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April 7th, 2008, 11:57 AM
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Dyno tomorrow, guess my HP/TQ
So, I've got an appointment at the dyno tomorrow just to see what the old brick can put down before I start going to the track this season.
Here are the "meaningful" (I guess?) mods you might need to know about. Motor and transmission are basically stock rebuilds with low miles. TH 3" Downpipe, K&N Filter, 3" MAF Pipe, Precision PT54 Turbo w/ HD Actuator Big Neck Intercooler, EBay Catalytic Converter, ATR SS Crossflow Exhaust, QTP Electric Exhaust Cut-Out (partially open) MSD 50lb Injectors, Adjustable FPR (about 46psi line off), Walbro 340 Fuel Pump w/ Casper’s Hotwire Kit Hypertech 160* Thermostat, Comp Cams 980 Valve Springs Vigilante 9 ˝” L/U/Single Disk/3400 Stall Torque Converter 110 Gas TurboTweak 110 Octane Race Chip (27*/29*), Converter Locked at WOT Here's my tune (May be slightly odd, but I like it)- WOT + 20.3% fuel in all gears WOT 1/2 + 0.7* Timing WOT 3/4 + 1.1* Timing Boost stays right around 25lbs o2s around 780-800, showing absolutely zero knock Take your guesses, I'll post numbers tomorrow.
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'87 Limited T     
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April 7th, 2008, 01:41 PM
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You didn't say what brand dyno...
Assuming a Dynojet that is much more loose with it's numbers IMHO.... I'd say.... 480 hp and 540 ft-lbs
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1987 Buick GN Currently getting freshened up.... Old Parts: 60# injectors, 3" TH DP with test pipe and hooker cat back, Walbro 340 pump, Razor's Alky, TT Chip, 3-1/2" MAF pipe with Big Mouth CA Kit and LS1 MAF, Translator.... yada yada New parts: Ported heads with stainless valves, RJC FMIC, T&D 1.65 roller rockers, Comp XR2 Hydraulic Roller 210/215@.050 .549/.549 (with 1.65 rockers), champion ported intake, Hemco stock appearing doghouse, PT70 P-trim turbo with H comp. housing, N/A109 block bored .030 over with head studs, main studs #2 and #3 billet main caps, cometics, TRW forged .030 over slugs with hastings moly rings. New times soon. (1/8) 8.002 @ 86 mph 12.650 @ 106 mph with a 1.71 60' time with the stock turbo/dutt neck intercooler (best mph was 107.69 mph)
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April 7th, 2008, 07:08 PM
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Sorry, it is a dynojet.
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'87 Limited T
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April 7th, 2008, 07:22 PM
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Why electric cut-out "partially" open?
Sounds like a tried and true high/mid 11 second combo...so 505 hp 565 ft lb tq.
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89 TTA -first and original owner, 34k miles. www.my89turbotransam.com BB CPT-61, THDP, 60# inj., Electronic dump pipe, SMC Alcy Inj. stock exhaust from cat back. 
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April 7th, 2008, 07:38 PM
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'87 Limited T
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April 7th, 2008, 08:45 PM
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IMHO... it really doersn't matter... as long as you use it as a tuning tool... and use the same tool each time... that is the only way you can be sure if you have made more power.... In the grand scheme... the track is the best dyno anyway... but you can make more changes in a given period of time and test them on a dyno.... so they do hold value IMHO... for tuning. Good luck... and let us know what she lays down...
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1987 Buick GN Currently getting freshened up.... Old Parts: 60# injectors, 3" TH DP with test pipe and hooker cat back, Walbro 340 pump, Razor's Alky, TT Chip, 3-1/2" MAF pipe with Big Mouth CA Kit and LS1 MAF, Translator.... yada yada New parts: Ported heads with stainless valves, RJC FMIC, T&D 1.65 roller rockers, Comp XR2 Hydraulic Roller 210/215@.050 .549/.549 (with 1.65 rockers), champion ported intake, Hemco stock appearing doghouse, PT70 P-trim turbo with H comp. housing, N/A109 block bored .030 over with head studs, main studs #2 and #3 billet main caps, cometics, TRW forged .030 over slugs with hastings moly rings. New times soon. (1/8) 8.002 @ 86 mph 12.650 @ 106 mph with a 1.71 60' time with the stock turbo/dutt neck intercooler (best mph was 107.69 mph)
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April 7th, 2008, 09:06 PM
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Can't you get the 20 yr old antique licensing to avoid emissions testing? I run mine open when racing, it does creep but only in OD, really bad. have to close it completely if I try a top end run, then it levels out at 23psi.
