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

deathb4dismount

Crap, didn’t realize my crotch was in that picture
5 Year Member
Oct 6, 2011
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Never posted when it was done 2 years ago.

Rebuilt stock block, forged internals
TFS 170 heads
Chinese Cobra Intake
70 MM TB
73 MM MAF with 24# injectors
Shorty headers, off road H and flow masters
10* timing
271/311

image.jpeg
 
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RangerJoe

I leave the horn on while driving
5 Year Member
Apr 26, 2010
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Georgia
No dyno for new combo, but I do have a time slip.

-Home built, stock block 331, 10.7:1
-AFR 185'so OOTB w/ LS style valve springs
-FTI cam, 227/235 .613/.588 111.5
-HSM2 with 70mm Race Accufab and 80mm Pro-Mike
-AFM Big tube Shorties
-AC & PS intact
-No tuning
-3360lbso race weight

-7.45 @ 91.88 MPH leaving off 2 step @ 6,000 rpm. Online calculators show 364.5 rwhp.

Joe
 

a91what

SendMeUrDataLog
Mod Dude
Apr 6, 2011
9,602
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Hillsborough county
Here's my sheet, the supercharger puked it's guts during the pull (front seal). I think it has more potential but we will see.

306. 9.3:1
Gt40 3 bar heads home ported
Funnel Web
50lb injectors
Eaton m90 10psi -- 6psi by 5k rpm
E303
75 and 65mm throttle bodies
Blue oval shortie headers.
Alot of stock clutch slippage.
1485479450819-1738631381.jpg

That's 386tq 282hp.
 

85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
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I've got one for you guys.

My old combo was:
347, I think around 9:1 because of deeply dished pistons and large factory combustion chambers
'69 C9OE 351W heads, ported and polished by hand (very well done) 1.90/1.60 valves
AFM N-91 cam
Wieand Stealth intake
Holley 650DP
Full length headers, etc etc.
Made 362/364 at the wheels
347Dyno2.jpg


New combo will the the same except for:
AFR Renegade 185’s, 58cc chambers to hopefully bump that compression up
Edelbrock Victor Jr intake
Pro Systems 780cfm carb

Whenever I get around to finishing it. I'm actually concerned that the new heads won't make much more power. The old heads were ported by a wizard. I also kinda expect to lose torque or not make much more but gain peek HP.
 

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25thmustang

Mustang Master
Sep 5, 2003
2,021
85
99
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Montgomery, NY
25thmustang


Stock Shortblock
Stock HO Cam
GT40 Valves and a valve job
1.7 Roller Rockers
Cobra Intake
65mm TB
Pro M 75mm MAF
Mac LT Headers
VRS O/R X pipe
Spintech Catback
AFPR, Pulleys
FMS Aluminum DS
Stock suspension

272 rwhp/ 316 rwtq

Can't believe I didn't mention track times. The car actually dynoed 256/295 when it ran its best times.

12.53 @ 107 on 17" ET Streets
12.95 @ 109 on 18" Street Radials

What suspension mods?
Mine has what I was told were Racecraft lowering springs, no name LCAs and the rest of it is stick 154k mike stuff. There is no weight transfer.
 
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Nov 23, 2017
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Stock block 302
flat top 86' GT pistons
E7 heads lightly ported
1.72 roller rockers
stock HO cam
Weiand 8011 intake
670cfm street avenger carb
C4, FR Alum. DS, 8.8, 26x10 slicks
AC delete (still has p/s, clutch fan ect..)
91 Hatchback 2800lb race weight

245 rwhp, 13.124 @101 mph w/1.809
60' ft
 
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deathb4dismount

Crap, didn’t realize my crotch was in that picture
5 Year Member
Oct 6, 2011
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288/303. 306, TFS 170s, TFS stage 1, Holley Systemax, power pipe, 80 MM Maf, 75 MM tb, BBK shorties and h pipe. Maybe there’s more in it with some long tubes?

I assume a9l?
The stock ECU is a bit weak on its timing curve, how much timing and at what afr?
Stock computer and an ancient Superchips. It was in there when I bought the car. I know you and others will cringe, but I have absolutely no idea how much timing or what afr it’s running at. I leave that to the professionals.
 

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Dagassa

Member
Apr 2, 2018
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Recently purchased an 85 GT and it came with a time slip. :)

Mods are:

351W (F4TE block)
.040 over
10.5:1 compression
Ford "F" cam
AFR 185 heads (#1422, 58 cc)
Edelbrock RPM Air-Gap intake
150 shot NOS
Holley 4150 (4777-7, 650 DP)
3.73 Rear end gears
Tremec 3550
Mickey Thompson ET Streets
Southside Machine Lowers.
Stock springs.

Any guesses on HP/TQ? Also, any suggestions to get more power out of this combo? Thanks!
 

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96pushrod

Mustang Master
May 15, 2018
868
529
103
28
Savannah
347
10.8:1 comp, woody built long block
Forged internals
Custom comp cam: .576int .571 Exh. 226/234 @.050 112lsa. Idles nicely.
11r 205
Pro m 80
75mm tb
Ported r lower and stock box r upper
40lb injectors. 255lph pump
Stock sn95 fuel rails and lines.
A5 trans
Tuned with quarterhorse. 30 degrees advanced all in.
1 3/4 x 3in Long tubes with a pro chamber. The rest built by me using some dynomax ultra flows. Axle dumped.

All in a 96 chassis.

422hp @5500 /[email protected] Cars a little n/a monster on the street.

15E14F5A-87E4-493B-951A-798D871641FF.jpeg

47C4A36A-8918-4533-96CA-7E4215CD705D.jpeg
View: https://youtu.be/EkDJGlp3DTs
 

FastDriver

My dad had a bra
SN Certified Technician
Sep 5, 2001
4,527
1,239
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Fort Knox, KY
@RangerJoe
@85_SS_302_Coupe
Guys, you're the only ones I've left in the thread that never posted documentation. You're regulars and I trust you, but it would help keep the thread consistent if you'd post a timeslip or dyno for your combos. If you have them, please edit your posts to include them. Thank you!
 
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85_SS_302_Coupe

it sucks (I know) to be on the receiving end
15 Year Member
Nov 11, 2003
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@RangerJoe
@85_SS_302_Coupe
Guys, you're the only ones I've left in the thread that never posted documentation. You're regulars and I trust you, but it would help keep the thread consistent if you'd post a timeslip or dyno for your combos. If you have them, please edit your posts to include them. Thank you!
I added my old dyno graph but it's 10 years old now and way obsolete. I never did get to race that combo so no time slips.
 
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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
 
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Nov 23, 2017
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My “new” combo:
Roller block 387w (3.85 stroke, 4in bore)
12.25:1 CR
Forged 4340 crank
Stock 351w rods, stock forged HO pistons
Edelbrock performer 2.02 heads, 1:6 Harlan sharp 7/16 rockers
Unknown HR cam, but it’s pretty big
Vic Jr intake, 780ps carb on 110 gas
1 3/4 BBK LTs, alternator, elec. water pump C4, PTC 4800 converter, 3:27 gear on 28x10.0 Hoosiers
2715lb race weight
Left lane (26x)

Calculator says 483hp, I would guess close to 600 rwtq
 

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