351w vs 5.0 Explorer

SteveL · Nov 18, 2020

What are the better years of efi parts? 98-01?

BroncoChicken · Nov 18, 2020

The ‘96 throttle body sits slightly lower once you clock it 90*. The ‘98+ transmission is better, but the others can be upgraded with the mechanical diode if rebuilding. Some parts don’t matter that much.

kawonuelauwit · Nov 18, 2020

thanks a lot everybody. it seems like everyone likes the OEM as opposed to the "bolt on EFI" units. i tried to send EFI guy a message but it would not go through because his inbox is full. does anyone have an email address for him or know how to get in touch? i would like to pick his brain a little on the efi. thanks again

sanndmann3 · Nov 18, 2020

Its right in his avatar...

SteveL · Nov 18, 2020

Is it the 96 explorer heads that angle the spark plugs like stock so you can re-use the long tube headers? I know you need to add bungs for the o2 sensor if they dont have em yet. Otherwise you're buying $600 shorty headers from bc or bronco hut.

BroncoChicken · Nov 18, 2020

SteveL said:
Is it the 96 explorer heads that angle the spark plugs like stock so you can re-use the long tube headers? I know you need to add bungs for the o2 sensor if they dont have em yet. Otherwise you're buying $600 shorty headers from bc or bronco hut.

That’s true. I used the shorty headers so I forgot about the heads.

blubuckaroo · Nov 18, 2020

SavageBurro said:
I've had multiple 351w and 302/5.0 rigs. Very much liked how great the explorer 5.0 ran but definitely enjoyed the 351w way way more. Do you wanna get from A to B with a smile or a kick-ass grin?

Yes, the 5.0 can be built for power too but if you're doing that then might as well go w the 351w you already have.

You might see what the 351w block needs for rebuild before making the decision. There are others on here that know waaay more than I do about engines, but I have read and heard that some 351w blocks don't like a .040 overbore. That said, years ago I had a 351w bored .040 over that never had a problem.

btw...I went with Edelbrock pro flo 4 on my 351w and love it, but..... a main reason I did that was to save time and hassle. In hindsight, I think I would not have spent much more time swapping in lightning lower and using explorer upper w EFI guy pcm flash and harness. 12 years from now, will I be able to get a replacement injector for my pro flo? I guarantee you'll be able to get an explorer injector. I recommend you stay w 351w and install pro flo 4 thereby increasing the pool of customers and increasing my chance of getting parts in the future.
Good luck.

Does the 351W with Pro Flo 4 fit under your stock hood?
I was researching and the Pro Flo intake for a 302 is a Victor Jr. The 351W uses the taller Super Victor. And that's on an already taller 351W.

SavageBurro · Nov 18, 2020

blubuckaroo said:
Does the 351W with Pro Flo 4 fit under your stock hood?
I was researching and the Pro Flo intake for a 302 is a Victor Jr. The 351W uses the taller Super Victor. And that's on an already taller 351W.

Sort of. I have 1" body lift, drop air cleaner base, 2" thick filter, and I trimmed the throttle arm a tad.

kawonuelauwit · Nov 19, 2020

sanndmann3 said:
Its right in his avatar...

hahaha....can you tell I'm new to CB and still feeling my way around the site. thank you.

KyleQ · Nov 19, 2020

351W ALL day.

Fi-Tech

351W Lower/B.C. Adapter/Mustang Upper

I ran both a LOT with Explorer front dress with a Ranger radiator and the factory shroud and only had issues when I was using all the throttle for an extended period of time.

Only recently with my complete rebuilt with forged internals did I swap to a bigger aluminum radiator from Champion. I attached my stock shroud and then wrapped aluminum around it to grab more of the fan.

kawonuelauwit · Nov 19, 2020

KyleQ said:
351W ALL day.

Fi-Tech

351W Lower/B.C. Adapter/Mustang Upper

I ran both a LOT with Explorer front dress with a Ranger radiator and the factory shroud and only had issues when I was using all the throttle for an extended period of time.

Only recently with my complete rebuilt with forged internals did I swap to a bigger aluminum radiator from Champion. I attached my stock shroud and then wrapped aluminum around it to grab more of the fan.

Cool looking setup. Looks like she get used

KyleQ · Nov 20, 2020

kawonuelauwit said:
Cool looking setup. Looks like she get used

Yeah ;D

SteveL · Nov 20, 2020

KyleQ said:
Yeah ;D

Nice.. my kind of broncos

welndmn · Nov 24, 2020

Stock for stock the explorer motor is a better engine.
BUT, if you're rebuilding either, I'd assume you're putting heads / cam /pistons in them, so I'd go 351.

kawonuelauwit · Nov 26, 2020

welndmn said:
Stock for stock the explorer motor is a better engine.
BUT, if you're rebuilding either, I'd assume you're putting heads / cam /pistons in them, so I'd go 351.

thank you. starting taking the motor apart yday and will drain fluids this weekend. Hope to pull it next week and have a 98 explorer lined up to use the oem and serpentine system off of. Thanks everyone for the info and pictures. it is starting to come together.

351w vs 5.0 Explorer

SteveL

Huge chevy guy

BroncoChicken

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kawonuelauwit

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sanndmann3

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