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CorvetteforumC3
CorvettesCatalytic
Converter Recommendation?

terryrudy
Senior
Member

1194 posts [100%]
Fremont
CA

Catalytic Converter
Recommendation?

10:29
AM 7/15/2002

Hi, I'm going to need to get a couple high-flow
cats to throw on my exhaust real soon now and I'd like to
order some today to take advantage of the Summit deal. Anyone
have any recommendations? I have dual 2.5" exhaust and would
like to go dual-cats (not EXACTLY legal, but close
enough).
thanks!
-terry
_______

1977
Corvette L48 | 1999 Mitsubishi Eclipse Turbo | Corvettefaq.com

78RedShark
Senior
Member

135 posts [100%]
Toronto
Ontario

Re: Catalytic
Converter Recommendation? (terryrudy)

10:33
AM 7/15/2002

Suggestion - move to Ontario, Canada...no
emissions testing for anything older than 1981.
_______

1978 L-48 TH350,
numbers match, K&N Air Filter, Dual Exhaust
Red /
Oyster cloth

mountainmotor
Senior
Member

913
posts [100%]

Re: Catalytic
Converter Recommendation? (terryrudy)

10:46
AM 7/15/2002

The Cartech Brand is reported to flow with or
out flow the expensive random Technologies Cat and cost a bit
less,$59.95

CALL MUFFLER TECH TOLL FREE 1-877-722-3784.

_______

1974 4 speed Coupe-Classic White -
Pennzoil and Synergyn oils

mrbeaubo
Senior
Member

568 posts [100%]
Cedar Hill
TX

Re: Catalytic
Converter Recommendation? (mountainmotor)

10:49
AM 7/15/2002

What about the CatCo Converters on
summit?

Fevre
Senior
Member

2070
posts [100%]
Ann Arbor MI

Re: Catalytic
Converter Recommendation? (terryrudy)

10:53
AM 7/15/2002

Now if I where you I would buy the converters
put them on for testing and then take them off when I did some
off roading with it. You have to decide what you def of 'off
road' is.

Jman
Senior
Member

623 posts [100%]
Spring
TX

Re: Catalytic
Converter Recommendation? (78RedShark)

11:04
AM 7/15/2002

quote:

Suggestion - move to Ontario, Canada...no emissions testing
for anything older than 1981.

Yeah, but then you have to put up with all those Canadians.
Pretty soon he'll start talking like Terrance and Philip.
_______

L83 Crossfire, 305 hp/385 ftlb 2-Tone
Silver/Burgundy

Larry82
Senior
Member

2004
posts [100%]
Missouri City TEXAS

Re: Catalytic
Converter Recommendation? (terryrudy)

12:12
PM 7/15/2002

Car Sound

Biker
Senior
Member

221
posts [100%]
Naperville IL

Re: Catalytic
Converter Recommendation? (Larry82)

2:17
PM 7/15/2002

I use a high flow CatCo converter for emissions
testing only. After the test I install a test pipe that I
purchased off Ebay. Makes me wonder if Chevy had this in mind
when they went with flanged joints at the catalytic.

terryrudy
Senior
Member

1194 posts [100%]
Fremont
CA

Re: Catalytic
Converter Recommendation? (Biker)

3:00
PM 7/15/2002

I think in the interest of saving
time/money/possible exhaust leaks I'm going to leave the high
flow cats in there. I think with the dual 2.5s, I got enough
flow for my relatively mild motor. So hopefully dual cats
won't rob me of too much. Thanks for the suggestions guys.

-terry
_______

1977
Corvette L48 | 1999 Mitsubishi Eclipse Turbo | Corvettefaq.com

Silvr77
Senior
Member

1275 posts [100%]
Wildwood
IL

Re: Catalytic
Converter Recommendation? (mountainmotor)

4:16
PM 7/15/2002

quote:

The Cartech Brand is reported to flow with or out flow the
expensive random Technologies Cat and cost a bit
less,$59.95
CALL MUFFLER TECH TOLL FREE 1-877-722-3784.

