New intake help
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
You will get the most bang for your buck with headers and exhaust. I see no realistic way to 70 HP with the intake you have plus any headers. More like 40 ish. Others may disagree. Do some research on headers, just a cat back won't help that much. I haven't put headers on my Vette so I'm Ducking that question.
Race Director
Joined: Jun 2004
Posts: 13,961
Likes: 707
From: WI
Porting and polishing the heads is good. Install larger valves and port match the intake to the head. Thinner head gaskets and full roller rockers. Hooker headers are less the TPIS, EM, etc. The CC dual exhaust is 2.25" and is not going to flow better then the stock system. You'd need to goto 2.75" and mandrel bent would help a lot also. Don't use the SLP runner unless your going to heavily port it. AS&M would be best.
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
Originally Posted by favrefan2k4
Im looking to spend about 700 to 1000 on things besides the cat and mufflers. What kind of headers do you recommend? They seem like a hard job if switching to long tube. So far I have heard underdrive pulleys and headers. What about a complete port and polish from pleanum to exhaust? Can that money and the exhaust get me 70 hp to get anywhere near 300 "flywheel" horsepower.
Thread Starter
Racer
Joined: Nov 2006
Posts: 270
Likes: 4
From: columbia mo
Alright so here's the plan. Right now I am going to do exhaust from headers back, but I havesome questions. First I found some long tube headers without the egr lines, what about the egr lines(if thats what they are?) on the old manifolds, do I block the egr all together. Also would 3" be too much for exhaust from the headers back? Then finally two flowmaster mufflers and a cat.....or no cat? (legality wise) Thank you so much for the input guys you have saved me some major money already.
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Go to Corvette Central online catalogue. They have the Hookers with EGR and O2 sensor setup and the Hooker Y pipe which eliminates front cats. You can use a hi-flow Magnaflow universal main cat and then what ever you want from there back. I am going with the Magnaflow cat back with cross over and aluminum mufflers for $299. They have dual working outlets and keep the factory appearence. Headers $690 pair, y-pipe $180, Universal Magnaflow main cat @ $65, cat back $299. That's the lowest cost full system I could find.
Thread Starter
Racer
Joined: Nov 2006
Posts: 270
Likes: 4
From: columbia mo
Originally Posted by favrefan2k4
would shorty headers be alright? If I wanted to, could I buy those headers I found without egr and be alright(they are only $200)?
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Originally Posted by favrefan2k4
would shorty headers be alright? If I wanted to, could I buy those headers I found without egr and be alright(they are only $200)?
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