finally dyno'd my 91z
03-11-2012, 07:13 PM
#1
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
finally dyno'd my 91z
well met up with a buddy last night and he said there was goin to be a dyno day for this mustang club he hangs out with. he said they were real chill guys and wouldnt mind so i went. ran my car twice and got exactly the numbers i was expecting. ive been tuning it myself with hptuners and surprised how close i got it. it was funny cause they were all about to leave and then i pulled my car up and they all stayed.
car is 1991 z28
2001 5.3l
2001 4l60e stock stall
3:23 gears
ls1 intake
2002 ls1 cam
28lb injectors
car is 1991 z28
2001 5.3l
2001 4l60e stock stall
3:23 gears
ls1 intake
2002 ls1 cam
28lb injectors
03-11-2012, 08:11 PM
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Car: 91 Firebird
Engine: H/C 6.0 LQ4
Transmission: RPM T-56
Axle/Gears: Moser 12 Bolt w/3.73s
Re: finally dyno'd my 91z
Pretty decent numbers going through the auto. What is your exhaust set up? You have headers or no?
03-11-2012, 09:26 PM
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: finally dyno'd my 91z
2002 manifolds to 2.5" to a 3" y to some whatever flowmaster. i was surprised on my tuning being that is was my first time.
this but without the cat.
this but without the cat.
03-11-2012, 09:29 PM
#5
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Re: finally dyno'd my 91z
over 300rwtq..nice.That 5.3 is putting in work for what it is.Hp is down so Im assuming your not using longtube headers etc..just a basic exhaust.Got any vids of it?
03-11-2012, 11:08 PM
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: finally dyno'd my 91z
ground clearance is a little tight. have to watch goin over speed bumps. i have a set of 02 manifolds.
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03-11-2012, 11:23 PM
#8
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Re: finally dyno'd my 91z
your y pipe looks just like mine but I did dual 2.5 high flow cats right after each manifold and merged it into my 3" pipe.It tucks up a lil better this way since the cats are beside the trans,I dont scrape speed bumps unless Im going too fast over steep bumps.
03-11-2012, 11:37 PM
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: finally dyno'd my 91z
yeah i only really hit them if i go fast and it slams down on them.
03-11-2012, 11:39 PM
#10
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Car: '85 Camaro
Engine: LS1
Transmission: T56
Axle/Gears: 3.73
Re: finally dyno'd my 91z
Not bad numbers at all! You still have room to grow with a LS6 intake, UD pulley, p&p tb, etc.
Keep up the good work
Keep up the good work
03-11-2012, 11:53 PM
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Car: 1987 IROC
Engine: Turbo 293ci 4.8l
Transmission: T56
Re: finally dyno'd my 91z
eh the car has been sold since like november so im not really changing anything. gotta finish my iroc now. hopefully takin it tomorrow or tuesday to my exhaust shop to finally get the hot side done.
03-12-2012, 12:37 AM
#12
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Re: finally dyno'd my 91z
This is my half a$$ed dual catted y pipe.They are magnaflow high flow cats,wish i had a pic when they were on the car.Im going to have a new pipe made up with the cats for a smoother transition and see if i can tuck the passenger side cat up maybe a 1/4 inch so it wont scrape anymore.
03-12-2012, 04:02 AM
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Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: finally dyno'd my 91z
not bad numbers. get the A/F ratios a bit richer and you should pick up some power. typically, 12.7:1 is ideal. but for the newer stuff, it may be different.
03-12-2012, 06:30 AM
#14
Re: finally dyno'd my 91z
correct, engine tuning and theory dictates that ~12.6 is max torque on an N/A gasoline engine. Anything richer and its a downward slope for power/tq and unnecessary richness. Anything leaner and you might run into issues with knock.
03-12-2012, 06:43 AM
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Car: 1998 Trans/Am, 1989 RS Camaro
Engine: LS1, LQ9 6.0
Transmission: 4L60E, 4L60E
Axle/Gears: 2.73, 2.73
Re: finally dyno'd my 91z
Well im happy to see those numbers.. I am runniing the truck cam tho.
08-05-2012, 01:22 PM
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Car: 2002 GS300 Sport Design
Engine: 3.0L 2JZGE
Transmission: 5-Speed Shiftable Automatic
Re: finally dyno'd my 91z
What up dude, did you ever ended up selling the 1991 to your boss?
08-05-2012, 02:32 PM
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Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: finally dyno'd my 91z
Guy with carbed only 5.3 made 271 running rich, just for comparrison, stock cam.
08-11-2012, 11:27 PM
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