|
Author
|
Topic: Dyno results
|
65_289
Gearhead Posts: 180
From:
Registered: Jul 2001
|
posted 09-28-2001 07:06 PM
   
Here are the dyno results with the 650 Dp. We adjusted the timing up and down, and it made the most hp right where it is. If you notice the A/F ratio, it is mostly around 13:1, with some dips to near 12:1. There is a small dip in the hp & tq graphs around 5100 rpm.Grand total is 249.5rwhp, 282.8rwtq.  ------------------
1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 650 double pumper, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.
IP: Logged |
SteveLaRiviere
Administrator Posts: 16358
From: Saco, Maine MCA # 47773
Registered: May 99
|
posted 09-28-2001 07:22 PM
I looked up your old dyno sheets:   How do you like the Holley now? That's an improvememt of 35 horse and 12.5 lbs/ft of torque. Was the carb the only change?
------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC The terrorist may have killed 6,398 Americans,
but there are 281,000,000 of us left, and WE'RE PISSED!!! [This message has been edited by SteveLaRiviere (edited 09-28-2001).]
IP: Logged |
steve'66
Gearhead Posts: 2983
From: Sonoma,CA,USA
Registered: Mar 2000
|
posted 09-28-2001 07:48 PM
Excellant!Now open up the exhaust and you'll be "happening".  SteveW
IP: Logged |
65_289
Gearhead Posts: 180
From:
Registered: Jul 2001
|
posted 09-28-2001 07:55 PM
SteveLaRiviere: we put the carb and a 1" spacer on. Those are the only changes.steve'66: think the exhaust has that much to do with it? I may be too pessimistic, but I STILL think a motor rated at 345 flywheel hp should make 280rwhp. I STILL think I am down 30hp, at least.
IP: Logged |
n2oMike
Gearhead Posts: 318
From: Spencer, WV
Registered: Jan 2001
|
posted 09-28-2001 08:30 PM
Ahemm.. hmmm.. aaaa... EXHAUST TIME!!!Good headers, and at least 2.5" mandrel bent tubes... if not 3". Great to see the power improvement! Good Luck!
IP: Logged |
65_289
Gearhead Posts: 180
From:
Registered: Jul 2001
|
posted 09-28-2001 09:25 PM
quote:
Originally posted by n2oMike:
Ahemm.. hmmm.. aaaa... EXHAUST TIME!!!Good headers, and at least 2.5" mandrel bent tubes... if not 3". Great to see the power improvement! Good Luck!
So what is good, Heddman, Hooker Comp/Super comp? Also, could the driveshaft/rear end beING out of whack cause am excessive power loss?
[This message has been edited by 65_289 (edited 09-28-2001).]
IP: Logged |
steve'66
Gearhead Posts: 2983
From: Sonoma,CA,USA
Registered: Mar 2000
|
posted 09-28-2001 11:09 PM
A friend of mine's son has a nice '67 Camaro. It had a 327 and ran low 14 second 1/4 miles. The kid decided to buy a new 430 h.p. G.M.P.P. crate engine (I don't remember the code #) but anyway they toped it off with a nice 750 Holley and it ran high 13's/low 14's.  They tried everything for a couple weeks until a weekend race when they were allowed to uncork the exhaust. The car immediately started running mid 12's!!! The mph was up almost 10 and the h.p. was "uncorked"! They went with 3" Flowmasters after that experience and the car is a solid mid 12 second performer today. The moral of the story is OPEN UP THE EXHAUST!   SteveW
IP: Logged |
jdsgallops
Gearhead Posts: 239
From: Green Bay, WI
Registered: Feb 2001
|
posted 09-28-2001 11:19 PM
Actually it should make even more than 280. I was surprised by the Car craft article where they got more than 345hp out of that engine. Remember that the 345 was with FI. Car craft put a dual 4 intake on it and I forget what kind of power they got, but they did test with an rpm intake and single 4 and got like 380? out of it I believe. I don't have the issue right here, but I was very impressed when I saw it. With 15% drivetrain loss you should be closer to 325 at the wheels. Something is amiss. I would also have to guess exhaust since everything else looks in place.
IP: Logged |
65_289
Gearhead Posts: 180
From:
Registered: Jul 2001
|
posted 09-28-2001 11:38 PM
quote:
Originally posted by jdsgallops:
Actually it should make even more than 280. I was surprised by the Car craft article where they got more than 345hp out of that engine. Remember that the 345 was with FI. Car craft put a dual 4 intake on it and I forget what kind of power they got, but they did test with an rpm intake and single 4 and got like 380? out of it I believe. I don't have the issue right here, but I was very impressed when I saw it. With 15% drivetrain loss you should be closer to 325 at the wheels. Something is amiss. I would also have to guess exhaust since everything else looks in place.
They had an RPM intake and a 625 Road Demon and got 371hp@6100 rpm. So I am hearing exhaust. Maybe some Hooker super comp headers with 2.5 inch h-pipe and some cut-outs after the collectors? Or should I run it through the mufflers even at the track? If so, what kind of mufflers? Dynomax??
------------------
1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 650 double pumper, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.
IP: Logged |
Ryan Wilke
Gearhead Posts: 422
From: Stanton, MI
Registered: Oct 2000
|
posted 09-29-2001 08:13 AM
On my 4-spd'd 306", shifted at 6300rpms, I have a set of Flo-Tech headers (1 5/8" X 28") with the Jet-Hot coating. The 3" collector dumps into a 3" dia. H-pipe (the crossover is 2.5" dia.) then into a pair of Flowmasters (3" in & out; #53031) and finally into 3" turndowns before the axle. The H-pipe and the turndowns are muffler shop made. I can still hear any odd noises that may crop up and it's street legal. It's working for me...I'd say it would work for you. Just my 2 cents - Good Luck! Ryan
IP: Logged |
n2oMike
Gearhead Posts: 318
From: Spencer, WV
Registered: Jan 2001
|
posted 09-29-2001 10:20 AM
My vote is for Hooker Super Comps and as free of a flowing exhaust as you can tolerate... If you go 2.5", make sure it is all mandrel bent. If you want tailpipes, 2.5" is as big as you can get. Flowmaster and MAC make them. If you can tolerate turndowns, 3" is the way to go. They will thump on your head at idle, but aren't that loud at all at cruise. I use Edelbrock 3" race mufflers and turndowns. About any good, namebrand aftermarket "race" type muffler will work well. If you can pick up a muffler and see straight through it... that's a good sign. Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
IP: Logged |
68F100
Gearhead Posts: 1077
From: Fort Madison, Iowa USA - United We Stand
Registered: Oct 99
|
posted 09-29-2001 05:42 PM
quote:
Originally posted by n2oMike:
If you can pick up a muffler and see straight through it... that's a good sign.
Unless it's a rust hole you are looking through! LOL
IP: Logged |
bluestreek
Gearhead Posts: 257
From: Athens,GA
Registered: Jul 2001
|
posted 09-29-2001 11:38 PM
quote:
Originally posted by 65_289:
There is a small dip in the hp & tq graphs around 5100 rpm.
Looks like the tires might have broke loose when it reached peak HP.. Nice to see some good news!!
IP: Logged |
65_289
Gearhead Posts: 180
From:
Registered: Jul 2001
|
posted 09-30-2001 01:32 PM
Ok. We have decided to put a cut-out on the exhaust to see what that will do. We want to do that before spending $300 on headers and welding.Next week, I am gonna go to the track and see what I can get with the car like it is. Then, I will open the exhaust and see if I get any gains.
IP: Logged |
Mustangsandmore Forums
UBBFriend: Email This Page to Someone! 
