8.2" 363 Street/Strip (Bracket)

[Guest]

[ShieldsMustang]

Here is my combo:

1980 Mustang HB, full interior, 2850# race weight.

A4 Block - 4.125" bore
Scat 4340 Crank - 3.4" stroke
Scat H-beam rods - 5.4" length - re-sized to 2.100", 0.927" pin
JE Pistons - Flattop, 6cc valve reliefs
JE Pro Seal Rings
Main, Rod, and Cam bearings are coated Clevite
RHS 215s, cleaned up to 222cc int./79cc exh. - 2.08"/1.60" - 987 Comp Springs, steel locks,retainers
Trick Flow push rods
Comp XE294H camshaft, Pro-Mag lifters
Trick Flow rocker arms - 1.72 ratio
Cloyes true double roller timing chain
Victor Jr. Int. - matched to heads - lots of blending work
650 Holley DP
MSD Ignition

C4 Auto - full roller - custom 10" conv.(4500 mtr - 5500 N20)
8.8", spool, 4.56 gears
28x10.5s M/T ET Drag, on 15x10 rim


Took it to the track, developed a miss after burnout, ran it anyway, went 7.26 @ 95.85, 1.70 60', launching @ 2200 rpm on the footbrake.

[woody]

Did yu sonic check that A4 after you went to 4.125, its got to be dangerously thin.

[ShieldsMustang]

Yes! I had to have it checked after initial bore & hone, it was OK, so I half-filled it with Hard-Blok anyway, since this would help strengthen the weakest section of the bores. Then had re-hone. It was 0.090" over when I bought it from a reputable m/c shop owner. It was in their shop car. He informed me 4.125" was OK, but to be safe, it is best to Hard-Blok it. So I did. No problems yet.

[Sponge]

I always read that you have to fill the block with hard block before boring it. You did it after?

[woody]

Yes! I had to have it checked after initial bore & hone, it was OK, so I half-filled it with Hard-Blok anyway, since this would help strengthen the weakest section of the bores. Then had re-hone. It was 0.090" over when I bought it from a reputable m/c shop owner. It was in their shop car. He informed me 4.125" was OK, but to be safe, it is best to Hard-Blok it. So I did. No problems yet.

Wow you got a rare bird there.

[ShieldsMustang]

According to the m/c shop owner, it was a "hand picked" block, so i'm sure it was the one with the most advantageous core shift.

Any educated guesses, ideas, or thoughts about power production?

[jtmustang]

650 carb....

[ShieldsMustang]

Its what I had on my 308. Not ready to buy one just yet. And it is very easy to tune  (especially with a FAST O2 system).

My 308 went 6.40s @ 104 - 1.371  60' (on 200 shot).

I expect this combo to go 6.60s on motor in the same car.

I honestly think the intake, cam, and carb are my bottlenecks on this engine.

But will it run the numbers?

[ShieldsMustang]

BTW, the headers are Hooker Super Comp 1 3/4" X 3".