6FIVE_STANG said:
Is a 351C the same as a 351W with diffrent heads?
Yes and no... Mainly no.
They share MANY of the same dimensions and basic specs, even have a fair amount of parts that swap.
The bore spacing, web spacing, head bolt pattern, balance, tranny mount, engine mounts, flywheel/flexplates, and more, are all based on the same accessories or dimensions. Therefore they have much in common, and with some thought, can be hybrid or swapped for the other into a car easily.
They both have pros and cons like anything else.
6FIVE_STANG said:
Can the C be just as fast as the W if i put equal amount of money on them?
Dollar for dollar, the W is the better bet.
Especially if you want to use light components to effectively gain more power from weight loss.
If money and time are easy, then the C can be turned into a monster.
The Engine Masters competition has had several winners/top contenders that were built as W/C hybrids.