Guess My H P !!! - The Dyno & 1/4 Mile Time Thread

Sk8trfred

Member
Feb 27, 2007
45
8
18
MA
Finally hitting the dyno in the AM

408w
AFR205
10.75:1 compression
Super Vic
Holley Sniper
1.75 Long Tube BBK
2.5" bbk catted H-pipe
Dynomax supertubo mufflers
CAM .608 lift 236/244 @.050 112 Separation 109 centerline
Tremec Magnum
3.73 gears

Finally made it today swapped the H pipe to off road X pipe. Made 448 to the wheels. Not bad for a pump gas street car to take the kids for ice cream.

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Willybill32

But at least it's tight!
Jul 16, 2019
298
122
53
Lexington, KY
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1986 GT, 5.0, 5 speed
E303 cam
Comp Cams 1.6 roller rockers
Twisted Wedge heads
Bassani equal length shorty headers
Edelbrock 65mm throttle body and spacer
BBK 70mm mass air sensor
24 lb injectors
BBK fuel rails and regulator
Stock H-pipe with cats

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faststang90

10 Year Member
Nov 5, 2007
522
15
49
baytown texas
What transmission are you running? That's 30% loss, seems high
c4 transmission. my stall is not right. I had a shop rebuild it and it should be a 3,800-4,000. they charged me 700.00 to rebuild and re-stall. it was stalling about 3,000 before so I just wanted to raise it a little. it only stalls to about 2,500 - 2,700 now. I called and told them and the guy said some time we don't get it right bring it in and we will try again and hug up on me. its a lot of work to pull it out. my camshaft rpm range is 4,200-7,200 but I shift it at 6,500. this calculator online says with the hp and weight it best pass should be a 10.76. so its about a second slower than it should be
 

schwerdt1

Active Member
Sep 15, 2020
155
106
53
50
Caddo Mills, TX
331R block, Holley HP, 78/75 turbo running on 14lb spring, 120lb injectors on e85. 11r205 heads. 15° timing.
Had it tuned and then dyno'd today at HPP Racing.

793rwhp @ 5500
 

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schwerdt1

Active Member
Sep 15, 2020
155
106
53
50
Caddo Mills, TX
331R block, Holley HP, 78/75 turbo running on 14lb spring, 120lb injectors on e85. 11r205 heads. 15° timing.
Had it tuned and then dyno'd today at HPP Racing.

793rwhp @ 5500
Now I just have to actually get it in boost myself. Havent gotten on it yet. Wanted to make sure it was all good first. Oh, and try and find a safe street to do so.
 
Sep 3, 2018
15
9
13
34
Colorado
Nothing really exciting going on here but… more numbers. 236whp/287lbs
Mods:
Stock 302
Holley Term x
Equal length bbk headers (free)
Bbk Catless h pipe
Pre axle dumps
70mm throttle body
Explorer intake
E-fans
K&N

Car also ran [email protected] (right lane car was a bmw 540i)
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v8stang289

Advanced Member
Apr 22, 2008
120
109
74
These are from a few years ago, the last time I ran the car.

86 GT hatch, 5.0/5-speed
stock 89 shortblock (re-ring and new bearings)
96 explorer GT40 heads -F3ZE casting- with mild port and polish (cleaned up bowls, smoothed transition etc.) with Trick Flow springs
stock rockers
9333pt felpro head gaskets
TFS-1 Camshaft installed dot to dot
Edelbrock Performer EFI intake
65mm explorer TB
67mm FMS egr spacer
Stock 55mm MAF
19 lb 4hole injectors
155lph walbro pump
Cold air intake with K&N conical filter in inner fender(at time of run- stock airbox now)
Flowtech shorty headers, 1 5/8" primaries, 2.5" ball flange
off-road 2.5" H-pipe
Flowmaster 2.5" cat back
A9L computer
17* initial timing
Taurus 3.8 electric fan ( with 3G upgrade)
Stock T-5 (3.35 first gear)
8.8" with 3.73 gears and carbon fiber clutches
225/55/16 falken street tires on pony wheels.

Car should be close to stock weight, has full interior, A/C, P/S, no smog, stock sway bars are on and hooked up, stock suspension with replacement shocks/struts.
Runs were with 1/2 tank fuel and 215lb driver
Temp was mid 60's, elevation of track around 45' above sea level.

13.773 @ 101.463 mph
13.888 @ 101.574 mph

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