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89 TTA -first and original owner, 34k miles. www.my89turbotransam.com BB CPT-61, THDP, 60# inj., Electronic dump pipe, SMC Alcy Inj. stock exhaust from cat back.
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April 7th, 2008, 09:18 PM
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Hey Nick...
Where is the dyno your using? I'm curious because I'm not too far from Canton. Do you frequent Riverstone? Thanks Michael
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EPH 2:8-9 “For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast.”  85 WH1 T-type converted to intercooled. Champion ported intake and doghouse, pplate, Accufab 65mm, ported GN1s , 55s, 212-212 Comp roller, .040 TRW, RJC pulleys, girdle, Precision stock location, Precision 67 H cover turbo , Precision 3000 stall, Eaton, LS1 brakes, Bilsteins, Belltechs, Lonnie Diers tranny, Beehive springs of Hendricks Racing prepped by Scott Schumacher. Best time 15.33 @ 88mph in reverse! Finally building a Stage II... goal is to finish it and still be happily married to the same wife 
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April 7th, 2008, 09:39 PM
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'87 Limited T
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April 7th, 2008, 09:44 PM
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'87 Limited T
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April 7th, 2008, 10:29 PM
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With the converter locked and 11.3:1 a/f:
512hp, 598t/lbs Those numbers you told us about adding fuel dont tell us much since we dont know the baseline or the a/f at baseline. You should get a re-burn to get your fueling closer to baseline since you are adding 20% in case the adjustment is lost unknowingly and you floor it. It would be a bad lean out condition. We also assume you are going to extract as much as possible at 25 psi. I think you will be rich if the O2 is .780-.800. You need an egt or wideband readout. I picked up 39hp at the wheels with nothing but a lean out from 10.3 to 11.1. That was on a Mustang dyno also.
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Blue GN: Old combo 559whp/706wtq. New buildup to come with race ported GN 1 heads and intake  . Black GN:Stock 147k shortblock except cam  ,KB 70 mm TB and plenum, ported irons 1.77in 1.5ex, RJC head gaskets, ported stock intake, 212-212 comp roller, 1.65 T&D's, RJC powerplate, 1" plenum spacer, 83 lb/hr injectors, double pumper, FAST XFI, G-Body FMIC, welded ported stock manifolds, 3.5 dp, CPT 66BB GTQ, PAC dual nozzle alky injection, Dusty PTC 9.5", 200 4-R by me with billet shafted forward drum, billet input, billet ring gear and planet. 8.5 rear with Auburn, 28 spline Moser axles, and LPW girdle. 10.29@133.46mph .Time with old combo (stock ecm, p-trim turbo, and loose converter) 10.88@126mph. Stage II coming soon .
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April 8th, 2008, 11:00 AM
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Well, just got home. I worked on leaning it out a good bit before going this morning. Bumped the WOT fuel down about 23% total from the craziness I was at and was still having o2s of about 790 with the FPR at 42psi line off. Ended up closing the cut-out also.
First run was right around the pre-set WOT fuel for the chip, second was minus about 4-5% I believe. We also hooked up a wideband on the last run and it was pretty obvious it's pig rich although I don't remember the exact number. One question, how can I lock the transmission in gear the next time I go so that we're not fighting a downshift? I must say I'm disappointed in the numbers, but with it as rich as it was I can't expect too much. I understand the key to power with these cars is tuning, tuning, tuning...and I just haven't done much to it yet. At least now I have a baseline I can work from as far as fuel/timing/boost goes. Lots of trips to the track in the next few months for tuning and I'll try the dyno again with this same set-up, just tuned MUCH better. Anybody selling a Power Logger cheap?
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'87 Limited T
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April 8th, 2008, 11:06 AM
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Don't be too disappointed... get a wideband... and a good datalogger....and get her dialed in... get it to sub 11.50's.... and you will be in the upper 400 hp range to the tires.... nothing shabby about that...
