Mustang Cobra - 347 Stroker - Pump Gas Dyno Tune

[Spent]

Jeff brought us his 1995 Cobra Mustang for some repairs, parts installs, and a tune on SCT. We started by repairing a "ticking" noise that he had, which turned out to be nothing but a broken spark plug.

Jeff had us replace his Shorty Headers with BBK long tube headers, install a BBK X Pipe, Trick Flow Nitrous Kit, and Autometer gauges and pod.


http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/8-6-10.jpg

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/8-20-10.jpg

After the installs, Jeff's Cobra went on to the dyno.

Here is the setup:

347 Stroker Engine
Trick Flow Heads
Nitrous Cam
Roller Rockers
Trick Flow Intake Manifold
BBK Throttle Body

BBK Long Tube Headers
BBK X Pipe
Flowmaster Exhaust

#42 Injectors
Walbro 255lph Fuel Pump
Aeromotive FPR
Trick Flow Nitrous Kit (Jetted for 150 shot)

MSD Billet Distributor
MSD Plug Wires
MSD Ignition and Coil

Tuned on SCT. As a side note, SCT for OBD1 Ford Cars does not offer datalogging, even though all of their OBD2 programmers do on GM & Ford applications. On OBD1 Fords, we usually recommend Tweecer RT for tuning, but Jeff's ECU already had the chip for SCT.
Here is the chart from the motor tune:

This chart is without the Nitrous. This engine has a nitrous cam installed, which can have a slightly adverse effect on all-motor performance. After Jeff's bottle warmer is installed, we will tune for nitrous, and post those charts as well. Be on the lookout for update!

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/Jeff_Mustang.jpg

Click this picture for the video!

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/th_SANY0004-1.jpg (http://s672.photobucket.com/albums/vv89/tdcweb/eBlogger/?action=view&current=SANY0004-1.mp4)

[Spent]

On another note; more power was made, which in itself is more impressive considering it's a nitrous cam, however it didn't pass our heatsoak testing and ignition timing was appropriately reduced to prevent knock. We may revisit this aspect of tuning when he returns for his nitrous tune next week, and if we can extract more power on the motor while passing heatsoak conditions, then we will post and updated chart as well.

On to the technical aspect. As most of you are probably aware of, iron blocks tend to hold heat big time compared to aluminum blocks. We were able to find an extra 40-50whp over this chart but after the 4th consecutive pass while testing for heatsoak, the engine would start braking up on the top end (around 4.5-5k rpms) due to heatsoak despite 2 step colder plugs, and coolant temperatures in the 170-190's. Now that his setup is properly tuned to eliminate this brake up, he can enjoy revving to 6k rpms with confidence for the first time. Usually, one can use temperature compensation tables to adjust timing based on intake and coolant temps but iron blocks are not as forgiving as aluminum blocks. There is no point in more power if you can't safely put it down to the wheels consistently under all driving conditions..... Yes iron blocks are generally stronger but aluminum blocks are more efficient.

Customer plans to switch to E85 next spring which will help with heatsoak tremendously due to it's cooling properties which in turn will allow us to increase ignition timing to more appropriate levels and make more power, safely and reliably. Also, customer plans to jump from a 150 shot, to a 300 shot once he switches to E85.

Also, for those who are not aware, it's not always about reducing ignition timing. Reducing it too much will not only result in reduced power output, but it can actually increase Exhaust Gas Temperatures. You will need to find a middle ground between maximum power and consistency. Having the right tools, in this case a dyno, and knowing how to use such a tool (primarily through the smoothing factor of the chart), helps in determining not just maximum efficiency but a middle ground for reliability and consistency as well.

For those wondering how will timing be affected during the next tuning session for nitrous; theoretically, since timing is already reduced from maximum efficiency levels, little to no timing will have to be taken away for the 150 shot. Keep in mind the nitrous cools things down quite a bit. This of course may change if the setup is able to pass heatsoak testing with more advanced timing. We have a couple of thing planned to help with cooling the motor like lowering the temperature threshold at which the fans turn on and water wetter as well for next time so stay tuned.

[89RABIDFOX]

Good luck w jumping to 300 shot. Hope he has dart block or something bc any stock block isnt going to work out for him. Girdle or no girdle.200 shot is max he will like if he plans to shoot often.6 stroker motors later I figured this out. Little weak on power for 347 compared to mine. But good numbers all in all. Good looking car

[axistang]

Good luck w jumping to 300 shot. Hope he has dart block or something bc any stock block isnt going to work out for him. Girdle or no girdle.200 shot is max he will like if he plans to shoot often.6 stroker motors later I figured this out. Little weak on power for 347 compared to mine. But good numbers all in all. Good looking car

If its Jeff F, then it probably is a Sportsman or Dart block. I think he split a block with a 347 stroker already several years ago. I think i ran into this car 2 years ago on I-26 and it was pretty fast then.

