| View previous topic :: View next topic |
| Author |
Message |
fiveoformula Member

Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
|
Posted: Mon Oct 08, 2007 6:11 pm Post subject: exhaust help |
|
|
well i just ordered the catback for my '88 tbi formula, i went with the 2.5'' mandrill bent Dynomax, i ordered it from my work (knecht's Auto Parts in Aloha, Oregon) i was wondering if anyone has had experience with it.
am i gonna have a bit more pick up or am i gonna be disappointed?
next i wanna attack the 2.73 rear end, any suggestions? _________________
'88 FORMULA |
|
| Back to top |
|
 |
Xophertony Rodeo Queen

Joined: 13 Oct 2005 Posts: 5306 Location: Portland, Oregon.
1988 Pontiac GTA
|
Posted: Mon Oct 08, 2007 6:29 pm Post subject: |
|
|
WELCOME TO THE CREW!
i can't say what the catback will do by itself, i installed headers when i did my catback. you will probably notice a difference. it will atlewast sound faster.
i live right up the street from there, i'm off 170th.
so tell us about yourself and your car. i saw you made a garage page, is that aloha highschools auto shoppe i see in the backround in a few of those photos? also i like your personalized plate.  _________________ 86' firebird (Junked in 2015). 88' GTA (sold in 2020).
| aaron_sK wrote: | | Hell, Tony drove his GTA to Cows a few years back with the pickup coil that came out in pieces. |

Last edited by Xophertony on Mon Oct 08, 2007 6:34 pm; edited 1 time in total |
|
| Back to top |
|
 |
alloy T56 Elitist

Joined: 25 Jan 2004 Posts: 1716 Location: Vancouver, WA
1987 Chevrolet Camaro IROC-Z
|
Posted: Mon Oct 08, 2007 6:32 pm Post subject: |
|
|
I've got a 305 TPI motor in my 87 and I went with a 3" cat back. I was not disapointed at all. I'm not sure if the 2.5" will give you the same results, but it has to be better than stock.
I had a 3.08 rear in my car and got a 3.42 from a wrecking yard, stuck a zexel posi in it and am very happy with it. I beleive now the U-Pull-It yards charge about $100 for a rear with a "core" charge. They wanted to charge me more if I took the drums with it, so you might want to consider pulling them off before paying for the rear.. There are lots of 3rd gens in the wrecking yards, pop the rear cover and count the teeth. You sould be able to find a 3.08, a 3.23, and with a loittle looking a 3.42. 3.73's seem a little tough to find. |
|
| Back to top |
|
 |
Al Hasse Member

Joined: 19 Nov 2005 Posts: 4379 Location: Bremerton, WA
1992 Chevrolet Camaro RS
|
Posted: Mon Oct 08, 2007 6:38 pm Post subject: |
|
|
Like Tony, I did mine with the headers, 3" all the way. Can't say it runs any better for now because I've got an exhaust leak to take care of. I know where it is too, just can't get a wrench on it.
BTW, welcome to the CREW  _________________ 92 Camaro
89 Camaro
 |
|
| Back to top |
|
 |
fiveoformula Member

Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
|
Posted: Mon Oct 08, 2007 6:40 pm Post subject: |
|
|
thanks for the welcome, i was turned onto this site by DBL TKE aka my friend Skyler.
im 17, go to Century High, work at Knecht's, ive had my Formula for a little over a year now, went thru a 700r4 already... i dream of an LT1 swap, keeping it mild and good for daily driving. _________________
'88 FORMULA |
|
| Back to top |
|
 |
Xophertony Rodeo Queen

Joined: 13 Oct 2005 Posts: 5306 Location: Portland, Oregon.
1988 Pontiac GTA
|
Posted: Mon Oct 08, 2007 6:45 pm Post subject: |
|
|
skyler is a cool guy. looks like your car is nicer then his... <skyler |
|
| Back to top |
|
 |
fiveoformula Member

Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
|
Posted: Mon Oct 08, 2007 6:49 pm Post subject: |
|
|
yea every says mines pretty when i park next to his Z
i met him having a rev contest in the aloha high school parking lot after school lol _________________
'88 FORMULA |
|
| Back to top |
|
 |
fiveoformula Member

Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
|
Posted: Mon Oct 08, 2007 7:22 pm Post subject: |
|
|
| alloy wrote: | I've got a 305 TPI motor in my 87 and I went with a 3" cat back. I was not disapointed at all. I'm not sure if the 2.5" will give you the same results, but it has to be better than stock.
I had a 3.08 rear in my car and got a 3.42 from a wrecking yard, stuck a zexel posi in it and am very happy with it. I beleive now the U-Pull-It yards charge about $100 for a rear with a "core" charge. They wanted to charge me more if I took the drums with it, so you might want to consider pulling them off before paying for the rear.. There are lots of 3rd gens in the wrecking yards, pop the rear cover and count the teeth. You sould be able to find a 3.08, a 3.23, and with a loittle looking a 3.42. 3.73's seem a little tough to find. |
which catback did u get? and which "u pull it" did you find the rear end? _________________
'88 FORMULA |
|
| Back to top |
|
 |
aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
|
Posted: Mon Oct 08, 2007 10:05 pm Post subject: |
|
|
If you sticking with the 700R4, go with a lower gear like a 3.45. 3.73's with that high first on the street gets old fast. Perfect for a T-56 though.
Nice looking Bird BTW.  |
|
| Back to top |
|
 |
alloy T56 Elitist

