LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Edelbrock Headers on a 1997

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Old 02-16-2004, 03:55 PM
  #16  
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Originally posted by LT4Firehawk
Another possibility is just keep the stock manifolds and spend the money elsewhere. Check this post out:
http://www.ws6zxr.com/showthread.php?s=&threadid=28865
He made 363RWHP with stock exhaust manifolds with a mild cam (218/224), ported LT4 heads and other bolt ons.
If it were me, I'd never do a cam before a full exhaust, much less heads. Your just begging for your motor to be totally choked off. Just imagine how much power he'd be making if he'd had a set of full length headers, as well.
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Old 02-16-2004, 04:05 PM
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Originally posted by enisguy
If it were me, I'd never do a cam before a full exhaust, much less heads. Your just begging for your motor to be totally choked off. Just imagine how much power he'd be making if he'd had a set of full length headers, as well.
While I do agree that you can make more power with headers, I don't think it is really as big a limit as most people think. My car makes 302RWHP with stock everything except for the LT4 motor, ram air intake, and SLP catback. Considering that the LT4 Corvettes make the same power and have basically shorty headers from the factory and true dual exhasut, I don't know that it's really worth going to shorties over the stock manifolds. And while I'm sure you can pick up some more power with long tubes, I personally don't want to loose any ground clearance or have the hassle of leaks, retorqing bolts, etc that come with headers.
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Old 02-16-2004, 07:36 PM
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I have read on the mac web site that some of their headers are not smog legal. make sure they come a carb. #. Personally, I'm going to buy SLPs from new era perf. Here is the link.... http://www.neweraperformanceparts.co...&A=E&PKV=30017|0

The SLP's come coated but I haven't emailed n.e.p. to ask them how much the coated ones cost.
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Old 02-17-2004, 10:10 AM
  #19  
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Well thanks again for all the replies. I was looking around and the only MAC's I found for $560 were the ones without the dual cats, does anybody know if you need to modify the O2 sensors with this set up. I might go this route and put a high flow cat inline later. We have emissions here every two years so I have some time before I will get inspected again. Also will this system without cats generate any codes in the computer, I am OBDII so they do a visual check and then check the computer for codes, and if there are no codes it passes that simple.
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Old 02-17-2004, 02:45 PM
  #20  
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Have you ever thought about the edelbrock tubular exhaust system, thats what i have. Not really sure about how they perform because i have never had anything else.

http://store.summitracing.com/partde...art=EDL%2D6602
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Old 02-17-2004, 03:16 PM
  #21  
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My Edelbrocks went on just fine. Much easier than my friends SLP install. I also run pretty good with them too.
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Old 02-17-2004, 03:24 PM
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How is changing your plugs and wires with the eddies? Also did they come with the y-pipe?
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Old 02-17-2004, 03:32 PM
  #23  
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It is OK changing the plugs, easier than the mainfolds. Aslo the pic on the link that i posted i dont know what the hell that is, i have a 1997 and mine looks like this,Y-Pipe is included.

http://store.summitracing.com/partde...57#largerimage
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Old 02-17-2004, 03:56 PM
  #24  
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Does the y-pipe have the cats in them or does it emilate the cats? Also did you get them coated or is the painted stainless holding up okay? Any problems with routing the plug wires? Sorry for all the questions but I like to find out as much as i can before I invest in something that way I only have to invest once.
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Old 02-17-2004, 04:32 PM
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i have mine painted and they are holding up fine, plug wires are fairly easy, i only have 1 dyno max cat now, but they have the holes for the o2's and all so they are legal.good system for me
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Old 02-17-2004, 06:18 PM
  #26  
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i ran extremely well with edelbrock shorties and their y pipe, went from 8.67 at 81.16 to 8.46 at 82.65, take it for what u will thats over 2 tenths drop and a 1.5 mph gain in the 1/8 alone
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Old 02-17-2004, 06:51 PM
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DOnt get edelbrocks, it did nothing for my car! Not worth it at all!!! You can get long tubes w/ a y-pipe and cats. People sell new or alomost new Long tubes on here everyday get them if you dont wanna spend the money, but for god sakes dont get these headers. They did nothing at all.

If you want shorties try another company like mac w/ some high flow cats.

Long tubes are the way to go if you want some power. You wont get $hit w/ edelbrocks.

Waste of cash.

As for plug access I still cant see my plugs LOL. My friend has mac I could see his. My other friend has long tubes and You can definately get to his plugs
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