Weird Question

ahhjaws

New Member

Dec 31, 2003

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Fort Collins, CO

Jan 14, 2004

#1

• Jan 14, 2004

• #1

Ok, here it goes. I purchased a 97 GT last week. It was a repo from the bank, so I can't contact the previous owner. I know he's done a lot work to it, but since I don't know too much about engines, I can't say as to what he did to it. My friend has a 95 z28 Camaro with the 350, I'm guessing LT1. I was able to stay with him, slightly beat him off the line and at highway speeds. This to me seems like there'd have to be something done to the engine. I've read up on this +99 head swap. Are there any differences someone could point out b/w the 2 to see if he did that? It looks like he has the adjustable timing, probably a chip too. To find out the gearing I guess I'll have to get in the difs. Any other possiblities? It kind of sounds like a dumb question to me. If someone asks what I have under there, I can't say anything. lol

 

Beau

Founding Member

Jan 29, 2000

3,050

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San Diego

Jan 14, 2004

#2

• Jan 14, 2004

• #2

you don't hear any whine from say a supercharger do you?



it looks like you've got an aftermarket MAF and an inlet pipe...at the very least...

 

ahhjaws

New Member

Dec 31, 2003

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Fort Collins, CO

Jan 14, 2004

#3

• Jan 14, 2004

• #3

heh, that was what I looked for first, nope no supercharger. lol

 

Beau

Founding Member

Jan 29, 2000

3,050

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San Diego

Jan 14, 2004

#4

• Jan 14, 2004

• #4

your throttle body and plenum look straight from the factory

 

ahhjaws

New Member

Dec 31, 2003

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Fort Collins, CO

Jan 14, 2004

#5

• Jan 14, 2004

• #5

hmm, maybe it's just a fluke. Or my friend didn't give it all he could have. it has dual flowmasters with an H pipe too, but that probably wouldn't do that much. I guess I'll just figure it out somehow.

 

KaPPaBaLL

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Nov 28, 2003

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BAYAREA

Jan 14, 2004

#6

• Jan 14, 2004

• #6

if it's an o/r h-pipe it does much. hmm looks like you have hotckis c/c plates as well. suspension mods?

 

Beau

Founding Member

Jan 29, 2000

3,050

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San Diego

Jan 14, 2004

#7

• Jan 14, 2004

• #7

i'd bump this tomorrow during the day if i were you..that way more people will see it..

 

JonJon

Founding Member

Aug 16, 2002

4,801

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back in Marylands

Jan 14, 2004

#8

• Jan 14, 2004

• #8

Strut tower brace. Timing adjuster. Looks like the pulleys might be changed too (in the TA pic)

 

decoy562

New Member

Oct 9, 2003

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Acworth, GA

Jan 14, 2004

#9

• Jan 14, 2004

• #9

It looks to me like pulleys, T/A, strut tower brace, air intake, and hotchkins cc plates.

 

J

JoeySperz

Founding Member

Sep 11, 2002

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Mountainside, NJ

Jan 14, 2004

#10

• Jan 14, 2004

• #10

yellow top battery with sub wire...

 

ahhjaws

New Member

Dec 31, 2003

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Fort Collins, CO

Jan 14, 2004

#11

• Jan 14, 2004

• #11

Thanks for everyones help. Since that pic, I've had to get a new battery, and I took out the sub wire. I'm not too much of a "blow out the windows" type of guy.

So would you guys think that these mods are considered "good". Please bear with me, since I'm learning. What exactly do those mods do? Thanks in advance.

 

forpit2000gt

Founding Member

Jun 30, 2002

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Columbia, SC

Jan 14, 2004

#12

• Jan 14, 2004

• #12

is the car lowered? look under the rearend and take a look at the Upper and Lower control arms? what color are they or any markings? What is your rpm in 5th at 70 mph?

 

ahhjaws

New Member

Dec 31, 2003

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Fort Collins, CO

Jan 14, 2004

#13

• Jan 14, 2004

• #13

I'm pretty sure it's lowered a little, maybe 1-2 inches. I can't quite see underneath to well, but I'll check again tomorrow when its light out. I took it out tonight and ran at 2000 rpm in 5th at 70 mph.