Joined: 25 Jan 2004 Posts: 1716 Location: Vancouver, WA
1987 Chevrolet Camaro IROC-Z
|
Posted: Tue Oct 09, 2007 3:56 am Post subject: |
|
|
I bought my catback about 15 years ago. Don't remember who from.
Just start checking the U-Pull-It yards. Got mine at the Vancovuer yard, but you neven know what will be there............like a 4 bolt main 350 just sitting on the ground
Most of them have third gens. It's just finding one with the gear ratio you want. 3.08's and 3.23's are easy to find. It's the 3.42's and 3.73's that are harder to come by. |
|
| Back to top |
|
 |
blue89 Member

Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
|
|
| Back to top |
|
 |
Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
|
Posted: Tue Oct 09, 2007 9:03 am Post subject: |
|
|
| In conjunction with the catback... headers and the rear up to a 3.42 is where you' notice the fun factor go up! |
|
| Back to top |
|
 |
83Z28BlackBetty Bam-Ba-Lam

Joined: 13 Mar 2006 Posts: 2083 Location: Aloha
1983 Chevrolet Camaro Z/28
|
Posted: Tue Oct 09, 2007 11:05 pm Post subject: |
|
|
welcome
~JAKE _________________ 1983 Z-28 5.7 LT1, T56, Headman headers, BW 9 Bolt Posi Disc, WS6 suspension
 |
|
| Back to top |
|
 |
STEEL Member
Joined: 22 May 2007 Posts: 417
1991 Chevrolet Camaro RS
|
Posted: Wed Oct 10, 2007 1:44 am Post subject: |
|
|
Ha Ha! I might not be the only underage person at Cows next year!
Good to see another High schooler in the group! |
|
| Back to top |
|
 |
fiveoformula Member

Joined: 08 Aug 2007 Posts: 1799 Location: OR
1988 Pontiac Formula
|
Posted: Wed Oct 10, 2007 2:20 pm Post subject: |
|
|
| STEEL wrote: | Ha Ha! I might not be the only underage person at Cows next year!
Good to see another High schooler in the group! |
Cows?? underage? _________________
'88 FORMULA |
|
| Back to top |
|
 |
chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
|
Posted: Wed Oct 10, 2007 6:19 pm Post subject: |
|
|
| Umm. there are no underage people at cows. Remember that. Or its chocalte milk for you. |
|
| Back to top |
|
 |
izcain 9sec Club
Joined: 09 Sep 2006 Posts: 1306 Location: Port Angeles WA
1983 Chevrolet Camaro Z/28
|
Posted: Wed Oct 10, 2007 7:33 pm Post subject: |
|
|
Welcome to the crew man! _________________
1983 Z28 383 + 201ci more = New Heart for this season!
9.17 @ 148 |
|
| Back to top |
|
 |
Quasi-Traction "I have petals"

Joined: 24 Oct 2005 Posts: 3873 Location: stumptown
1986 Chevrolet Camaro Berlinetta
|
Posted: Thu Oct 11, 2007 2:11 pm Post subject: |
|
|
| chevymad wrote: | | Umm. there are no underage people at cows. Remember that. Or its chocalte milk for you. |  _________________
 |
|
| Back to top |
|
 |
STEEL Member
Joined: 22 May 2007 Posts: 417
1991 Chevrolet Camaro RS
|
Posted: Fri Oct 12, 2007 2:17 pm Post subject: |
|
|
| Lol. I will stick to my root beer for a few more years, lol. |
|
| Back to top |
|
 |
DBL_TKE Member

Joined: 28 Feb 2007 Posts: 1505 Location: Aloha, OR
1991 Chevrolet Camaro Z/28
|
Posted: Mon Oct 15, 2007 10:51 pm Post subject: |
|
|
| Xophertony wrote: | skyler is a cool guy. looks like your car is nicer then his... <skyler |
yeah well uh mines faster. Or should I say "less slower" Just makes mine more of a sleeper.
| STEEL wrote: | | Lol. I will stick to my root beer for a few more years, lol. |
yeah, I'm sure  _________________ Richmond 3.73 posi| 36/24 sway bars | SLP LM2 | Koni's | Ground Control 800/200 | Y2K wheels | Dyno Don headers & Y-pipe | airfoil | BBK underdrive pulleys | Raised strut mounts | Extended ball joints | LCARB'S
 |
|
| Back to top |
|
 |
|