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Author
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Topic: Need Help
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deerslayer154
Journeyman Posts: 2
From: clinton ar usa
Registered: Jan 2001
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posted 02-08-2002 11:33 PM
   
Hi. I'm new to the forum and i need some assitance. I'm building a 76 mustang II cobra 289 with an old 4 speed top loader. I've been told the bell housing is considerably wider than the original bell housing. The problem is I'm going to be turning high rpm's and need all the flow I can get from my exhaust but I can't seem to find headers that will fit with the older bell housing and don't know if inch and five eights tube shorties with two and a half inch pipe straight off the headers will give me enough flow. Second problem is trying to decide what gear ratio for the rear end. I'm running tunnel ram and cam set up with power range between 2500 and 6500 rpms. I need a low enough gear to come out of the hole hard but to drive on the street occasionally. I'm running a 9 inch rear end with 14 inch tires. I don't know the exact size yet. Any input would be appreciated. 
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Percy Hazel
Journeyman Posts: 58
From: Bellingham, WA, USA
Registered: Jul 2000
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posted 02-09-2002 01:59 AM
There were are are headers made that will fit with the small bellhousing.Hooker makes a set #6120 and I understand they are available thru Parts America for about $300.
The shorties, Iam told, are the wrong angle and will not work.
The flywheel that you run with the big bellhousing has approximately 10 more teeth.
As for gears if you really want to run it on the street don't go over 4.10:1 and you will also probably limit your highway travel.
Have fun
Later
Percy------------------
perce111
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R Rainwater
Gearhead Posts: 521
From: Puxico,MO. USA
Registered: Jul 99
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posted 02-09-2002 07:44 PM
Not exactly on subject, but I may be needing a Mustang II bell housing to fit a C-4 trans. My 86 Bronco II just died and I may stick a 302 in it. I have a C-4 with an adapter and transfer case for this swap.
Bob R.
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Moneymaker
Administrator Posts: 26813
From: Lyons, IL, USA
Registered: May 99
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posted 02-11-2002 09:37 PM
Welcome to M&M Deerslayer  Unless you plan on twisting that 289 over 7000 RPM a bunch, generate over 400 horsepower, and use slicks a lot, I would not be too concerned about having a blow proof bell housing. 289 HIPO's came with aluminum ones and were factory rated at 6000 RPM. The FoMoCo bells are pretty stout.  ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
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MooseII78
Journeyman Posts: 47
From: LA
Registered: Nov 2001
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posted 02-13-2002 05:27 PM
Header options are quite limited even with the factory bells in the II. Your better option might be to go with a T5.As for gears i am reving my 302 to 6500rpm. In 1/8th mile i needed a 4.56 ratio to maximize my times and in 1/4 4.11s work well. I have found my best combination for the street in around 3.70. If you go with a T5 though the overdrive will allow you a bit more gear and comfortable street use.
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