MichaelThompson wrote: ↑
Sat Oct 06, 2018 11:38 pm
pamotorman wrote: ↑
Sat Oct 06, 2018 2:43 pm
Economy of scale is what's happening there.
If I can buy a block, heads, etc. for 2/3 the price to make the same power, and nothing to do with the architecture, why wouldn't I? Everybody and their brother is making Chevy parts...
that is because chevy only had 2 different architecture for 50+ years the SBC and the BBC and ford even changed the bell housing bolt pattern on different engines.
I’ve heard this argument for most of my adult life and I must respectfully disagree with you on this.
General Motors categorized their huge variety of engines under the division they were intended for. So a Pontiac 350 shares no commonality with a 350 from any other division.
The 396 rat has nothing in common with a 389 Poncho or a 400” Olds. I could list comparisons like this all night.
FoMoCo on the other hand calls ALL engines in their arsenal “Ford” engines.
So now you have a 351W intended for bread and butter car and truck business while at the same time you have a 351C intended for the performance cars. Remember that’s Ford’s AND Mercury’s. (BTW same bell housing flange)
Furthermore Ford always took an engineered approach to expanding a engine line. For example with the 2.87” stroke 221, 260, 289 and 302 engines the 8.2” deck the rod length and the crankshaft journal sizes all match the architecture and intended purpose of these small lightweight V8’s.
Now moving up to the 351W and it’s intended purpose of lugging bigger cars, trucks and vans you have a taller deck with a longer and beefier connecting rod that is the correct length to maintain what Ford felt was the ideal L/R ratio.
The crankshaft journals with their greater overlap for toughness and little things like bigger main bolts and head bolts and oil pump drive shaft. At the same time many parts will interchange.
It’s all in how you look at it I guess. I think Fords are simple compared to Gm’s Smorgasbord.
my post referred to chevy not all GM. GM figured it out many years ago it was not a good idea to have so many different engines. remember the stink when GM put chevy engines in pontiac and olds. caddy still puts chevy engines in some of their models