DSS Competition Engines 306 C.I. Longblock w/GT40-X Heads

Our seventh modification is a complete longblock. Built by DSS, inc. out of Lombard (Chicago) Illinois. It is equipped with Ford Motorsport GT40 "X-tra performance" aluminum "Turbo-Swirl" heads and Comp cams 35-000-8 cam with 1.7 Crane roller rockers.
The Cam specs are as follows:
Lift with 1.7 cobra rockers: .544 /.544 (512/512@1.6)
Duration @.050 220/230
Lobe separation angle: 112 degrees

Ok, You're asking "why remove a perfectly good, strong running Cobra engine??"
The answers are simple. I want to go fast. The stock engine is safe and sound and can be re-installed in a weekend. I now have a stronger bottom end with forged pistons, studded mains, better oil control and crank/connecting rods. I have lost 50 lbs. off the front of the car with the aluminum heads, and they also have larger valves.
Total cost for entire engine: $3800.00
The engine is shipped as a complete longblock assembly. You will have to transfer the flywheel and balancer, timing cover, upper and lower intakes, valve covers, fuel injection, water pump, oil pump (new one is required) oil pan and headers from your stock motor.
All listed components (heads/intakes) are UNPORTED.
Performance:
Since I have added a few other new modifications along with the engine, it will be difficult to establish a baseline here. I have added, along with the motor, a C/L 73 MM mass air sensor, a March Ram-Air system. (which requires use of stock airbox)
And, to harness the extra power, an Auburn Pro series posi unit, along with modifications to the chassis have been performed. Steeda welded-in tube type subframe connectors and aluminum upper (fixed type) and lower control arms help the car turn 1.71 (1.68 best ever) 60 foot times on DOT tires. I also have changed to 4.10 gears. (more on that in minute)
Before the stock engine was removed, I had installed the C/L and the ram air. I took the car to the strip and the last runs I made before the motor swap:
13.24@102.78 on Nitto drag radials, 13.55@102.44 on Eagle GSC's (stock tires)

After the motor swap, I ran it with 3.73 gears.
The car was not broken in yet, and with only 1000 miles on the engine, my very first 1/4 mile pass with the new engine was 12.90@106.79
On Mickey Thompson ET streets. I was able to turn a best of 12.88@107 mph with 3.73 gears. I found I was shifting into fourth too far down the strip, so I decided to switch to 4.10s. result: Best ET naturally asperated:
12.72@106.91

I also tried the GSC's and MPH was 109.97! While I just missed running 12's on radials (by .001 second!!) the MPH was higher due to change in tire diameter.

I have since installed the nitrous oxide system that was previously on the car with stock motor. Best ET on 150 horse shot with stock engine was 12.47@111 mph.
I have been running 100 horse jets with the new engine and it has responded by running in the 11's. 11.969@115.39 is my quickest ever. I also ran 117 mph twice while spinning to a 12.003 and 12.038. I still need practice with the nitrous, as I have never had a full-on nitrous launch where I can hook and launch. The car can pull the front wheels in 1st with no juice and in 2nd on a nitrous powershift.
I plan to go to 28" slicks next season.
Scroll down the page to see a spec sheet on the GT40 X heads.