Going to the track tonight, what will it run?

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notchback501993

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Mar 9, 2003

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Lansing, IL

Jul 10, 2004

#1

• Jul 10, 2004

• #1

My car ran 12.70's last year and have done a few things to it. Changed the cam from a Crane2031 to a 2040 (Like an E-Cam). I got the correct valve springs this year, was running the ones that came stock with the World Windsor Sr. heads(Junk). Switched the exhaust from equal shorties, h pipe, and MAC stuff to the tailpipes to MAC Longtubes, h-pipe, and flowmaster dumps. I pulled another 50 or so pounds out of the car bringing the race weight down to around 2910 or so. I re-ringed and put new bearings in the motor. Cleaned up the Windsor Sr.'s with a little portjob. My old MPH was in the 107.5 range, that equates to around 290 RWHP and around 337 at the flywheel. I think at the very least I should have gained 20 RWHP and that would put me in the 112MPH range and 12.20's. If my port job was any good and the cam raises the HP peak up a little in the RPM range I think that 11's are possible. What do you all think, will I get my first 11 Second timeslip? Check my sig for all my mods.

 

J

Js5ohLX

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Apr 5, 2004

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Ohio

Jul 10, 2004

#2

• Jul 10, 2004

• #2

I really don't see you hitting 11's with those heads without a power adder.

 

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notchback501993

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Lansing, IL

Jul 10, 2004

#3

• Jul 10, 2004

• #3

Why not?

 

J

Js5ohLX

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Jul 10, 2004

#4

• Jul 10, 2004

• #4

http://www.jason.fletcher.net/tech/flowdata/castiron.htm

They don't flow so well on the exhaust end. How big is the combustion chamber? Your best run was 12.7, to hit 11's is a big jump, If you really ported those heads, it may be possible. But that's just my opinion. Post the time slip after you run.

 

S

stang2841

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Jun 12, 2004

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palm harbor florida

Jul 10, 2004

#5

• Jul 10, 2004

• #5

my estimate is about mid to low 12's
it takes a little more then what u think to get to 11's

 

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notchback501993

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Lansing, IL

Jul 10, 2004

#6

• Jul 10, 2004

• #6

I need just a hair over 114 MPH to run an 11.99 . That equates to 337 RWHP, I had 290. If you just extrapolate a little, the cam raises the peak hp rpm from the old cams 5300 RPM to about 5900. If the heads can flow at 5900 and all things equal, just the cam will significantly raise the HP. I think the combo is about as matched as my budget will allow. Not that the motor will be making that much more power, I think I was losing a lot of power to the old valve springs (unstable valvetrain) and a mismatched cam. Keep in mind that the car only weighs about 2760 and with me in it around 2910.

 

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notchback501993

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Lansing, IL

Jul 10, 2004

#7

• Jul 10, 2004

• #7

One other thing, I was kind of babying it last year. That run (12.7 @ 107.45) I had a 1.9 60ft. time. I was holding the rpm at 5000 but not mashing the gas until the driveline caught up. If I drive balls out that alone will be worth 2 tenths.

 

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notchback501993

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Mar 9, 2003

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Lansing, IL

Jul 10, 2004

#8

• Jul 10, 2004

• #8

ttt

 

dderek

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Feb 29, 2004

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Jul 10, 2004

#9

• Jul 10, 2004

• #9

go to the track already and lets see.
i doubt youd have 337RWHP from those few swaps, but most likely over 300
but youll get better times for sure

 

N

notchback501993

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Lansing, IL

Jul 20, 2004

#10

• Jul 20, 2004

• #10

Sorry, didn't make it to the track (rain). Just want to hear a little more from the nay-sayers.

 

J

Js5ohLX

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Jul 20, 2004

#11

• Jul 20, 2004

• #11

notchback501993 said:

Sorry, didn't make it to the track (rain). Just want to hear a little more from the nay-sayers.

Click to expand...

You ask a question, we tell you, and you don't like it, I'm sorry, I hope you can prove me wrong, take a look at what others have and what they run. I've seen cars with a lot better mods than you still not run 11's. Good luck though.

 

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notchback501993

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Lansing, IL

Jul 20, 2004

#12

• Jul 20, 2004

• #12

Js, Just going off of some simple math here. If my car is making 337HP at the flywheel at 5300RPM's and I put in a cam that brings the peak up to 5900 and have the breathing capabilities to support it, that would equate to 374HP at the flywheel(If I can still make the torque at 5900). Now taking that into account, plus the porting, exhaust, and weight reduction, driving technique, etc...

 

QDRHRSE

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Dec 31, 2002

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Palmdale, CA

Jul 20, 2004

#13

• Jul 20, 2004

• #13

Nay. If you run faster at all it will be a couple of tenths. New combos almost never run better right away. You will not be in the 11's- even if you get it all sorted out. It should run good- it did before, just not 11 second good. I would be very happy for you if you did get into the 11's but that's a tall order. Its not impossible though. Good luck.

 

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notchback501993

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Mar 9, 2003

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Lansing, IL

Jul 21, 2004

#14

• Jul 21, 2004

• #14

Come on people!

 

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notchback501993

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Mar 9, 2003

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Lansing, IL

Jul 24, 2004

#15

• Jul 24, 2004

• #15

Actaully going to the track tonight. Will post times later!

 

maverick0716

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Jan 12, 2002

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Chilliwack, BC, Canada

Jul 25, 2004

#16

• Jul 25, 2004

• #16

If you gain 20 rwhp you'll be in the 110.5 mph range from the previous 107.5 mph.

 

5.0 HOtrain

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May 20, 2001

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New Hampshire

Jul 25, 2004

#17

• Jul 25, 2004

• #17

Lets see some times

 

04sleeper

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Jun 22, 2002

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89

Dallas, TX

Jul 25, 2004

#18

• Jul 25, 2004

• #18

It's possible. I have a friend who was running consistent 12.20's. He went to the track in the winter and it was like 40 degrees out and had a 15 to 20 MPH tail wind. So he ripped the belt off and ran 11.98.

 

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notchback501993

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Mar 9, 2003

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Lansing, IL

Jul 25, 2004

#19

• Jul 25, 2004

• #19

Well, what a disappointment. The clocks got hit by lightning the previous weekend. The starting line had Crisco on it. But I did run 110.85 MPH. Only had 3 runs. First run I launched at 4000 and didn't even move. I spun, let off completely, and got back in it. I didn't get a timeslip on that run but the clocks said something like 13.40 at 109. Second run was a little better at 12.99, 1.96 60 ft.(terrible) and 108.8. The final run I had a another bad 60 ft (2.03) but got a 12.72 at 110.85. With 110.85 I should have been in the 12.20 range. I guess I will go back again on a better day. Didn't mess with timing or fuel pressure. I think I could coax another mile an hour or so out of it with some tuning. So yes I do believe the elevens are possible.

 

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notchback501993

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Lansing, IL

Aug 7, 2004

#20

• Aug 7, 2004

• #20

I just found something out. Somehow my motor had accidently been timed to 25 degrees of initial advance! I think we have a mile an hour or so left in this baby. The car was also running extremely lean, so when I go back to the strip, with slicks, I think the 11.99 is almost guaranteed!!!