exhaust \ headers
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
I just bought these, haven't installed them yet so I can't speak to how they perform but I do like the way the collector seals...
http://www.jegs.com/i/Hedman/500/68308/10002/-1
http://www.jegs.com/i/Hedman/500/68308/10002/-1
Team Owner
Joined: Jan 2006
Posts: 39,390
Likes: 171
From: Into the Mystic And yet, despite the look on my face, you're still talking TN
St. Jude Donor '09 thru '25
Here are the McJacks on my 78 L-82 4 speed:
[IMG]
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I had mine for about 7 years. The McJacks helped power throughout the full RPM range versus the cast iron manifolds but probably slightly less than LTH's. They are a really nice piece and well suited for the street.
[IMG]
[/IMG]I had mine for about 7 years. The McJacks helped power throughout the full RPM range versus the cast iron manifolds but probably slightly less than LTH's. They are a really nice piece and well suited for the street.
could you get the bolts in without having to use a BFH?
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
My experience has been that with the stock installation in my 77 I experienced more heat in the cabin that I did once I converted to side pipes and ceramic coated long tube headers.
Since the side pipes run the exhaust all out to the side and it does not pass under the length of the cabin this may be part of the reason for less heat in the cabin or maybe even most of it.
I have straight plug holes on my heads, with the Hooker headers and ceramic coating I have had no problems burning off spark plug boots or super hot under hood heat problems ( just the regular hot under hood temp for a C3 lol)
I also installed insulation for both heat and sound under the carpet for the entire floor. Once that was done it made the car into a cooler, even on the hottest days, and this is a black 'vette.
With a normal installation the exhaust runs the entire length of the cabin and this may be a significant source of heat sink into the car rather than just the headers.
The heat control is a multi step process not just a one "step fixes all" solution.
As far as power goes, the LTH headers are great out on the highway when I open it up.
If there is a loss in town driving, I'm not noticing it.
I can say definitively that they are significantly superior to the rams horn stock headers.
Race Director
Joined: Dec 2004
Posts: 10,332
Likes: 63
From: PARADISE
St. Jude Donor '09-'11-'12-'13-'14
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
No. That is BS. The exhaust is the same temperature with manifolds or headers and that is what determines the temperature of the pipe. Additional BS is the issue of LTH ground clearance. Mine are no lower than the stock pipes, and in any case, are not the lowest point under the front half of the car.
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Race Director
Joined: Feb 2006
Posts: 12,239
Likes: 19
From: Chino CA
No. That is BS. The exhaust is the same temperature with manifolds or headers and that is what determines the temperature of the pipe. Additional BS is the issue of LTH ground clearance. Mine are no lower than the stock pipes, and in any case, are not the lowest point under the front half of the car.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
The difference between quality, correctly-sized LTH and shorties in both HP and especially torque is quite significant in my experience. The shorties are essentially replacements for stock manifolds - they don't have any scavenging affect...and this is where much of the power gain with headers come from.