 

forpit2000gt

Founding Member

Jun 30, 2002

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Columbia, SC

Jan 15, 2004

#14

• Jan 15, 2004

• #14

2000 rpm at 70 mph is 3.27 I think. Those engineers with all the calcs get this one. You don't have 3.73 or 4.10s for sure.

 

D

DerekStangGT

My package is in the mail!

Feb 18, 2003

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Jan 15, 2004

#15

• Jan 15, 2004

• #15

forpit2000gt said:

2000 rpm at 70 mph is 3.27 I think. Those engineers with all the calcs get this one. You don't have 3.73 or 4.10s for sure.

Click to expand...

dont 98s and under come stock with 3.08s

 

mogs01gt

Founding Member

Jul 22, 2002

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Ohio

Jan 15, 2004

#16

• Jan 15, 2004

• #16

yeah with 3.08s he would be around 70 but if it had 3.73 and no chip or speed cal the speedometer could be off.


do you have 16 or 17 inch rims?

 

MineralG2k2GT

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Feb 9, 2003

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Lowell, MA

Jan 15, 2004

#17

• Jan 15, 2004

• #17

Some one told me a trick about gears becuase Ihad the same problem when I bought my car used....

In third gear go 56 mph...whatever your Tach reads is what gears you have...it actually works too!!!

 

D

DerekStangGT

My package is in the mail!

Feb 18, 2003

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Jan 15, 2004

#18

• Jan 15, 2004

• #18

MineralG2k2GT said:

Some one told me a trick about gears becuase Ihad the same problem when I bought my car used....

In third gear go 56 mph...whatever your Tach reads is what gears you have...it actually works too!!!

Click to expand...

i will definitly try this. it sounds like tho, but i will give it a go

 

H

Huck

New Member

Sep 3, 2003

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Twin Cities

Jan 15, 2004

#19

• Jan 15, 2004

• #19

DerekStangGT said:

i will definitly try this. it sounds like tho, but i will give it a go

Click to expand...

It's definitely BS - at least as far as working on all cars, with all tires, and all transmissions. Though it's always possible it works for a specific model car with specific tires (for instance, if your mustang has a 1.33-1.35:1 3rd gear, and 25.7 inch diameter tires).

Third gear is not the same ratio in all transmissions...unless they're 3 speeds, in which case it's always 1:1. Just like 4th gear is always 1:1 in 4, 5, and 6 speeds. The highest gear that isn't an underdrive gear is always 1:1. So it might work with some transmissions...but not with others. The other variable is tire diameter. ALL this is going to affect the engine speed at any given vehicle speed. In 4th gear (1:1), or 3rd gear in a 3 speed, with a specific tire diameter, there is going to be a speed where the tach equals the gear ratio, but it's going to vary from one tire diameter to another. It's going to be the speed at which the tire is turning 1000 rpm. 1000 rpm, times the rear gear ratio, through a 1:1 gear in the transmission gives you the engine speed equal to the rear gear ratio, with a decimal between the hundreds and thousands places.

For a modern Mustang with 25.7 inch diameter tires(245/45-17's, for example), you reduce the diameter a couple percent for load compression, and 1000 rpm occurs at 25.7 x .98 x 3.1416 (in./rev) x 1000(rev/min.) / 12 (in./ft.) / 5280 (ft./mi.) x 60 (min./hr.) = 74.9 mph in 4th gear. Obviously, it'll be different for every different tire diameter...but this will ALWAYS work.

In third gear, you'd have to divide this number by the 3rd gear ratio, which you'd have to know before hand, which varies from car model to car model, and sometimes from year to year (not every year, obviously, but occasionally). Whereas 4th gear is ALWAYS 1:1.

Just for clarification.

 

JonJon

Founding Member

Aug 16, 2002

4,801

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back in Marylands

Jan 15, 2004

#20

• Jan 15, 2004

• #20

DerekStangGT said:

dont 98s and under come stock with 3.08s

Click to expand...

Option was 3.27 I think...