Thinking about a 351w, few questions
11-05-2006, 01:25 PM
#1
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Thinking about a 351w, few questions
I was thinking of doing the 351w swap into my 89 hatch...I want to build up a 351 engine and I was wondering what block is best to use? I want to go with a roller block, is that a good choice and why? How can I determine the difference from a non-roller bare block and a Roller block other than just the engine code or whatever, like what other physical differences are there? I have read that the 92 blocks are capable of using roller cams is this true and if so what would have to be done to it to allow it to use the roller cam? Would that be wise to do? My last question is why cant I use a 351w computer with this swap?
11-05-2006, 01:41 PM
#2
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RE: Thinking about a 351w, few questions
roller cam blocks were made from 94-98
it will have a serial number that starts with F4 thru F8
if you look in the valley, a roller cam block will have the two thread
holes in the center to screw down the lifter hold down plate/spider.
you dont have to have a roller cam block, just have to use linked conversion lifters
and the right kind of non-roller cam.
www.camshaftinnovations.com can hook you up with right cam
no need to use 351W computer, your stock '89 computer will work just fine
it has same firing pattern and will run fine, and run great with a dyno tune.
personally i just spent the extra couple hundred bucks and time to find a roller cam block.
they're not as easy to find, but they are available if you look around.
it will have a serial number that starts with F4 thru F8
if you look in the valley, a roller cam block will have the two thread
holes in the center to screw down the lifter hold down plate/spider.
you dont have to have a roller cam block, just have to use linked conversion lifters
and the right kind of non-roller cam.
www.camshaftinnovations.com can hook you up with right cam
no need to use 351W computer, your stock '89 computer will work just fine
it has same firing pattern and will run fine, and run great with a dyno tune.
personally i just spent the extra couple hundred bucks and time to find a roller cam block.
they're not as easy to find, but they are available if you look around.
11-05-2006, 01:46 PM
#3
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RE: Thinking about a 351w, few questions
have you ever heard about the 92-93 blocks being roller cam capable? I want to know if thats true and would I still have to machine the block to except the rollers
11-05-2006, 01:48 PM
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RE: Thinking about a 351w, few questions
no, roller cam blocks did not come out till 1994.
just use the right non-roller cam with the crossed linked conversion lifters.
easy to do.
just use the right non-roller cam with the crossed linked conversion lifters.
easy to do.
ORIGINAL: 89Ford
have you ever heard about the 92-92 blocks being roller cam capable? I want to know if thats true and would I still have to machine the block to except the rollers
have you ever heard about the 92-92 blocks being roller cam capable? I want to know if thats true and would I still have to machine the block to except the rollers
11-06-2006, 04:58 PM
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RE: Thinking about a 351w, few questions
I too have heard that the 92 blocks were roller capable, but that most blocks were not roller equipped until 94.
The bad thing about the truck computers is that they batch fire the injectors.
This is not a big deal if you keep the rpms low, but can cause problems when the motor is reved higher.
The stock 5.0 computer will do pretty well with the 351w.
jason
The bad thing about the truck computers is that they batch fire the injectors.
This is not a big deal if you keep the rpms low, but can cause problems when the motor is reved higher.
The stock 5.0 computer will do pretty well with the 351w.
jason
11-06-2006, 05:05 PM
#6
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RE: Thinking about a 351w, few questions
ORIGINAL: vristang
I too have heard that the 92 blocks were roller capable, but that most blocks were not roller equipped until 94.
The bad thing about the truck computers is that they batch fire the injectors.
This is not a big deal if you keep the rpms low, but can cause problems when the motor is reved higher.
The stock 5.0 computer will do pretty well with the 351w.
jason
I too have heard that the 92 blocks were roller capable, but that most blocks were not roller equipped until 94.
The bad thing about the truck computers is that they batch fire the injectors.
This is not a big deal if you keep the rpms low, but can cause problems when the motor is reved higher.
The stock 5.0 computer will do pretty well with the 351w.
jason
11-07-2006, 04:32 PM
#7
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RE: Thinking about a 351w, few questions
ORIGINAL: 88BlueGT
Whats the problem with that?
ORIGINAL: vristang
I too have heard that the 92 blocks were roller capable, but that most blocks were not roller equipped until 94.
The bad thing about the truck computers is that they batch fire the injectors.
This is not a big deal if you keep the rpms low, but can cause problems when the motor is reved higher.
The stock 5.0 computer will do pretty well with the 351w.
jason
I too have heard that the 92 blocks were roller capable, but that most blocks were not roller equipped until 94.
The bad thing about the truck computers is that they batch fire the injectors.
This is not a big deal if you keep the rpms low, but can cause problems when the motor is reved higher.
The stock 5.0 computer will do pretty well with the 351w.
jason
Because all 4 cyl's on the right bank are fired at the same time, you end up with very poor fuel distributions.
The probelm gets worse as rpm increases, for the same reason 'ram tuning' of an intake maifold gets better at higher rpm.
The reversion of pressure waves causes the fuel to get tossed around in the lower intake manifold.
It seems to work well for the trucks, but a Mustang should use something better. Especially since there is the tune of a truck computer will be torque focused.
The truck computers just aren't that great of a choice for a car, considering how easy it is to get an A9L computer.
jason
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