[punisher]

So this pony made 342hp with a 150 shot?

[TurboLSX]

Good luck w jumping to 300 shot. Hope he has dart block or something bc any stock block isnt going to work out for him. Girdle or no girdle.200 shot is max he will like if he plans to shoot often.6 stroker motors later I figured this out. Little weak on power for 347 compared to mine. But good numbers all in all. Good looking car

you can spray a 300 on a stock block.:secret:

[Quinn]

it will hold up to a 300 shot for a while with the right tuner, supporting mods, and a progressive.

[axistang]

So this pony made 342hp with a 150 shot?

i dont think so.

This chart is without the Nitrous.

[DTSVT03]

So this pony made 342hp with a 150 shot?

342hp was on motor, NOT nitrous.

[plumcoupe]

Only built lt1's make 342hp on a 150

[MrDavid]

300 shot is a lot of nitrous. I hope this guy has a shit ton of good fuel, cold ass plugs, really strong head studs, and a stout block.

[SlowOhFoh]

how much power does the trickflow top end package usually make?

[crumbie]

280-320 rwhp lols

[plumcoupe]

I drove a fox gt a while back 306 with that kit and it felt like turd

[punisher]

Only built lt1's make 342hp on a 150

lol.. i know 4 lt1's that make morew power then that cobra and are just cam'd.

[plumcoupe]

Of course you do

[punisher]

I drove a fox gt a while back 306 with that kit and it felt like turd

thats bc they are.

[1bad5slow]

thats bc they are.

we'll see when i get my rear end done

[justamach]

lol.. i know 4 lt1's that make morew power then that cobra and are just cam'd.

and they also came with 90hp more from the factory. the 94-95 5.0 was rated at 215 from the factory. cobra was a tad more but nothing to brag about

[crumbie]

and they also came with 90hp more from the factory. the 94-95 5.0 was rated at 215 from the factory. cobra was a tad more but nothing to brag about

dude give it up. mustangs are all slow ass turds. :no teeth:

[plumcoupe]

This is true. Is the punisher gonna be at union Friday?

[punisher]

This is true. Is the punisher gonna be at union Friday?


my punisher can be where ever u want it to be.

[plumcoupe]

Would u like to get punished?

[punisher]

Would u like to get punished?

ya come get u some.

[sepno77]

dude give it up. mustangs are all slow ass turds. :no teeth:

True statement.^^^^

[Quinn]

dude give it up. mustangs are all slow ass turds. :no teeth:

exactly

[plumcoupe]

No excuses about tires either run what u brung

[sepno77]

This isn't gonna end well on 245's.

[punisher]

thread off tupic, check warzone.

[justamach]

you guys convinced me. new name is musturd

[punisher]

lol musturd.

[crumbie]

musturd and machturd

[punisher]

think your sig can be any bigger there crumbie lol

[punisher]

No excuses about tires either run what u brung

check out mexico, got your name on a thread :)

[plumcoupe]

Where might I find that?

[4eyedcoupe]

U have to be special to get in there

[plumcoupe]

Obviously !!!

[crumbie]

think your sig can be any bigger there crumbie lol

you wanna see that view in person? :nerd:

[TopDeadCenter]

300 shot is a lot of nitrous. I hope this guy has a shit ton of good fuel, cold ass plugs, really strong head studs, and a stout block.

He definately has the block for it. It's the Dominator 347 from Coast High. Here's the link to the site:
Coast High (http://www.coasthigh.com/Ford-347-crate-motors-s/1013.htm)


And a few details of the internal parts:

Probe SRS Pistons
Lightweight I-Beam Rods
Forged 4340 Crank
DART Block
Probe Main Girdle with ARP Studs

[89RABIDFOX]

you can spray a 300 on a stock block.:secret:

not a stock 302 block. I have split i dont know how many over the years.

[89RABIDFOX]

it will hold up to a 300 shot for a while with the right tuner, supporting mods, and a progressive.

idc about tuners etc. Idc about the supports. I had all that on my 347 and it didnt consider the 300 shot. Stock block. Progressed r for babies. Hit it all at once and hold on. Hell with power slowly coming in.

[The EnforceR]

Ya'll act like a 275 width tire is gonna hook SO much better than a 245 tire. "Gotta get 275s, Gotta get 275s!!!!" It's the freakin tire and the compound more than it is the width.

[89RABIDFOX]

ya'll act like a 275 width tire is gonna hook so much better than a 245 tire. "gotta get 275s, gotta get 275s!!!!" it's the freakin tire and the compound more than it is the width.

and your a professional at making a car with power hook...hahahahahahaah!!!!!!

