it have in it.

I don't have the papers from the tune, tuner was not there when I picked it up. I just talked to him,he wants to look at in again this week.Top end is all comp cams 1.6rr.push rods,lifters,retainers,locks ect.& LE's springs w.heads. I'm goinng back to track today for points racing.

Jun 13, 2010 | 08:47 AM

dlk1950

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From: Portage Pa.

Quote:

Originally Posted by joelster

400hp (ok 396) and a 3600stall with some good air will get you damn close to an 11. A DA of 3100 is pretty damn bad though. I'm sure that killed some power.

Thats what we thought, was looking for low 12s for class I run. I could see maybe .2 for weather.

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Jun 13, 2010 | 04:59 PM

gregrob

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From: 6,000+ feet

Quote:

Originally Posted by dlk1950

No offense but LE doesn't make springs. That still doesn't really tell us much.

Having good valvetrain components is one thing, and setting it up properly is a whole nother thing.

Could be some of your issue, or not. Wondering what the tune looks like

Jun 13, 2010 | 06:26 PM

#10

dlk1950

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From: Portage Pa.

Quote:

Originally Posted by gregrob

Sorry,I mean the springs LE heads come with,cranes. I had a very good guy set it up. I ran 2 tt's & 4 rounds in today a little better air,but not much, 12.79@106.3,,12.76@106.1,,12.74@109.9,,12.81@106.1 ,,12.72@107.1 & 12.71@107.1..DA 2962 Mechanically car seems sound. Stock TB too small ? Gears ? Tires ? Not surre where to look right now.

Last edited by dlk1950; Jun 13, 2010 at 06:30 PM. Reason: mistake

Jun 13, 2010 | 06:54 PM

#11

MasterTomos

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From: Midwest

I bet a 52mm TB would help out, but I don't think that's the problem at hand on why yur car isn't making the power it should. My money is on the tune, but also have you upgraded fuel injectors?

Jun 13, 2010 | 06:57 PM

#12

speed_demon24

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From: Ocala, FL

I'de get it on a dynojet if you want accurate #'s. If you are truly making 395rwhp in an unlock auto you would be trapping near 120. I trapped 111 with 322rwhp when I was an auto just for reference. As far as the track times they seem on par with similar setups in that d/a.

Jun 13, 2010 | 07:05 PM

#13

BLK,97,T/A,M-6

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I have the same cam with le2 heads. Your peak hp#'s arent too far off, but your torque curve looks terrible. mine looks like the sideview of a kitchen table. I made 405/392 through an m-6 with stock gears. Ran out of fuel pump around 6300.

Jun 13, 2010 | 07:07 PM

#14

dlk1950

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From: Portage Pa.

I'm still on stock injectors & stock TB..we were thinking about them..The tuner I deal with has the superFlow dyno and he's local, I'm going to meet with him tues.and look at the tune first..