1969 Ford Cleveland heads

[John Major]

Aren't the 2 bbl & 4 bbl heads the same? The difference in compression is from the dished verses flat top pistons.

thanks in advance,
John

[Rory McNeil]

The 351 Cleveland didn`t come out until 1970. The 351W debuted in 69. As for the Cleveland heads, the 70-73 4 barrels had larger valves and ports than a 2 barrel version. The 70-early71 4v heads also had smaller combustion chambers than the 2 v or late 71-73 4 barrel castings.I heard that there was an oddball "smaller" 4 barrel head towards the end of the 351C`s production run, but I`ve never seen them myself.
As for the 351W heads, I believe the heads are the same for 2 or 4 barrel applications.

[SSDiv6]

Originally Posted by John Major

Aren't the 2 bbl & 4 bbl heads the same? The difference in compression is from the dished verses flat top pistons.

thanks in advance,
John

The only Cleveland style cylinder head in 1969 was the 302 Boss head.

[JRyan]

The '73 Cleveland 4-bbl heads had the large ports, but the same valve sizes (2.09/1.66) as the 2-bbl heads. All had the large combustion chamber.

Jerry

[goinbroke2]

HHmmm, lot of years since I even touched one, but;
2bbl 2.05 int 1.65 exh open chamber ALL (70 some cc I think)
4bbl 2.19 int 1.72 exh open chamber police int head 71-74
4bbl 2.19 int 1.72 exh close chamber adj valve train boss 351 1971 only
4bbl 2.19 int 1.72 exh close chamber hyd valvetrain 351 CJ 1971-74

Memory being what it is, I'm thinking the hyd 4bbl CJ head and PI head might be reversed.

And yes when your running a stockcar and they have a cyl pressure rule, one open chamber and one closed chamber head will give 155psi(165limit) and the open will give 120....until your caught 5 races later...don't ask LOL!

[goinbroke2]

Oh yeah, something else, the 2bbl intake can fit a 17 year olds 3 fingers and the 4bbl will fit 4 fingers to the knuckle! (like sewer pipes) LOL!



good times.....

[Duane Eiskant II]

ACTUALLY the 73 and 74 heads had the 2.05 intake valve and 1.65 exhaust valve. but if you could talk NHRA into letting us run the 2.09 intake valve pleaese let me know!!!!!!!!!!