351 question.
Thread Starter
|
Senior User
Joined: Jul 2006
Posts: 138
Likes: 0
351 question.
Ok is the ford 351 windsor all around the same block no matter what? I mean if it was pulled from a car truck van is it all the same block???
And If I use Speed density over mass air and tune with a tweecer will that work? cause honestly the mass air looks like a PITA to do with a E4OD, and expensive.
And If I use Speed density over mass air and tune with a tweecer will that work? cause honestly the mass air looks like a PITA to do with a E4OD, and expensive.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
There is only one 351W. It got updated over the years, you'll find different heads, induction systems and cams depending upon the vehicle it's found in. From 1974-1993 the block was essentially unchanged, though better seals(like 1pc rear main) are used on the more modern copies. In '94 the block was updated to accept the factory roller cam assembly. This last and most desirable version was found in all truck series from then until the mod motors were introduced, but were most common in the fullsize vans and HD trucks.
With the right selection of parts you don't need MAF, the SD system will function fine and provide performance well above stock, up to a point. If you are planning performance levels beyond what the 19lb injectors can supply(approx. 275-300hp) then you will need a recalibration tool like a Tweecer for best performance, regardless what type EFI system is used.
With the right selection of parts you don't need MAF, the SD system will function fine and provide performance well above stock, up to a point. If you are planning performance levels beyond what the 19lb injectors can supply(approx. 275-300hp) then you will need a recalibration tool like a Tweecer for best performance, regardless what type EFI system is used.
Last edited by Conanski; Jun 17, 2007 at 11:02 AM.
Cargo Master
Joined: May 2007
Posts: 2,071
Likes: 36
From: British Columbia
Another block change occurred in the late 70s. The early blocks had a projection on the lower rear left side of block which was spotfaced and drilled and tapped 1/2" NC. Into this was screwed a fitting which supported the inboard end of the mechanical clutch equalizer bar. Since the clutch linkage was changed to a cable type in the late 70s this tapped hole was deleted.
From casual inspection it appears that some of the later blocks did have the projection, but it was left unmachined.
From casual inspection it appears that some of the later blocks did have the projection, but it was left unmachined.
