Visa fullständig version : 351

2002-01-27, 15:12
Måste höra med er V8 gurus här på forumet. Vad exakt skiljer en "Windsor" motor ifrån en "Cleveland" dito? Har en kompis som är på gång att byta ut sin 351:a till båten mot en Cleveland (som ska kunna ge mer effekt).


2002-01-27, 18:52

289/302/351W engines is a front cover and water exits the intake manifold face of the cylinder head through the intake manifold to the radiator. 351C/351M/400 engines do not use a front cover. The block is extended and covered with a flat stamping. Water exits the combustion face of the head and into the block, and then to the radiator. Windsor and Cleveland head physically interchange, but some modification is required to accommodate the differences in water passages.


The Windsor engine plant builds this engine; hence the name. Normally, this isn’t important. But another engine, the 351C (for Cleveland engine plant), has the same displacement. That’s about all they have in common. So, it’s always important to differentiate between the two. The 351W is a beefier block than the 289/302, but has the same bore spacing (4.38") and bore diameter (4.00"), so heads retrofit. A higher deck height requires a unique intake manifold. Main journals (3.00"0 are larger than the 289/302 (2.25"). Camshafts interchange, but the 351W has a different firing order: (1-3-7-2-6-5-4-8) vs. (1-5-4-2-6-3-7-8) for the 289/302, except the 1982 and later 302 HO which use the 351W firing order. The 351W has been used from 1969 to the current year.


The 351C entered the scene in 1970 and was produced until 1974. It has canted valves with multi-groove keepers, hydraulic cam and pedestal-mounted rocker arms with "sled" fulcrum seats that are retained with cap bolts. Heads for 2V induction have "open" chambers with rounded ports, while 4V heads have "quench" combustion chambers with larger rounded intake and exhaust ports. A 351C Cobra Jet appeared in 1971 with 4-bolt main caps, which was carried over in 1972 was the 351C-4V with open chamber heads.

Vet inte om det hjälper så mycket, men det var vad jag hittade...

2002-01-28, 00:08
Det blev åtminstone litet klarare vad skillnaderna var. Tack :-)

M v h