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1987 Buick GN Currently getting freshened up.... Old Parts: 60# injectors, 3" TH DP with test pipe and hooker cat back, Walbro 340 pump, Razor's Alky, TT Chip, 3-1/2" MAF pipe with Big Mouth CA Kit and LS1 MAF, Translator.... yada yada New parts: Ported heads with stainless valves, RJC FMIC, T&D 1.65 roller rockers, Comp XR2 Hydraulic Roller 210/215@.050 .549/.549 (with 1.65 rockers), champion ported intake, Hemco stock appearing doghouse, PT70 P-trim turbo with H comp. housing, N/A109 block bored .030 over with head studs, main studs #2 and #3 billet main caps, cometics, TRW forged .030 over slugs with hastings moly rings. New times soon. (1/8) 8.002 @ 86 mph 12.650 @ 106 mph with a 1.71 60' time with the stock turbo/dutt neck intercooler (best mph was 107.69 mph)
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April 9th, 2008, 07:42 AM
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I'll be at one of the local 1/8 mile tracks this Sunday trying to work out the bugs and tuning with the ScanMaster/TT chip. I'll start out with the tune I ran on the dyno and go from there to see what I can pick up, will let ya know. Depending on how the first run goes I may reset the chip back to the presets, see if it improves..and then begin adjusting fuel from there.
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'87 Limited T Last edited by Nick McCardle : April 9th, 2008 at 07:54 AM.
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April 9th, 2008, 08:17 AM
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IMHO... the scanmaster is a decent tuning tool.... however IMHO you really need a directscan or powerlogger.... the framerates are so much faster you can truly get a much more accurate picture of the run. If you don't have access to borrow one of the above... and you are about to purchase one... I recommend the powerlogger....It would also log the wideband... where DS won't....
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1987 Buick GN Currently getting freshened up.... Old Parts: 60# injectors, 3" TH DP with test pipe and hooker cat back, Walbro 340 pump, Razor's Alky, TT Chip, 3-1/2" MAF pipe with Big Mouth CA Kit and LS1 MAF, Translator.... yada yada New parts: Ported heads with stainless valves, RJC FMIC, T&D 1.65 roller rockers, Comp XR2 Hydraulic Roller 210/215@.050 .549/.549 (with 1.65 rockers), champion ported intake, Hemco stock appearing doghouse, PT70 P-trim turbo with H comp. housing, N/A109 block bored .030 over with head studs, main studs #2 and #3 billet main caps, cometics, TRW forged .030 over slugs with hastings moly rings. New times soon. (1/8) 8.002 @ 86 mph 12.650 @ 106 mph with a 1.71 60' time with the stock turbo/dutt neck intercooler (best mph was 107.69 mph)
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April 9th, 2008, 08:26 AM
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'87 Limited T
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April 9th, 2008, 09:29 AM
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Wish I saw this post a few days earlier. I am 2 exits from Top Speed and know Trey and Doug really well.
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 '86 GN- GT72Q, GN1 heads, Champion intake, 70mm throttle body, 212/212, .030 over, Oliver rods, Diamond pistons, Forged crank, a1000 fuel pump, 83lbs injectors, Champion fuel rail, Razors dual nozzle alky, FAST XFI, Accufab AFPR, RJC megacooler, th400 w/break, 3500 stall, Ford 9" w/locker, Metco uppers and lowers, dual air bags, and still don't have the car in my possesion- 1 year 10 months 
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April 9th, 2008, 10:25 PM
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You cant avoid kick down to 2nd under 61 mph with the stock BR vb calibration. Thats why you need to nail it and lock the converter as its spooled. Your torque should be higher than your hp. What was the converter slip %? Why didnt the dyno owner give you the a/f numbers? .790 was around 10.2-10.3 for me when i last checked but the narrow O2's are crap for tuning feedback when there are widebands and EGT gauges available. I use an LM1 on my car and many others for easy a/f input.
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Blue GN: Old combo 559whp/706wtq. New buildup to come with race ported GN 1 heads and intake . Black GN:Stock 147k shortblock except cam ,KB 70 mm TB and plenum, ported irons 1.77in 1.5ex, RJC head gaskets, ported stock intake, 212-212 comp roller, 1.65 T&D's, RJC powerplate, 1" plenum spacer, 83 lb/hr injectors, double pumper, FAST XFI, G-Body FMIC, welded ported stock manifolds, 3.5 dp, CPT 66BB GTQ, PAC dual nozzle alky injection, Dusty PTC 9.5", 200 4-R by me with billet shafted forward drum, billet input, billet ring gear and planet. 8.5 rear with Auburn, 28 spline Moser axles, and LPW girdle. 10.29@133.46mph .Time with old combo (stock ecm, p-trim turbo, and loose converter) 10.88@126mph. Stage II coming soon .
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