351w EFI performance upgrades?
Cargo Master
Joined: Mar 2010
Posts: 3,342
Likes: 294
From: Laramie, WY
Ford 289 302 351W 408 427 5 0 Mustang Aluminum Heads GT40 EFI Carburetor | eBay
$650 shipped with valves, springs, retainers, valve seals.
$650 shipped with valves, springs, retainers, valve seals.
Post Fiend
Joined: Mar 2011
Posts: 10,080
Likes: 5
From: Backwoods of Snowflake AZ
Does any body know if there is any possibility I could use an exploder Gt40 intake on the stock 351W bottom with porting like the above did?
I am building a 351W stang that we are trying to not spend to much money on and the current issue is the clearance of the hood with the truck intake and don't want to cut the hood if possible. I have an entire 302 from an exploder that I am using the GT40P heads and a guy sold me custom shorty headers that clear the plugs really cheap.
Trav
I am building a 351W stang that we are trying to not spend to much money on and the current issue is the clearance of the hood with the truck intake and don't want to cut the hood if possible. I have an entire 302 from an exploder that I am using the GT40P heads and a guy sold me custom shorty headers that clear the plugs really cheap.
Trav
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
The explorer intake will not fit on any truck lower. If you google explorer intake vs truck I take, you'll see a lot of comparison pics.
Explorer and gt40 have staggered ports. Truck 5liter, truck 351, and mustang 5liter, have inline ports.
Scroll up, look at my porting pics, get a 351 truck lower, and a Holley systemax upper, and you'll be fine. Might need a spacer but the systemax intake is pretty tall, I think it has plenty of clearance.
Or get a 302 truck upper, cut the plenum off, and fab up a box upper. I've done that a bunch of times.
Or buy the edelbrock knockoff intake on eBay. They are like 350-400 bucks.
You'll still need hood clearance. The 351 is taller by a bit. They fit in foxbodys better than the sn95. But you can get lowering engine mounts, and then I dropped my k-member, and used lowering springs (to get ride height back) and that dropped the engine into the car nicely, but still had to cut the stock hood on my 94gt.
Explorer and gt40 have staggered ports. Truck 5liter, truck 351, and mustang 5liter, have inline ports.
Scroll up, look at my porting pics, get a 351 truck lower, and a Holley systemax upper, and you'll be fine. Might need a spacer but the systemax intake is pretty tall, I think it has plenty of clearance.
Or get a 302 truck upper, cut the plenum off, and fab up a box upper. I've done that a bunch of times.
Or buy the edelbrock knockoff intake on eBay. They are like 350-400 bucks.
You'll still need hood clearance. The 351 is taller by a bit. They fit in foxbodys better than the sn95. But you can get lowering engine mounts, and then I dropped my k-member, and used lowering springs (to get ride height back) and that dropped the engine into the car nicely, but still had to cut the stock hood on my 94gt.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Post Fiend
Joined: Mar 2011
Posts: 10,080
Likes: 5
From: Backwoods of Snowflake AZ
the k member has been modified to sit lower then an aftermarket Kmember I just need like 3-6" of clearance then the hood will shut. Maybe I don't have a stock hood on it currently no idea. I don't usually work on cars but it is a project for my sister that we got for free.
Maybe I will revert back to the 302 from the explorer and use the 351 in one of the other trucks. Thanks guys.
Trav
Maybe I will revert back to the 302 from the explorer and use the 351 in one of the other trucks. Thanks guys.
Trav
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
I was thinking he meant putting the upper explorer intake on the 351 lower because he said "put explorer intake on like above)...
But the adaptor plates to put the 302 intake on a 351 will cost almost the amount of buying a whole new intake.
And the gt40 and explorer intake flows less than the 302 truck intake...
But the adaptor plates to put the 302 intake on a 351 will cost almost the amount of buying a whole new intake.
And the gt40 and explorer intake flows less than the 302 truck intake...
Post Fiend
Joined: Mar 2011
Posts: 10,080
Likes: 5
From: Backwoods of Snowflake AZ
I did mean explorer upper on 351 lower.
I don't care about the flow the car is just going to be a DD in the summer and frankly a V8 stang is going to be plenty to not get my sister in trouble with the police. exhaust will be upgraded only cause it will be custom since the car was originally a I6.
Trav
I don't care about the flow the car is just going to be a DD in the summer and frankly a V8 stang is going to be plenty to not get my sister in trouble with the police. exhaust will be upgraded only cause it will be custom since the car was originally a I6.
Trav
More Turbo
Joined: Jun 1999
Posts: 532
Likes: 1
From: Las Vegas
Not questioning you're statement, but are there any flow tests, or seat-of-the pants comparison that can prove this claim? I've heard that Mustang guys sometimes prefer the truck set up over the Mustang one. Just wondering where you got the info. Thanks
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
Info come from a guy on this forum, who actually flow tested these intakes...
I take it you haven't actually seen each of these intakes beside each other?
When the 302 truck rectangular intake runner, is as wide as the gt40/explorer is in diameter, you can visualize which one has more potential.
I take it you haven't actually seen each of these intakes beside each other?
When the 302 truck rectangular intake runner, is as wide as the gt40/explorer is in diameter, you can visualize which one has more potential.
FTE Chapter Leader
Joined: May 2006
Posts: 12,345
Likes: 1,319
From: Central Mississippi
Oh I was referring to a 5.0 GT40 upper & lower on a 5.8. As you put it above, the diagonal pattern is not going to with inline lower of the 5.8
No matter how you hog out the ports.
In other news... I still have unmolested parts of truck 5.0 intake lower, GT40 upper & lower so one day, I'd like to measure the volumes of all 3, just to see what they are.
No matter how you hog out the ports.
In other news... I still have unmolested parts of truck 5.0 intake lower, GT40 upper & lower so one day, I'd like to measure the volumes of all 3, just to see what they are.