1/4 time for 347

ashford

Member

Dec 19, 2003

485

0

16

fargo ND

May 12, 2007

#1

• May 12, 2007

• #1

gave my new motor a try today it fell somewhere between my hopes and expectations.

Motor- 11:1 347 eagle stroker parts, afr 165's, e303 cam, stealth intake, bbk headers and 2.5 mandrel bent exhaust, stock recalibrated duraspark, accel 300+ignition , 750dp, tci c-4, and 3.08 out back.

i can definately feel a great torque increase over the 302(same setup minus carb) but top end falls off, im blamin the heads and intake. anyways i cant seem to hook up this run was done on a hot bog and netted me some better traction, normally 1st gear is useless.

hey btw this is a 80's capri does this qualify for classic mustang since its over the drinking age?

im car 512 on the left

 

1

10secgoal

Active Member

Dec 1, 2003

2,801

3

49

San Diego

May 12, 2007

#2

• May 12, 2007

• #2

Not to bad for an e-cam.But you have a TON of tuning to do. My first time to te track with my 302 I got an 8.3. 6 months later it was a 7.6 with motor and chassis tuning.

 

2

2002BLGT

Well-Known Member

Dec 18, 2003

2,945

4

59

Bedford VA

May 22, 2007

#3

• May 22, 2007

• #3

I guess im not doing too bad then , just ran a 7.83 at 89 mph two weeks ago with my combo in my foxbody with this combo 306 CI, 11.5 compression , edelbrock RPM heads, X303 cam , cobra EFI intake , sway bar off and ebay subframes but otherwise , BONE STOCK SUSPENSION WITH TOKICO HP SHOCKS...........car is leaving so hard if you dont power shift second, the front is pulling down so hard it looks like its gonna scrape the front bumper off before you hit second , here is a pic of the car .... one pass it spun really bad , ran a 8.16 and trapped 91.76 mph .....

http://dirtydirtyracing.com/cr01.jpg

 

MustangMatt1966

New Member

Mar 11, 2004

1,004

1

0

Orlando Fl.

May 23, 2007

#4

• May 23, 2007

• #4

what the heck car did you race lol...wasnt much of a race...at your track do they try and put you up against cars of equal strength or just random?

 

Vinyl66

Member

Mar 21, 2004

398

0

16

May 23, 2007

#5

• May 23, 2007

• #5

The e cam and gears are holding you back but traction is your biggest problem right now. Your 60 foot time is bad. Get some good tires and watch those times dip into the low to mid 12's easily. I have timeslips at 109 mph in the 12.0-12.2 range.

Mustang Matt:
I don't know how they do it at his track or your's but at Atlanta Dragway you go up against whoever you pull up against in the street legal class. It could be a 10 second Mustang or a 16 second Camaro.

 

1320stang

Founding Member

Nov 13, 1998

4,329

23

89

Edmond, Oklahoma

May 23, 2007

#6

• May 23, 2007

• #6

MustangMatt1966 said:

what the heck car did you race lol...wasnt much of a race...at your track do they try and put you up against cars of equal strength or just random?

Click to expand...

Seeing it was 12:45 in the afternoon, I'm guessing it was time trials. Notice there's no dial-in on the slip.

 

washMO66

Founding Member

Oct 30, 2001

1,000

0

37

Washington, MO

May 23, 2007

#7

• May 23, 2007

• #7

Get some gears 3.08?? Go 3.55 or better....

I'm running a 4.10 but I really need a 3.89.....

My time with 347 is in the sig.....

 

iskwezm

10 Year Member

May 24, 2005

4,159

20

79

Rowland Heights,California

May 23, 2007

#8

• May 23, 2007

• #8

my buddy has been running his 347 in the 7.80's, but he drives it like a girl and shifts at 6,000 and the guy that put the motor in had the timing backed way off and the valves were also loose.So next week we will if it get a low/mid 7.

Mine wont pass tech at this time

 

1

10secgoal

Active Member

Dec 1, 2003

2,801

3

49

San Diego

May 24, 2007

#9

• May 24, 2007

• #9

iskwezm said:

my buddy has been running his 347 in the 7.80's, but he drives it like a girl and shifts at 6,000 and the guy that put the motor in had the timing backed way off and the valves were also loose.So next week we will if it get a low/mid 7.

Mine wont pass tech at this time

Click to expand...

Come down here and try it. They don't look for that at our tracks.

 

iskwezm

10 Year Member

May 24, 2005

4,159

20

79

Rowland Heights,California

May 24, 2007

#10

• May 24, 2007

• #10

10secgoal said:

Come down here and try it. They don't look for that at our tracks.

Click to expand...

you saw my death trap,no belts,battery shut off,door handles, im lucky it even gets me around

 

5

57fairlane

New Member

Apr 2, 2005

560

0

0

Oakwood, GA

May 26, 2007

#11

• May 26, 2007

• #11

I guess you took the stuff of your 302 and put it on a 347?

The car definetly needs some gear and you can still cut a better 60ft on just about any street tires. I used to pull 2.12-2.15s on my 235/60/15 radial t/as, so it can be done. But it is falling on its face in the 1/4. It only backhalved 21 mph.

The heads are eh. But if you have a decent shortblock, you probably could make 50-60rwhp more keeping those heads, getting a different cam and tuning the car.

Right now I would guess the thing makes 270-280 rwhp or so with the c4.
With tuning, it should be up around 300.