351w swap 94 gt

[98blackstallion]

It's actually easier to tell what WON'T swap between 5.0 and 5.8.

Intake lower
Fuel rails need longer crossover hoses
Distributor
Oil pan
Just about everything inside the block
Pushrods
Head bolts
Heads if they were originally from a 5.0 unless you enlarge the head bolt holes.
Balancer from a post 82 5.0 HO is 50 oz vs 28 oz (Same with flywheel/flexplate)
The balancer/flywheel/flexplates will all interchange fine, but balance weight must be matched to engine...

Headers will bolt up fine, but may not fit chassis.

Edit
Speaking of chassis...
The 5.8 is 1" taller than the 5.0, so hood clearance is of concern.
The 5.8 is about 2" wider if memory serves...

Intake lower- check new intake
Fuel rails need longer crossover hoses- check new rails
Distributor- check 95 bronco
Oil pan- check ford swap pan
Just about everything inside the block---done
Pushrods---gotta wait to measure for these.
Head bolts----got these...
Heads if they were originally from a 5.0 unless you enlarge the head bolt holes.....gotta do this yet..
Balancer from a post 82 5.0 HO is 50 oz vs 28 oz (Same with flywheel/flexplate)
The balancer/flywheel/flexplates will all interchange fine, but balance weight must be matched to engine......Check new balancer and flywheel.

Headers will bolt up fine, but may not fit chassis...check hooker super comps


car has a 2.5" svo cobra hood on it so hood clearance is good!

 

[98blackstallion]

i got a set of 351w fuel rails but the feed and returns are on opposite side I need them to be on. What do I have to use to extend the stock 5.0 rails to fit?

 

[Venom351R]

Just use the same type of hose that it has on, you just need a longer one that's all. My fuel rail hose had to be extended when I swapped over to a Trick Flow R intake b/c of the width of the lower.

 

[revhead347]

351W uses a different distributer. It's slightly shorter. The 5.0 distributer will actually fit, but it puts too much pressure on the shaft, and it busts the oil pump.

Kurt

 

[revhead347]

A 351 will produce more power than a 302, but it's almost negligible. The difference is that it will produce the same power at a lower rpm, making it more usable.

Kurt

 

[Pokageek]

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[99FiveOh]

The biggest advantage to a 351 IMHO is strength. It is a much stronger block than a stock block 302 so it will handle a lot more power. 302's are said to be in the "splitting zone" when they reach around 500 rwhp. A 351w can handle much more than that.

Even if someone were to build a 351 and use all of their 302 parts on it, if you're going forced induction you can't really go wrong. A guy on the "other" thread put together a very mild 408 and topped it off with a SQ trim and it's a beast!