convertible mach 1 dyno day

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12-19-2008, 11:40 PM

#21

67fire

2nd Gear Member

Join Date: Nov 2008

Location: Nevada

Posts: 221

Almost forgot...

Z06's and Vipers are fun to watch!
(The owners faces!) LMFAO!

Eric

12-19-2008, 11:52 PM

#22

00_buck

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Join Date: Jul 2007

Location: GA

Posts: 187

Quote:

Originally Posted by rygi23

I think your fwhp is more like 360 (360 x .85 = 306). That's still 100 hp over stock. You doin' alright in my book. Nice car bro, and sounds great too.

382 x .80 = 306. .85 is for a stick shift but its an automatic so you times it by .80 because of the 20% drivetrain loss. So more like 122 hp gain. if it was a stick it would be getting about 325 rwhp.

Last edited by 00_buck; 12-19-2008 at 11:55 PM.

12-20-2008, 11:13 PM

#23

rygi23

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Join Date: Dec 2007

Location: Maryland

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Quote:

Originally Posted by 00_buck

Ah, gotcha. Thx for the clarification. Either way, one nice street/strip auto stang. You ever think about 3.73s? I think they'd yield a good gain for no drop in daily drivability.

12-21-2008, 09:53 AM

#24

00_buck

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Quote:

Originally Posted by rygi23

Ah, gotcha. Thx for the clarification. Either way, one nice street/strip auto stang. You ever think about 3.73s? I think they'd yield a good gain for no drop in daily drivability.

I had a 4.10 and it was very impractical. I may switch to a 3.73 but I can't help but think that it'll be as impractical as that 4.10 was. I guess it can't be too bad since Ford has a 3.73 option on the new mustangs straight out the factory. How much more would my rpms go up during normal cruising at say 70 mph? with the 4.10 I was at about 3k rpms cruising and 3.55 i'm more like 2300 rpms.

12-21-2008, 03:00 PM

#25

GTRACER88

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Join Date: Dec 2007

Location: Houston, Tx

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Quote:

Originally Posted by 00_buck

and i don't know if it makes a big difference but i had a bad 02 sensor on the front side when i dynoed and the guy says its drowning out the power. I replaced it and my car "seems" faster but I don't know the hp its putting out with that fixed. either way I don't want to run more boost...

No it doesnt make a difference at WOT. He lied to you. O2 sensor will just make you have bad MPG and run like crap under regular rpm's. Its in your head. You can run much more boost, so do it.

12-21-2008, 04:20 PM

#26

Stone629

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Join Date: Feb 2007

Location: North Carolina

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Quote:

Originally Posted by 00_buck

I only jumped 300 rpms going from 3.55s to 4.10s in my 5spd. Still got 24mpg at 70 mph.

12-21-2008, 07:18 PM

#27

00_buck

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Quote:

Originally Posted by Stone629

I only jumped 300 rpms going from 3.55s to 4.10s in my 5spd. Still got 24mpg at 70 mph.

thats because you have a 5 spd. In a 4 spd automatic, gears it goes up more than 300 rpms. In a six speed a 4.10 would barely make a difference. But I have a 4 speed.

12-21-2008, 08:01 PM

#28

rygi23

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Join Date: Dec 2007

Location: Maryland

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Quote:

Originally Posted by 00_buck

I understand your concern, mine's a daily driver as well. Being much closer to the 3.55s than the 4.10s, the 3.73s @ 70 would put you up as little as 200 maybe 300. Hard to tell exactly b/c the gearing is a bit steaper than our .62 5th gear. I think the 3.73s would do ya well, but it's your DD and I know how that stuff goes.