[DeTomaso] California engine swap exemption question

[Pantdino]

What is the build date of your car?
If it is late enough in 1973 it may have been built to 1974 model year specs

Jim




-----Original Message-----
From: doug351c <doug351c at gmail.com>
To: John Buckman <jb841 at cox.net>; detomaso at realbig.com
Sent: Sat, Dec 18, 2010 11:31 am
Subject: Re: [DeTomaso] California engine swap exemption question


I have a correction for you.  My 1973 came with an EGR system which I still
ave in a box.
Doug Braun
lue 73L 5505
-----Original Message-----
rom: detomaso-bounces at realbig.com
mailto:detomaso-bounces at realbig.com]On Behalf Of John Buckman
ent: Friday, December 17, 2010 7:55 PM
o: detomaso at realbig.com
ubject: Re: [DeTomaso]   California engine swap exemption question

'm going to limit this to Fords, but most (if not all) should pertain to
ther makes.
There were several factors that were used to determine whether or not a car
as delivered with a smog pump (in California).
1.   The county where the car was sold.  Some California counties did not
equire smog checks.
.   If the manufacturer could not get an engine to pass a smog check , then
 smog pump was added.
.   The smog pump was an option that could be ordered on some cars.
The Ford era Panteras never had a smog pump.  The worst that it got was an
GR system in 1974.
Here is some interesting info form the Ford FE Engine Forum Archives:
Thermactor (Ford's smog pump) became mandatory in 1966 on some FE cars sold
n California and New York due to the
rogressive automobile pollution control of those states.  The California
nd New York engines which required Thermactor
sually had performance cams, such as the 390GT amd 428PI ca,s, as these
ams had a valve overlap large enough to
ermit raw fuel to pass straight through to the exhaust without being
urned, and richer-jetted carbs which promoted the
eneration of carbon monoxide, creating unsatisfactory emissions levels.
he Thermactor pump injected a tiny amount of
ir into the exhaust ports to promote complete combustion of the unburned
uel, as well as combust carbon monoxide which
esults from the rich fuel-air mixture.  Some counties in California
ctually required Thermactor on all FE cars sold in 1966
nd 1967 due to particularly bad air pollution issues.  When not mandatory,
hermactor was a $46.00 option available on
very FE sold in the US, and was priced "at cost", not a profit for Ford.
o you would occasionally find Thermactor equipped
Es in unexpected circumstances, and it would be listed on the window
ticker.
In 1968, the California and New York emissions laws were basically adopted
y the Feds, making Thermactor mandatory
n all performance-cammed FE cars sold in the 50 states.  This is why the
27 inherited the hydraulic cam and Thermactor
or 1968, since it was the only way it would pass emissions, and 500
ydraulic 1968 427s were needed for NASCAR
omologation rules.  Note that 427-4V Fairlanes failed California emissions
aws in 1966 and 1967, but a loophole in the
aw exempted twin-carb V-8s from emissions regulations, so 427-8V (dual
uads) Fairlanes were legal for sale in California.
his loophole also applied to 1967 Shelby Mustangs sold in California, which
ould run a solid cammed 428 without
missions controls if twin carbs were part of the package.
John
_______________________________________________
Detomaso Forum Managed by POCA
Archive Search Engine Now Available at http://www.realbig.com/detomaso/
DeTomaso mailing list
eTomaso at list.realbig.com
ttp://list.realbig.com/mailman/listinfo/detomaso