6 pots are better than 8

W

wagon

Well-known member
Just some interesting info from XD / XE (factory) workshop manual...
Iron head 250 - 208kg - -(95kW)
Alloy head 250 - 185kg - 94 kW (carby)
302 V8 - 326kg - 140kW
351 V8 - 326kg - 149kW
As you can see, it doesn't take too much to warm up a 250 to waste a V8 (lighter, cheaper to run (maybe...), cheaper to register and insure, easier to work on (not as @#$% cramped)).....

Anymore reasons anyone?
 
easier to find manifold leaks, not as easy to get manifold leaks, easy to change plugs, easy to do a head on, easy to put in, easy to turbo, what else easier to build :>:>:>::>
 
The engine weights are not to the same standard. The 250 alloy head is actually 218 kg all up without power steering and a/c. The weights for the 302C and 351C include the a/c and power steering, mandatory with all non-police spec V8'S.

1971 Mustang Boss 3514V HO was the same weight as the XY 351 4V HO...264 kg. Power steering, a/c, and the thicker walls of the Aussie block used in the last engines was where the 326 kg figure comes from.

When the 5.0 reappered as an EFI EB, it was 235 kg.

A 1970 351 W is 17 kg's lighter than a 351C.

The 302 W is about 213 kg. The 255 V8 used in US Mustangs was 200 kg.

These are all ready to run.

The cast iron 250 is heavier than the 302W by 28 kg.

Unless engines are weighed to a standard, the wrong info comes out.

I love these engines. The fact is the block is darn heavy, lots heavier than the earlier 144/170/200/250 non-cross flow engines. There is over 35 mm of extra width in the block over the earlier engines for the cross-flow head to fit and get cooled properly.

A 302 W is lighter than even an alloy head 4.1. The 302C is over 51 kilos more than the 302w.

Hope that helps.
 
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