Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Keep I6 or swap to V8

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Old Sep 12, 2010 | 07:29 AM
  #1  
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wonso79
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Default Keep I6 or swap to V8

Looking for some suggestions on doing a swap but not sure if I want to spend the money. Can you beef up the I6 to make it a little quicker? Any ideas would help. I am looking at a dual outlet header for the I6 to put on dual exhaust and thinking of upgrading to a 2 barrel carb with the adaptor. Any other performance ideas? I am rebuilding the engine in spring so open for anything.
Old Sep 12, 2010 | 01:46 PM
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Originally Posted by wonso79
Looking for some suggestions on doing a swap but not sure if I want to spend the money. Can you beef up the I6 to make it a little quicker? Any ideas would help. I am looking at a dual outlet header for the I6 to put on dual exhaust and thinking of upgrading to a 2 barrel carb with the adaptor. Any other performance ideas? I am rebuilding the engine in spring so open for anything.
If you do the dual exhaust, 2V carb, and upgrade cam you'll be up to the power level of a 289 2V. The car will sound like a V8, have plenty of snap, and amaze people when you open the hood.

You can also get disc brakes that will go on the spindles you have and fit stock wheels, do the upper control arm "drop" for better handling, upgrade springs, export brace, and probably even install a T5 5-speed for improved acceleration and mileage.
Old Sep 12, 2010 | 03:23 PM
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Fordsix.com

They know all about these engines...

We swapped a 6 out of a rust free 66 coupe, easy enough, for those folks who end up with new suspension, brakes, rear axle, transmission and engine, it is no more expensive than starting with a V-8.....

Sounds almost like a factious statement, but truth is a lot of folks end up with all of this stuff new no matter if the car is a six or an 8 to start with.
Old Sep 12, 2010 | 07:10 PM
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Thanks, I'll have to start picking up these parts this winter.
Old Sep 12, 2010 | 07:41 PM
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I don't have the money or skill to do a swap. I added Clifford Headers and a dual exhaust. Looks and sounds good (for what it is). Call the boys at Clifford and get one of their catalogs. They do the dual carbs as well as cams and heads and ....

http://www.cliffordperformance.net
Old Sep 13, 2010 | 05:12 AM
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That's who I was thinking about getting the parts from, so the exhaust sounds good?
Old Sep 13, 2010 | 01:05 PM
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keep it a 6, i was in the same situation as you and its hard to say i regret it, but i almost do. it takes a lot of time and money. I'm at the point where i get frustrated really easily with the project.

looking back I probably would have just left it a 6 and beefed it up and saved around 4,000 bucks
Old Sep 13, 2010 | 05:22 PM
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Yep, I can't seem to make up my mind but really don't want to spend crazy money on swapping it out. The I6 is a good engine but just need a little more snap to it so I will try those improvements listed above.
Old Sep 13, 2010 | 07:07 PM
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Swap the six for a V-8. I did this in my parents car (now mine) last year, and the difference is night and day. It's not just about the power, but the beefier suspension components you also have to swap in give the car an altogether more tied down feel.

Regards,
/s/ Chris Kenendy
Old Sep 14, 2010 | 06:29 AM
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I would keep the 6 just to be different everyone has a v8 mustang anymore.Something about a inline 6 with 2 or 3 side draft carbs on it just makes you think how fast is it.If money isn't a problem i would swap it to a 5 lug so you can get better looking rims a lot easier.



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