decibel meter app for my iphone driving around. Car seems to say pretty consistent in the cabin.
Hello
I read this topic, and wonder if somebody would advice me on the "best" exhaust combo (no 180 headers) for my gr4 project please
Holley Dominator, 351cu, single carb, 4v heads, magnum 294 comp cams
Best regards
Philippe
I read this topic, and wonder if somebody would advice me on the "best" exhaust combo (no 180 headers) for my gr4 project please
Holley Dominator, 351cu, single carb, 4v heads, magnum 294 comp cams
Best regards
Philippe
If you are attempting to assemble an authentic appearing 1972 Group 4 engine, duplicating those built by Bud Moore Engineering, the GTS headers would be the correct ones.
Hall Pantera, Paramount California
If you want the best performing Pantera headers money can buy contact Pat Mical:
Performance Automotive Technology, Tyngsboro Massachusetts
Hall Pantera, Paramount California
If you want the best performing Pantera headers money can buy contact Pat Mical:
Performance Automotive Technology, Tyngsboro Massachusetts
He doesn't mention, Pat Michal, the headers on his web page, but as far as I know he is the only one who has bothered to build a real collector into the GTS headers?
A 3" collector is necessary to make the headers scavenge. That is one of the benefits of fabricated tube headers.
It would be interesting to add a thread to this on what the decibel level readings are that everyone is getting from their systems, EVEN STOCK!
With the availability of the free sound level apps for smart phones, this is a piece of cake.
At this point just saying, stock, a little louder, etc, can be put into numbers so that EVERYONE has a reference to what can and can not be done sound wise?
I'm getting flack from people who are just looking at the exhausts and telling me they are illegal. They haven't even heard them run.
I don't know where that is coming from since I keep looking high and low and can't find one violation in the statutes.
It might simply be that people don't believe this is a production '73 model year car? They want to know where the catalytic converters and the air pump is?
Anyone out there that has experienced being stopped for "roadside examination" on their cars like the CHiPs still do occasionally in CA?
A 3" collector is necessary to make the headers scavenge. That is one of the benefits of fabricated tube headers.
It would be interesting to add a thread to this on what the decibel level readings are that everyone is getting from their systems, EVEN STOCK!
With the availability of the free sound level apps for smart phones, this is a piece of cake.
At this point just saying, stock, a little louder, etc, can be put into numbers so that EVERYONE has a reference to what can and can not be done sound wise?
I'm getting flack from people who are just looking at the exhausts and telling me they are illegal. They haven't even heard them run.
I don't know where that is coming from since I keep looking high and low and can't find one violation in the statutes.
It might simply be that people don't believe this is a production '73 model year car? They want to know where the catalytic converters and the air pump is?
Anyone out there that has experienced being stopped for "roadside examination" on their cars like the CHiPs still do occasionally in CA?
Hello
anybody to identify my exhaust please ?
regards
Philippe
anybody to identify my exhaust please ?
regards
Philippe
Well, they are not stock. They look rougher than my GTS headers. Mine may have been repops. They did not have the tooling marks in the tubes like yours do.
They maybe original factory gts headers by the original vendor? They are definitely tri-y's.
As such they are giving away about 30hp on the top end but provide more low end torque off of idle.
They work best on a basically stock engine. They do not work well on a high performance/race engine.
They maybe original factory gts headers by the original vendor? They are definitely tri-y's.
As such they are giving away about 30hp on the top end but provide more low end torque off of idle.
They work best on a basically stock engine. They do not work well on a high performance/race engine.
quote:Anyone out there that has experienced being stopped for "roadside examination" on their cars like the CHiPs still do occasionally in CA?
Doug, I haven't had any problems with CHP in So.Cal. I drive both my 67 mustangs and pantera on weekends mostly. No issues what so ever with the CHP. The BAR does set up a road side random smog inspection complete with dyno but I have read that its voluntary.
I suspect it will get more and more difficult to drive these cars as the years pass.
This is a copy of the MidengineMike build with a 284 hyd roller cam... I also cut the collector off the headers and replaced it w/an opened up ball collector...
https://www.youtube.com/watch?v=nic5OQCFCus
https://www.youtube.com/watch?v=nic5OQCFCus
Does anyone know the actual primary tube diameter of the Wilkinson headers and also the diameter of the exhaust pipes? I have read and heard conflicting measurements. Thanks.
Primaries are 2" OD
tail pipes are about 2-3/8" OD.
tail pipes are about 2-3/8" OD.
Thanks George.
George is correct on the primaries. The exhaust pipes are actually 60mm (2.362"); tail pipes (tips) are 70mm (2.75").
Wilkinson also sold (as a set) stainless steel headers and mufflers. These were also available in mild steel. Primaries are 45mm (1.77"); exhaust pipes are 60mm (2.362"); tail pipes (tips) are 3".
I don't know what he is currently selling.
John
Wilkinson also sold (as a set) stainless steel headers and mufflers. These were also available in mild steel. Primaries are 45mm (1.77"); exhaust pipes are 60mm (2.362"); tail pipes (tips) are 3".
I don't know what he is currently selling.
John
Thanks John. How is the quality of his stainless exhaust?
I visited Steve recently. He is out of stock on his exhaust system presently.
quote:How is the quality of his stainless exhaust?
It seems to be ok. As with any polished SS exhaust, it will require occasional cleaning.
As a reminder, always make sure that the flange is FLAT before bolting the headers to the cyl head.
John
It is good to know that the Wilkinson exhaust is decent, however the system is sold as a whole, and I don't want the headers.
I have tentative plans to make a custom stepped stainless header with a 3" collector and a 2.75" choke. Stainless Headers built a set for one of my other cars and did a great job.
I have tentative plans to make a custom stepped stainless header with a 3" collector and a 2.75" choke. Stainless Headers built a set for one of my other cars and did a great job.
Attachments
you got it, nice
As stainless exhaust goes, it requires alote of maintenance, but if the intention is to build 180,s, stainless radiates alote of heat!
quote:Originally posted by "72 GTS:
Hello
anybody to identify my exhaust please ?
regards
Philippe
C-302 B heads
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