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JimmyMac · 04-22-07, 06:17 AM

JacMac,
Many thanks for the clarification.
I agree that the XE prefix could have been used pretty freely, confirmed by my search for HiPo parts.
I know of HiPo engines with XE marked rods and even the main caps with FE as distinct from the original C3 Ford part numbers.
Could it be that the original GT40 two bolt mains block was in fact a HiPo casting with different markings ?
I know that the 289 XE and Boss block is dimensionally wider than the standard block however.
The FE external harmonic balancer also appears to be the same heavyweight HiPo design.

04-22-07, 06:17 AM	#5 (permalink)
JimmyMac JIMMYMAC Lifetime Premier Supporter Join Date: Jul 2003 Location: Scotland Posts: 881 Rep Power: 15	Re: 289 XE Rods JacMac, Many thanks for the clarification. I agree that the XE prefix could have been used pretty freely, confirmed by my search for HiPo parts. I know of HiPo engines with XE marked rods and even the main caps with FE as distinct from the original C3 Ford part numbers. Could it be that the original GT40 two bolt mains block was in fact a HiPo casting with different markings ? I know that the 289 XE and Boss block is dimensionally wider than the standard block however. The FE external harmonic balancer also appears to be the same heavyweight HiPo design. __________________ Cordially, James MKI monocoque. XE' 289 short blocks, C6FE heads, Webers, ZF Graviner Fire Suppression Last edited by JIMMYMAC; 04-22-07 at 06:22 AM.