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....
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.
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.
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 (Rolling Restoration)
66 Bronco Half cab, 203ci I6, CI aluminum head/intake, Isky cam, Keith Black pistons, Holley 390cfm 4V, Clifford header 9.7:1 compression, DSII ignition
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.
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