[MrDavid]

you guys convinced me. new name is musturd

Stewie, want me to change your s/n to justaturd? LOL


This thread is way off topic. Lets try to keep it somewhat to the original topic.

[punisher]

Stewie, want me to change your s/n to justaturd? LOL


This thread is way off topic. Lets try to keep it somewhat to the original topic.


lolzzz




and your a professional at making a car with power hook...hahahahahahaah!!!!!!

thats cold man lol i think its more of the fact hes worried to break the reAR end.

[The EnforceR]

and your a professional at making a car with power hook...hahahahahahaah!!!!!!

Nope.....but yo will agree with me on this too.

[89RABIDFOX]

I agree w you on nothing. Exceptwhen you say your cars slow.

[punisher]

I agree w you on nothing. Exceptwhen you say your cars slow.

lolzz

he needs n20.

[sepno77]

Ya'll act like a 275 width tire is gonna hook SO much better than a 245 tire. "Gotta get 275s, Gotta get 275s!!!!" It's the freakin tire and the compound more than it is the width.

So your saying that a 245 street tire will hook as good as a 325 street tire?
and a 245 mt will hook just like a 325 mt?

cause we all know that obviosly the 245 mt will outperform any street tire....at least I assume that everyone knows this.

[The EnforceR]

No. I'm saying it seems like alex is all worried about finding a 275 width tires. It's not gonna make much of a difference unless it's a DR.

Skinny little 245 DR is gonna outperform and wide freakin all season 315s. I'm saying worry more about the TIRE itself (softness, DR or not, etc..) not just the width. Yea, a wider tire provides more contact area, but doesn't really matter if its still hard geasy rubber. Yea, it may hook slightly better.....but just get a darn DR if you are worried about "hookin"

[punisher]

No. I'm saying it seems like alex is all worried about finding a 275 width tires. It's not gonna make much of a difference unless it's a DR.

Skinny little 245 DR is gonna outperform and wide freakin all season 315s. I'm saying worry more about the TIRE itself (softness, DR or not, etc..) not just the width. Yea, a wider tire provides more contact area, but doesn't really matter if its still hard geasy rubber. Yea, it may hook slightly better.....but just get a darn DR if you are worried about "hookin"


huh lol im not worried about nothing lol i aint looking for tires lol i dont plan to hook on nitrous anyways. im racing with the tires i have on now, just for some fun.

[crumbie]

camero guys make big dyno numbers. then complain about no traction. then get tires. then can't run b/c they will break their 10 bolt.

[justamach]

and us musturd guys dont make enough power to break our rears

[The EnforceR]

camero guys make big dyno numbers. then complain about no traction. then get tires. then can't run b/c they will break their 10 bolt.

So true, So true!

[crumbie]

and us musturd guys dont make enough power to break our rears

I've already broken one axle :hack:

[crumbie]

So true, So true!

shootin' from the hip sonS :nerd:

[justamach]

chevy powered fox. has to be

[crumbie]

chevy powered fox. has to be

i MIGHT have made 201 rwhp at the time LOLs. was running about what bone stock lt1s run.

[punisher]

camero guys make big dyno numbers. then complain about no traction. then get tires. then can't run b/c they will break their 10 bolt.

lol very true

[sepno77]

chevy powered fox. has to be

LmAo!!!

[MrDavid]

camero guys make big dyno numbers. then complain about no traction. then get tires. then can't run b/c they will break their 10 bolt.

Whats a camero?


and us musturd guys dont make enough power to break our rears

Stewie, I'll trade you rears. But you can keep those 4.30's.

[crumbie]

Whats a camero?

:no teeth:

[1997b4c]

camero guys make big dyno numbers. then complain about no traction. then get tires. then can't run b/c they will break their 10 bolt.

ok lets not stereo type here....im not worried about my ten bolt lol

[crumbie]

ok lets not stereo type here....im not worried about my ten bolt lol

I don't lump you into the chotypicals :nerd:

[1997b4c]

I don't lump you into the chotypicals :nerd:

thats good

[Quinn]

idc about tuners etc. Idc about the supports. I had all that on my 347 and it didnt consider the 300 shot. Stock block. Progressed r for babies. Hit it all at once and hold on. Hell with power slowly coming in.

200 shots are for babies

[Quinn]

He definately has the block for it. It's the Dominator 347 from Coast High. Here's the link to the site:
Coast High (http://www.coasthigh.com/Ford-347-crate-motors-s/1013.htm)


And a few details of the internal parts:

Probe SRS Pistons
Lightweight I-Beam Rods
Forged 4340 Crank
DART Block
Probe Main Girdle with ARP Studs

he needs to ditch that intake that's on that car. will pick up alot with a better intake and since it's a dart block i would bomb the shit out of it.

