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Jun 3, 2013 · 3 posts · Joined 2010. #27 · Jun 3, 2013. Go to muscle motors website mike has the stroker kits listed, not much d ifference in price, and you can go up to a 540 with a factory block check em out, or give them a call you won't be sorry. Like. O.
May 18, 2015 · The 4340 forged 440Source crankshaft is internally balanced and uses a 3.750-inch stroke. Combined with 6.760-inch Eagle forged steel H-beam connecting rods and Wiseco pistons, the engine now displaces 446 cubic inches. Machine work was performed by Koffel’s Place in Huron, Ohio, and assembled by Clanton himself.
- The Numbers
- Adding EFI
- The Numbers: EFI
Scott Koffel made two dyno runs with his Holley carburetor to establish a baseline. The 900 cfm 4150 series carburetor has been massaged, tweaked, tuned, cuddled and kissed for years and is dead-nuts reliable. The first pull was made with 32 degrees total timing, and the engine made 638 horsepower at 5,500 rpm and 641 ft.-lbs. of torque at 4,800 rp...
While the dyno numbers put a smile on our faces, we wanted to see what Holley’s new Terminator EFI system would do. We discovered the Terminator during our planning period and obtained one to see if EFI could make more power than a well-sorted carburetor. The Terminator system includes a throttle body with four built-in injectors, a wiring harness,...
With the Terminator system in place, our 499 woke up and screamed. Keeping timing at 34 degrees, the engine made 657 horsepower at 5,800 rpm, and 642 ft.-lbs. of torque at 4,800 rpm. Getting an additional 13 horsepower is pretty darned impressive, considering that we invested a mere 20 minutes of dial-in/tuning time. It’s important to consider that...
Contact us for your specific application and pricing. The koffels Place original B1 head features raised ports that offer huge flow increases over cast iron head. The 2.300 inch intake valves and the 1.780 exhaust valves have been repositioned to the bore center-line for greater performance gain.
Feb 20, 2019 · 121 views. Drew Racing. ·. February 20, 2019 ·. Follow. Engine on its way to Koffel’s Place Engines in Huron, OH. Making horsepower for 2019!!
- 17 sec
- 125
- Drew Racing
Koffels were responsible for the original B1 heads that Wayne County used. They are still involved in development of race motors based on newer versions of the B1 heads in IHRA ranks. There have been several articles in the Mopar releated magazines over the last few years about Koffel's engines.
Feb 4, 2015 · The block and the pistons were then delivered to renowned Mopar engine specialist Koffel’s Place in Huron, OH for machining. Block Machining. The cylinder bores were machined to a finished diameter of 4.3755 inches with deck plates and pre-crushed head gaskets in place.
