74 Big Block Smog Question
Thread Starter
Racer
Joined: Feb 2007
Posts: 273
Likes: 0
From: NAPLES FLORIDA
74 Big Block Smog Question
ok...heres one for the experts...
i recently purchased a completely restored smog setup for my 1974 LS4 convertible...as i understand it...everything is correct for my car...except the actual smog housing as it has a automatic transmission part number - instead the correct part number for a 4 speed....
was all i could find close at the time...
regardless..everything else is correct and it is a truly beautiful unit - except - and will really look great on my retored car except -
i think i dont need it...
from what i understand...my engine pad is stamped "CWM" which is correct for a 4 speed ls4...but if it were a smog car...it would be stamped (i think) CMT?
anyway...hopefully somebody knows...cause if i dont need it...and i hope i dont....its for sale -
and it is the nicest restored unit i have ever seen....also..it has all the correct hoses and clamps and brackets...
RR
i recently purchased a completely restored smog setup for my 1974 LS4 convertible...as i understand it...everything is correct for my car...except the actual smog housing as it has a automatic transmission part number - instead the correct part number for a 4 speed....
was all i could find close at the time...
regardless..everything else is correct and it is a truly beautiful unit - except - and will really look great on my retored car except -
i think i dont need it...
from what i understand...my engine pad is stamped "CWM" which is correct for a 4 speed ls4...but if it were a smog car...it would be stamped (i think) CMT?
anyway...hopefully somebody knows...cause if i dont need it...and i hope i dont....its for sale -
and it is the nicest restored unit i have ever seen....also..it has all the correct hoses and clamps and brackets...
RR
Thread Starter
Racer
Joined: Feb 2007
Posts: 273
Likes: 0
From: NAPLES FLORIDA
so what is the difference between a california smog car CWT (454 4- speed) and a non-california smog car CWM (454 4-speed) car?
i mean...if they all came with smog...then why the cali designation?
i mean...if they all came with smog...then why the cali designation?
Le Mans Master
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
so what is the difference between a california smog car CWT (454 4- speed) and a non-california smog car CWM (454 4-speed) car?
i mean...if they all came with smog...then why the cali designation?
i mean...if they all came with smog...then why the cali designation?
As model years rolled by, the emission requirements got stricter and four-speed motors had a harder time meeting the requirements until in 82...there were no four-speeds produced.
Both the auto and four-speed used the same emission certification ZJ (code) which is another indicator of power team configuration.
Melting Slicks
Joined: May 2000
Posts: 2,125
Likes: 9
From: Crescent City, CA