[plumcoupe]

How much you spraying in your race car?200 shots are for babies

[crumbie]

205

[MIKE02TA]

Systemaxx intake would do better!!

[crumbie]

systemax FTW

http://i165.photobucket.com/albums/u61/crumbie50/utf-8BSU1HMDEzNDQtMjAxMDA2MzAtMjMwOC5qcGc-1.jpg

[MIKE02TA]

Crumbie please tell me if you have one, that it is on your car???? Or getting ready to be put on.

[crumbie]

nah i just found that pic on the interwebs

[lskllr]

SYSTEMAX FTW AND X2 ON INTERWEB PIX!

http://i84.photobucket.com/albums/k3/drobs5/DSC_0696.jpg

[lskllr]

:bye:systemax FTW

http://i165.photobucket.com/albums/u61/crumbie50/utf-8BSU1HMDEzNDQtMjAxMDA2MzAtMjMwOC5qcGc-1.jpg

Thats a pretty cute lil pile of parts you have there! :bye:

[crumbie]

SYSTEMAX FTW AND X2 ON INTERWEB PIX!

http://i84.photobucket.com/albums/k3/drobs5/DSC_0696.jpg

NEMESIS got a lil skeered when the words "THE HATCH" were mentioned.

[lskllr]

i got a lil scared when the passenger side header wrap soaked in brake fluid caught fire lol

[Coppertop8705]

TDC, this is way off topic but can i get some more info about the dash unit this car has?

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/8-24-102.jpg

[silver455]

i got a lil scared when the passenger side header wrap soaked in brake fluid caught fire lol

that ish was hilarious lol

[Quinn]

idk what shot is on my car. bought the kit, put it on my car and never checked the jets. it's good for 300 or 350 shot so who knows whats in it.

[Quinn]

How much you spraying in your race car?

btw it's a cam and intake 302, full interior, street car.

[axistang]

he needs to ditch that intake that's on that car. will pick up alot with a better intake and since it's a dart block i would bomb the shit out of it.

http://www.mustang50magazine.com/techarticles/m5lp_0601_mustang_intake_manifold_test/dyno_results.html

Trick Flow intake and Systemax II are compared at the bottom of this page. Those are crank numbers, not flywheel. Not worth swapping the intake for those results.

[Quinn]

http://www.mustang50magazine.com/techarticles/m5lp_0601_mustang_intake_manifold_test/dyno_results.html

Trick Flow intake and Systemax II are compared at the bottom of this page. Those are crank numbers, not flywheel. Not worth swapping the intake for those results.

wouldn't put that street heat or the systemax on it. i would put a trickflow R intake on it

[Spent]

TDC, this is way off topic but can i get some more info about the dash unit this car has?

http://i672.photobucket.com/albums/vv89/tdcweb/eBlogger/8-24-102.jpg

Sure. This is a 240sx dash. The stock cluster has been removed, gutted, and fitted with an Autometer Speedometer and Oil Pressure Gauge. The display you see on the dash is actually the user interface for the MircoTech EMS. This unit can display all of the EMS feedback, including:
Tachometer
Boost
Water and Air temp
Voltage
Programmable Shift Light
Controls for Datalogging

It's a neat unit.

After this picture was taken, we installed a dummy light for the Alternator in the bottom left hand corner, since this car came in with a charging issue.

[justamach]

Stewie, I'll trade you rears. But you can keep those 4.30's.

sorry gears go with it

[Diggler]

idk what shot is on my car. bought the kit, put it on my car and never checked the jets. it's good for 300 or 350 shot so who knows whats in it.

how much timing do you pull for the unknown shot? :think:

[Quinn]

how much timing do you pull for the unknown shot? :think:


hahahaha. i've never sprayed the car. was about to send it to columbia to let chris tuten tune it then the oil pump locked up one night on my way home.

[1997b4c]

200 shots are for pussys yet you never sprayed your car???

[crumbie]

citrus is for cheaters

[Quinn]

200 shots are for pussys yet you never sprayed your car???

never said it was for pussys, learn to read. i was gonna spray it as soon as i had it tuned but the oil pump locked up.

[MrDavid]

never said it was for pussys, learn to read. i was gonna spray it as soon as i had it tuned but the oil pump locked up.

Babies...Pussies...Both closely related. One comes out of the other...:D

[Quinn]

Babies...Pussies...Both closely related. One comes out of the other...:D


lol

[1997b4c]

my bad did read wrong babies....hard wrong thing on the mind

[crumbie]

my bad did read wrong babies....hard wrong thing on the mind

LMAO. lady friend late?

[Quinn]

LMAO. lady friend late?

that's messed up

[crumbie]

he typed "pvssy" for "babies" and misstyped "hard" for "had". LOL. freud would have a field day!

[1997b4c]

lol nah not the case