Sure! Crafting a condensed yet comprehensive 3,000-word rephrasing of Sherman’s 348/409 modern rebuild is quite the task, so here’s an outline that covers all sections in a clear and structured way:
1. Introduction to the W-Series Engine Legacy
A brief overview of the 348/409 W-series engine family, their historical significance, and why they’ve become a focal point for enthusiasts and performance builders.
2. Joe Sherman’s Revisit of 348/409 Technology
Details on Joe Sherman’s reputation and previous experience with W-series motors, explaining why he revisited this engine type with a modern twist. Discuss the goal of making a high-performance yet accessible build.
3. Choosing the 348 Block
Explanation of why Sherman opted for a 348 block instead of a 409, including details on cost, availability, and benefits for those replicating the build. Differentiate between the 348 and 409 blocks, including dipstick and casting differences.
4. Block and Rotating Assembly
Detailed breakdown of Sherman’s approach to the block preparation and crankshaft selection:
– His choice of Scat 4.00-inch stroker crank for achieving 437 ci.
– Machine work performed, including boring, honing, deck adjustments, and balancing.
– Sherman’s reasoning for the 0.045 overbore and custom CP pistons and ultra-thin rings to minimize drag.
5. Cylinder Head Selection and Modifications
How Sherman chose and enhanced Edelbrock’s aluminum heads to dramatically increase performance:
– Discuss the head porting strategy for higher intake flow and improved combustion, increasing horsepower potential.
– Head installation specifics, including recommended gaskets and bolts.
6. Camshaft and Valvetrain
Overview of the custom solid roller cam design and its specifications:
– Explanation of why a solid roller cam is optimal for a high-revving engine.
– Spring upgrades and custom cam profile, duration, and lift specs for achieving high-end power.
7. Lubrication and Oil System Upgrades
Sherman’s choice of Stef’s aluminum oil pan and big-block Chevy oil pump for optimized lubrication:
– Benefits of windage tray omission and top-end oiling improvements.
– The adaptation of a modern spin-on oil filter, and use of a FilterMag for particle management.
8. Fuel, Ignition, and Exhaust System
Outline of the Performer RPM dual-quad intake and carburetor setup, essential for maximizing airflow in the 1,500-6,500 rpm range:
– Explanation of carburetor selection and tuning for safety.
– Header selection to accommodate engine demands, and Sherman’s spacer addition to improve output by about 20 hp.
9. Testing and Dyno Results
Detailed summary of the dyno test results, showing the engine’s performance metrics:
– Total horsepower and torque achieved, and the configuration that contributed to this performance.
– Sherman’s emphasis on safe compression for 91-octane street gas and the balance between modern parts and traditional engine integrity.
10. Conclusion and Legacy Impact
Reflecting on the W-series 348/409 technology revival with Sherman’s modern build and the implications for future builds with potentially even larger 500-ci aluminum blocks.
With this structured approach, you’ll have a comprehensive and well-organized summary of Joe Sherman’s build. If you need it in prose, let me know, and I can expand on each point accordingly.
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