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Discussion Starter · #1 ·
With the help of Duane Busch and a few others I have finally fired my 321" N/A SBF on a test stand before putting it in the car. Duane and I are pretty confident it will make 530 at the engine if not a little more. Here are the specs.

A4 Block 4.040
3.125 billet crank
5.500 billet rod
Probe 1.090 CH pistons 1.75cc dome
11.8 static CR
210-215 cranking cr
223cc Vic Jrs done by Duane Busch flow 320/238 @ .700
2.3 sq/in min cross section
Solid Roller Bullet lobes 247/252, 281/283, .427 lobe lift on both. 107 lobe sep. lobes are medium aggressive. 1.7 on intake 1.6 on exhaust .726/.683 lift
EFI tuned by an old Ford EPEC system
1 3/4-1 7/8 stepped headers
Ported Vic Jr by Duane as well converted to efi
90mm accufab
90mm mass air

I dont see to many engines being built with this size stroke. I am putting this in my 1993 cobra with a stick I have (3) tremecs at the moment 2 of which are face plated but I am looking for a face plated top loader or a Jerico. I want it to go 10 something at 3000#
 

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Discussion Starter · #2 ·
If anyone is wondering why I have a 3.125 stroke and a 5.500 rod with only a 1.090 piston... This block was decked a ton before i got it and is at 8.150 so the shelf stock 347 pistons work really well. .0025 out of the hole.
 

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Discussion Starter · #4 ·
It's all good. There are a ton of combos and the proof will be in the pudding. When do you put it in the car and start tuning on it?
within the next two weeks. I am getting married on saturday and I loaned my garage ut to my brother to get his car done and we just finished it up this week so hopefully next week sometime i will get the engine in the car.
 

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Discussion Starter · #6 ·
Yep saturday! With all the time and effort i put into this engine ( I did everything myself including the machine work under a very watchful eyes and helping hands) it should run well. Duane Busch really knows his stuff and has helped me tremendously in this deal. I cannot thank him enough. Thanks for the congrats
 
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