347 vs 408 vs 427 EFI strokers - Ford Truck Enthusiasts Forums



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347 vs 408 vs 427 EFI strokers

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Old 10-21-2012, 01:18 AM
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347 vs 408 vs 427 EFI strokers

What is the best efi stroker.
Have heard the 408 is very reliable and parts are readily asseable.
heard 427 is hard to the find parts
going into a 92 f150 that had a 5.0l
Who has done a EFI stroker please cut in
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Old 10-21-2012, 01:55 AM
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you should be able to find everything you need from summit racing. im sure there are plenty of parts for the 427 out there. you might actually find the parts to build the bigger engines will cost about the same as the smaller ones. i vote 427 because i had a cool idea once for a "cobra" f150 that i thought would be really cool.
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Old 10-21-2012, 02:07 AM
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Originally Posted by craveman85 View Post
you should be able to find everything you need from summit racing. im sure there are plenty of parts for the 427 out there. you might actually find the parts to build the bigger engines will cost about the same as the smaller ones. i vote 427 because i had a cool idea once for a "cobra" f150 that i thought would be really cool.
I kinda already have a cobra f150.
My 77 f150 4x4 has a 500 hp 390 fe.
Did a quarter mile in 14.6 sec. And that was with a messed distributor we had to advance Big time to run. Mashed a few 5.0l mustangs.
Will have better times next time we race at the air port.
And will have a stroker NITE edition 92.
Haven't decided between a factory EFI, aftermarket EFI, or carb.
Now a 427sohc would be irate in a 9th gen f150.
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Old 10-21-2012, 02:08 AM
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The 347 is a stroker of the 302W. The 393 and 408 are strokers of the 351W. The 427 is a Ford Racing crate engine that uses a 351 Boss block. If you want real power, get a used 351 with as little miles and issues as you can, tear it down, have it machined and then make it a 393 or a 408.
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Old 10-21-2012, 02:28 AM
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The 347 is a stroker of the 302W. The 393 and 408 are strokers of the 351W. The 427 is a Ford Racing crate engine that uses a 351 Boss block. If you want real power, get a used 351 with as little miles and issues as you can, tear it down, have it machined and then make it a 393 or a 408.
Want to do the 408 and finding a 351w roller block is fairly simple. I have a great machine shop that gives me a discount.
The EFI is the grey area. I know the basics but not sure what all needs to be done in the electrical department.
I know MAF is the way to go. I know the ecu needs to be programmed to the parameters of the crank cam and whatever else.
Probably going for aluminum heads, hi flow intake, aggressive cam, big MAF , msd ign. Headers.
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Old 10-21-2012, 10:21 AM
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I'd have to vote 408 here too considering this is going in a heavy truck, the only way a 347 would be comparable is if it gets a blower. If you want to keep EFI you'll be replacing or upgrading everything EFI and fuel system related from the fuel pumps to the injectors and fuel rails the intake manifold and the computer and portions of the wiring harness. But with that done and a tuner module attached to the computer you can dial it in from the drivers seat on a laptop.
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Old 10-21-2012, 03:52 PM
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just buy a mid 90's 351 powered truck. you should be able to get one fairly cheap and have all the electronics including maf. then just part out/junk the rest. ive seen a few 351 f150's in my area for 5-800 bucks that had good motors and trannies in them.
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Old 10-21-2012, 04:27 PM
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FordStrokers.com 331-347-408-418-427 Custom Built Small Block Ford Engines



Oh yeah my 5.0 mustang, stock motor except for cam and other bolt ons run's low 12's.





.
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Old 10-21-2012, 09:09 PM
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Are you going to run overdrive or not.
Your best bet is to upgrade to mustang maf setup and ecu for the tuning support if you're going to use a c6 and not going to use an e40d.
If you want overdrive I'd use an explorer efi setup and get a built 4r70.

90mm maf
60lb injectors
Trickflow intake or edelbrock victor intake
1/2" fuel rails and aeromotive regulator
255hp pumps minimum or the Bosch 044 pumps at 310 (or new walbro 400 pump)

Build it with under 9.5 compression so you can boost it later.
That's a great start, but you'll need a lot more.
Make sure you find a good tuner, and ask which ecu they can and have experiance with tuning and get back to us with what they say. That will be a big consideration as well.
You can use tweecer or megasquirt or quarterhorse but usually you're on your own with the learning curve and tuning. We can help with that also.
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Old 10-22-2012, 02:35 PM
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Originally Posted by Boss08v10 View Post
FordStrokers.com 331-347-408-418-427 Custom Built Small Block Ford Engines



Oh yeah my 5.0 mustang, stock motor except for cam and other bolt ons run's low 12's.

.
I was talking bone stock mustangs. One was my brothers 95 5.0l No bolt ons.
I only had a cam intake headers and carb.
Every thing else was stock.
Pretty impressive for a 4x4 that's twice the weight.
This truck will go through a 200 foot long mud pit that's 2.5 feet deep in 4.4 to 7.6 seconds. Love to see that stang try that.
Lol. I'm just playin. Your stang sounds baddass.
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Old 10-22-2012, 03:53 PM
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If you plan on building it and running it hard, then don't try using a stock 302 block. You'll split it open like a pineapple(seen in first hand).

If you have to buy an aftermarket block, you might as well go BIG. They make 427ci Windsors(351). Friend has one, very mild, pump gas, roller cam and makes 500+hp. Runs it in a shortbed dent side that goes 12.5's at the track on street tires and AOD.

As for EFI? What makes the difference which stroker? Friend runs 360ci (302 Dart block) with '89 Mustang computer and Motorsport extender. Goes 10.6's.
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