1969 Ford Cleveland heads

John Major · 09-15-2008, 05:08 PM

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 · 09-15-2008, 06:13 PM

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 · 09-15-2008, 09:13 PM

Quote:

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 · 09-16-2008, 01:21 AM

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 · 09-18-2008, 12:08 PM

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 · 09-18-2008, 12:11 PM

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 · 09-18-2008, 01:16 PM

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!!!!!!!!!!

Chris Hill · 09-18-2008, 02:02 PM

Quote:

Originally Posted by 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!!!!!!!!!!

Just have uncle Carol or uncle Bill write a letter. You of all people should know that...

JRyan · 09-18-2008, 04:25 PM

Actually Duane, it's 2.05/1.66.

Jerry

goinbroke2 · 09-18-2008, 05:53 PM

I just looked up the guide to see how close I was. (blueprint guide won't open at work)
ALL 4BBL HEADS ARE 2.19!! I don't care what the guide says as obviously it's wrong. I used to run 454 chev valves in my heads because in the early eighties the chev's were like $4.00 a piece and the fords were $12.00 or something like that. I had D1/D2/D3 heads, if they were 4 bbl, they had 2.19's.

Has nobody run a 73 cleveland? How come this has never been protested or the issue been raised?

Yes the 2bbl's were all 2.05's x 1.65 (guide shows 1.66) The 2.09's have longer stems heehee same diameter stem though.

09-15-2008, 05:08 PM	#1
John Major Junior Member Join Date: Jun 2002 Posts: 26 Likes: 0 Liked 0 Times in 0 Posts	1969 Ford Cleveland heads 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

09-15-2008, 06:13 PM	#2
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,257 Likes: 245 Liked 939 Times in 259 Posts	Re: 1969 Ford Cleveland heads 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. __________________ NHRA 6390 STK M/S 85 Mustang

09-16-2008, 01:21 AM	#4
JRyan Senior Member Join Date: Apr 2003 Location: Aberdeen SD Posts: 642 Likes: 28 Liked 104 Times in 28 Posts	Re: 1969 Ford Cleveland heads 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

09-18-2008, 12:08 PM	#5
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 706 Likes: 589 Liked 174 Times in 60 Posts	Re: 1969 Ford Cleveland heads 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!

09-18-2008, 12:11 PM	#6
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 706 Likes: 589 Liked 174 Times in 60 Posts	Re: 1969 Ford Cleveland heads 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.....

09-18-2008, 01:16 PM	#7
Duane Eiskant II Member Join Date: Dec 2001 Location: Alexandria, Va Posts: 496 Likes: 256 Liked 53 Times in 31 Posts	Re: 1969 Ford Cleveland heads 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!!!!!!!!!! __________________ Duane Eiskant 1354 Stock/Super Stock

09-18-2008, 04:25 PM	#9
JRyan Senior Member Join Date: Apr 2003 Location: Aberdeen SD Posts: 642 Likes: 28 Liked 104 Times in 28 Posts	Re: 1969 Ford Cleveland heads Actually Duane, it's 2.05/1.66. Jerry

09-18-2008, 05:53 PM	#10
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 706 Likes: 589 Liked 174 Times in 60 Posts	Re: 1969 Ford Cleveland heads I just looked up the guide to see how close I was. (blueprint guide won't open at work) ALL 4BBL HEADS ARE 2.19!! I don't care what the guide says as obviously it's wrong. I used to run 454 chev valves in my heads because in the early eighties the chev's were like $4.00 a piece and the fords were $12.00 or something like that. I had D1/D2/D3 heads, if they were 4 bbl, they had 2.19's. Has nobody run a 73 cleveland? How come this has never been protested or the issue been raised? Yes the 2bbl's were all 2.05's x 1.65 (guide shows 1.66) The 2.09's have longer stems heehee same diameter stem though.