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#1 |
Registered Member
Join Date: Nov 2001
Location: Sunny, Hot, Sebring, Florida
Posts: 725
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![]() Ok, I understand the equal v.s. unequal length issue as far as scaveging (spelling?) goes, which is better, inch and a half, or inch and five eights? and most importantly WHY?
I'm talking on a heavily bolt-on 5.0, but still with stock heads,cam,intake. 3.73 gears.
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Remember...2nd place is 1st place for losers! |
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#2 |
Registered Member
Join Date: Jul 2001
Location: Seattle, WA
Posts: 381
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![]() I saw 1 and ½ if you are going to leave it as it is now. Otherwise I saw go 1 5/8.
Thanks, DoranW
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What I have: 1990 Red Mustang 5.0 LX: [BBK X-Pipe]-[MAC Cat-Back Exhaust] [MAC Cold Air Intake]-[BBK Equal Shorties] [3.55 Gears]-[Cobra Intake Manifold (Upper and Lower] [E-303 Cam]-[Granetelli Mass Air Flow Sensor] [Front and rear sway bars]-[New black carpet and seats.] [Adjustable Fuel Regulator]-[T5 Conversion w/ K. Cobra Clutch/Hurst STS] [Cobra Throttle Body]-[130A Alt. Conversion] Thinking about: Aftermarket Heads! Vortech A-Trim |
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#3 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
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![]() 1 1/2 headers would be better cause they match the ports on your stock heads and the smaller tubes will maintain your torque while increasing HP.
1 5/8 headers are larger than the ports on your heads wich reduces the velocity of the exhaust gases leaving out reducing your low end torque. Stock heads are not capable of making use of the extra air flow capacity that 1 5/8 headers provide and would probably lose HP over the stock headers. That being said my 1 5/8 equal length headers that I have on my car are overkill but I will be able to take advantage of there flowing capacity when I get my nitrous. Later,
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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#4 |
Registered Member
Join Date: Sep 2001
Location: zachary, la
Posts: 73
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![]() dark 5.0 if you are going to leave your car as is go with the 1.5" headers, if you plan on modifying it in the future with heads and intake,....... Then go with the 1 5/8" headers. But don't but 1.5" headers now and then go buy 1 5/8" headers later when you modify it. go ahead and get the 1 5/8 headers now and that way you will not have to worry about that extra cost when you eventually do the heads and intake.
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GT-40X(58cc)heads, cobra upper&lower, FMS 65mm TB, 75mm Bullet, 24# injectors, 190 lph fuel pump, moroso cold air intake, BBK 1 5/8 equal length headers, flowmaster cat back, 1.7 cobra rockers, crane 2031, T5Z gear box, centerforce dual friction, mcleod bullet proof bellhousing, 3.55 gears, hurst billet shifter with over 193,000 miles. thanks to all who contributed |
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#5 |
Moderator
Join Date: Dec 1999
Location: Livonia, MI, USA
Posts: 1,194
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![]() I used the 1-1/2" ones for a LOOOOONG time, before I outgrew them.
GO with smaller, you will gain more torque. I know I dynoed mine mostly stock, and people were impressed with 237rwhp on stock motor with a few bolt-ons.
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Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com |
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