New heads or T5 swap?

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nickm347

Member

Jul 13, 2003

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Apr 9, 2005

#1

• Apr 9, 2005

• #1

im in the process of building my 347 (still...not time because of school). i planned on using my money for some AFR 185's, but decided at the last second not to order them. i have gt40P heads from an explorer that i can put on, which i know is not the best head out there for a 347. My question is should i spend my money on a new set of heads with my AODE, or should i use the gt40p heads on the 347 and swap out the tranny for a T5, which will roughly be in the same price range.
im not sure, so can anyone help me out?

 

KingDiamond

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Mar 9, 2003

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Chicago, IL

Apr 9, 2005

#2

• Apr 9, 2005

• #2

Do you have anything done to the AOD-E to beef it up? The AOD-E and T5 aren't that great with a modded motor like that. I would recommend swapping to a Tremec and just using the GT40 heads. The power you lose with the older heads is going to be made up by the substantially less drivetrain loss from the 5 speed. I just went from an AOD-E to 5 speed and the car feels so quick now, I can't imagine how it would be with a 347.

 

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nickm347

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Jul 13, 2003

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Apr 9, 2005

#3

• Apr 9, 2005

• #3

thanks for the advice
thtas what i was thinking....i wsant sure how the aod could hold up to the new motor when it goes in, so i guess i will just buy a tremec.....do you know how much they cost?

 

KingDiamond

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Mar 9, 2003

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Chicago, IL

Apr 9, 2005

#4

• Apr 9, 2005

• #4

It depends, I got a T5 for $400 used with 40,000 miles

Most used tremecs go for $800 to $1000, and I think they're $1300 new. I spent about $1400 for the entire conversion.

 

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nickm347

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Jul 13, 2003

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Apr 10, 2005

#5

• Apr 10, 2005

• #5

what all do you need for a conversion?
i have an idea, but i might be missing something

 

KingDiamond

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Mar 9, 2003

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Chicago, IL

Apr 10, 2005

#6

• Apr 10, 2005

• #6

AOD-E to T5
http://www.allfordmustangs.com/Detailed/25.shtml

AOD-E to Tremec
http://www.allfordmustangs.com/Detailed/43.shtml

Taking out the 200 lb chunk of crap was the hardest part. That AOD-E is a heavy turd.

 

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nickm347

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Jul 13, 2003

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Apr 10, 2005

#7

• Apr 10, 2005

• #7

haha i bet it was
thanks for the links