Just bought a set of these. They are less
than half the size of stock, and when held up to sunlight... I
can see right through em. All stainless body, with aluminum
heat shield. Good Stuff!!!!
Eddie
_______

Silvia..'77
#'s Match L-48 Auto PS/PB/AC/PW/TILT/TEL
ProTopline 180
64cc..Performer EPS Intake..750Holley..Comp custom grind
cam..Comp split ratio roller tips..Cloyes roller..Trick Flow
Moly Push Rods...Dynomax..Flowmasters..
Mercury
Mountaineer, my daily snowmobile
Dyna..99 Harley LowRider

terryrudy
Senior
Member

1194 posts [100%]
Fremont
CA

Re: Catalytic
Converter Recommendation? (Silvr77)

5:21
PM 7/15/2002

Eddie, sounds good!
Do you have a part # or
any other specific info so I can just call and get the right
ones?
thanks!
-terry
_______

1977
Corvette L48 | 1999 Mitsubishi Eclipse Turbo | Corvettefaq.com

Schmucker
Senior
Member

342 posts [100%]
EC WI

Re: Catalytic
Converter Recommendation? (78RedShark)

2:56
AM 7/16/2002

quote:

Suggestion - move to Ontario, Canada...no emissions testing
for anything older than 1981.

Move to Wisconsin, most counties have no emmissions
testing. Period.
_______

'77 L48 Auto
Father's
Corvettes- '84 slightly modified, '64 10 second drag-soon to
be a Pro Street

Silvr77
Senior
Member

1275 posts [100%]
Wildwood
IL

Re: Catalytic
Converter Recommendation? (terryrudy)

8:10
AM 7/16/2002

[Quote]The Cartech Brand is reported to
flow with or out flow the expensive random Technologies Cat
and cost a bit less,$59.95
CALL MUFFLER TECH TOLL FREE
1-877-722-3784.[Quote]

Mountainmotor said it all. Just call them toll free,
explain what you have, and the guy will fix you up. I got mine
in 5 working days, cause they are located in California and
I'm in Illinois. Good Luck....
Eddie

_______

Silvia..'77 #'s Match L-48 Auto
PS/PB/AC/PW/TILT/TEL
ProTopline 180 64cc..Performer EPS
Intake..750Holley..Comp custom grind cam..Comp split ratio
roller tips..Cloyes roller..Trick Flow Moly Push
Rods...Dynomax..Flowmasters..
Mercury Mountaineer, my
daily snowmobile
Dyna..99 Harley LowRider

gmcclurg
Junior
Member

8
posts [100%]
Crofton MD

Re: Catalytic
Converter Recommendation? (Silvr77)

11:18
AM 7/16/2002

OK, this will help get more exhaust out, but
what are you doing to get more air in? I have a very stock 77
with the air pick up over the radiator. Are you just adding a
K & W round filter to repalce the stock paper one or is
anyone doing anything else? Am I better off removing the
plastic pick up and just mounting an open filter on top of the
carb?

adam
Senior
Member

338 posts [100%]
Allen, TX, USA

Re: Catalytic
Converter Recommendation? (gmcclurg)

2:23
PM 7/16/2002

Dynomax makes a dual in, dual out (2.5") I
believe, maybe 3" too.
Would satisfy the requirement of 1
cat...

As good as true duals? Don't know.
_______

Adam
Krolnik
81 4sp RED

mountainmotor
Senior
Member

913
posts [100%]

Re: Catalytic
Converter Recommendation? (adam)

2:50
PM 7/16/2002

I saw a test once of the Random cats.They were
stuck right on the end of the collectors of a 600 HP Shotgun
motor,,cost it 12 hp.Not really that much in my opinion
especially with a 250-300 hp motor.Still need very good
flowing mufflers though
_______

1974 4 speed
Coupe-Classic White - Pennzoil and Synergyn oils

Ryan77
Senior
Member

157
posts [100%]
Northampton Ma

Re: Catalytic
Converter Recommendation? (mountainmotor)

4:51
PM 7/16/2002

To get more air in I used the K&N 14"x3"
filter, Holley carb, and Edelbrock intake.=
_______

Holley Street Avenger
670 cfm carb, Holley 110 GPH fuel pump, Comp Cams 268XE,
Edelbrock Peformer RPM intake manifold, SSBC calipers with
stainless steel braided hoses, K&N drop base air cleaner,
4 speed, 3.36 gears.
Much, much more coming soon
"The Bull**** stops when the green
light
drops"

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