200 6 cyl want more horse power... - Vintage Mustang Forums
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post #1 of 7 (permalink) Old 07-25-2010, 01:24 AM Thread Starter
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Default 200 6 cyl want more horse power...

I want to keep the original 6 in my car and I know they are rated at about 120 hp. I was wondering if i could get it to hit 200 hp with modifications, nothing crazy maybe header, exhaust stuff like that....
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post #2 of 7 (permalink) Old 07-25-2010, 01:45 AM
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When I had my 6 I had headers and the dui dizzy and I felt like I was going to crap my pants. You should check out the ford6forum for more info.

1967 coupe I6,Dui dizzy,front disc,first car. 08/17/07-06/27/09 =(
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post #3 of 7 (permalink) Old 07-25-2010, 08:42 AM
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Originally Posted by klmustang67 View Post
nothing crazy maybe header, exhaust stuff like that....
You certainly can get them to move, but it cost more per hp for a six than it does for an eight.

The whole engine is a bottleneck, and improving just the exhaust won't fix the flow. You need to address the carb, intake, heads, and exhaust to get the air and fuel in , combusted, and out as efficiently as you can.

If it's not a money issue, a properly built six can be a lot of fun and a rare exhibit. I know the Aussies make wonderful stuff with which to build a proper six.

Ford Six Performance Home/Index


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post #4 of 7 (permalink) Old 07-25-2010, 08:48 AM
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Will cost a couple grand to get to 200 HP. (head, carb, headers, etc). I think if you go to 200 HP on a 6 you would have to change out the rear end to a V8 one, maybe someone else can chime in on that.

I love 6's, and I think the dual carb adapter, the headers, maybe a different rear end gear, and maybe some sort of four speed (or 5 speed) might be a way to wake it up for less.

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post #5 of 7 (permalink) Old 07-25-2010, 08:52 AM
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For 200hp you will have to get a "little" crazy. Classic Inlines Performance Parts - Home Here you will find engine builds in stages and parts needed. Check the Dyno results for actual gains when adding parts. Depending on condition of your engine, a 250ci swap will give you a 25% increase.

66 Coupe 200I6 (Back under restoration)
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post #6 of 7 (permalink) Old 07-25-2010, 09:58 AM
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Try also Ford Six Performance Home/Index for 6cyl performance parts.

Tony K.

Tony Kovar
Melbourne, FL (Formerly from Long Island, NY!)

1965 Mustang Convertible 200cid I6, 3spd Manual
1966 Mustang Sprint 200 Registry Owner/Moderator
1966 Mustang Sprint 200 Convertible 200cid I6, C4 Auto
2007 Mustang V6 Convertible w/ Pony Package
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post #7 of 7 (permalink) Old 07-25-2010, 12:31 PM
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My 200ci has a 2bbl carb, header with dual exhaust and electronic ignition. It has a stock C4 with a stock rear. I have been planning my restoration and it includes keeping the six but with a few more upgrades. I think 120hp was a generous rating from Ford many years ago. Realistically, I think they are much lower (not sure what the numbers are). I don't want to go crazy with the engine rebuild because if you are really looking for power, just do the V8 swap. You can easily drop thousands into the I6 engine just to get it up to stock V8 HP. I want something that will be fun to drive on the street. I have no desire to race with it.

Here's a link to some clips of my exhaust.
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