My first test drive with the new 347

[Tiko433]

So I have not posted much about my new motor. It’s Blue Print 347 , I’m using all my 97 Explorer EFI electronics. Some needed changes and upgrades: 47 lb injectors, 90 mm lightning MAF , CompCam Melonized gear, reverse rotation water pump/T chain cover, FlowKooler water pump, TrickFlow track heat EFI intake, TrickFlow 75mm T-body. I’m using a base tune from a local tuner, after clutch break in it goes to the tuner for dialing in. The high pitched noise is the IAC valve, it does it at idle and will get higher as it idles down I’m not sure why it does this I need to see what the tuner says.
With that said wow the power is crazy ... it has such a quick response and you can feel it pull harder and harder as the rpms climb.
https://photos.app.goo.gl/GyifpiHodfpT1xAw5

 

[ared77]

Nice! I've got a 347 sitting on an engine stand waiting on something to put it in.

 

[rexorcist]

Same bp 347 paired w fitech..love it..enjoy

 

[spap]

How’s the low end torque, great motors seems they are crammed pretty aggressive towards the top end.

 

[blubuckaroo]

I'm thinking of using a Blueprint 347 in my '62 Ranchero project.

I have a question...
Their full dressed motors come dyno tested. Do you receive the carb/FI and distributor it was tested with, or do they just send those in a box for the owner to set up? It usually takes a good deal of tuning to get an out-of-box carb and distributor to run right.

 

[Tiko433]

I bought it with out the carb or front dress , it was tested and had a Dyno sheet. I’m still having Idling issues, the final tune should take care of it.

 

[blubuckaroo]

My question is, will I still have to jet the carb and curve the distributor?
I feel like dressed should be just that.

I put the question to Summit. Here's the answer I got back...
Your Product Question:
Setting up distributors and carbs can take a good deal of tuning to get the engine to make the advertised dyno numbers. When I buy a "dressed" Blueprint motor, do I get the carb and distributor that it was dyno tested with, or do I just receive those components in their boxes?

Answer:
It comes with what it was dyno tested with assembled to the motor. No plug wires or plugs though.
MICHAEL - August 23, 2020

 

[36Fan]

The high pitched noise is the IAC valve, it does it at idle and will get higher as it idles down I’m not sure why it does this I need to see what the tuner says.

Im curious what you find out. Mine has the same thing, almost sounds like a vacuum leak. How did you find out it was the IAC?

 

[MaddMaxx]

Im also considering the blue print fuel injected 347. Any problems fitting it in? Body Lift? Header issues? Did you use the explorer serpentine system?

What transmission are you guys running? I have the NP435 and want to swap it with the 4r70w. Appreciate any input ..

 

[xltboy]

my carbureted 347 came ready to run minus the front dress. I did have to remove the distributor to put a fitting in the intake but other than that it was add gas and power to HEI and go. So far very satisfied with this engine.
Xltboy

 

[blubuckaroo]

There are many that don't understand the 347. They think the 351W was ford's 347.
Wrong!
One drive with both will tell you the difference.
A 351W has huge mains designed to soak up peppiness and provide torque instead. Much like the difference between a light and heavy flywheel.
This is exactly why it's a popular mod to use a lighter 351 Cleveland crank in a 351W. It improves the peppiness of the 351W.

 

[nvrstuk]

Popular mod??? "This is exactly why it's a popular mod to use a lighter 351 Cleveland crank in a 351W. It improves the peppiness of the 351W."

This is interesting... to do this wouldn't you need:

1- main brg spacers? Have to be crushed into place correct?

2- different timing chain set? Who makes one this size?

3- isn't the snout different and needs machining?

4- I tend to recall that the thrust brg width is different on them-have to look?? How do you remedy that- just wondering. Sounds interesting but not common at all.

Can't think of anything else off the top of my head...

 

[blubuckaroo]

Popular mod??? "This is exactly why it's a popular mod to use a lighter 351 Cleveland crank in a 351W. It improves the peppiness of the 351W."

This is interesting... to do this wouldn't you need:

1- main brg spacers? Have to be crushed into place correct?

2- different timing chain set? Who makes one this size?

3- isn't the snout different and needs machining?

4- I tend to recall that the thrust brg width is different on them-have to look?? How do you remedy that- just wondering. Sounds interesting but not common at all.

Can't think of anything else off the top of my head...

This conversion isn't talked about much in the Bronco circle. It's more of a Falcon/Mustang thing, used in track cars.
Here's one of the suppliers.
https://www.lunatipower.com/cranks/ford-351-windsor-small-block-with-351-cleveland-mains.html

All I'm saying is the lighter crank in the stroked 302 makes a fun ride.

 

[Tiko433]

Im curious what you find out. Mine has the same thing, almost sounds like a vacuum leak. How did you find out it was the IAC?

At first I did not know what the noise was. But I’m pretty sure it’s it. I’m running a BC Bronco EFI throttle cable. It returns the cable as it should but the pedal feels soft. I don’t like how light it feels. My last motor I used the exact same set up but I had a opposing spring, basically pulling on the throttle back as I pushed the pedal. I put the spring back on but I think I made it too tight which could pulling the throttle closed at idle when the ECU is trying to keep it open. I’m going to play with it today.

Peepines.... that a good description. Holy S compared to my old Motor this thing feels like I has a Big Rodeo Bull loaded in the shoot and when you open the gate you better be ready to hang on. I’m sure there are my out there that are thinking way in the hell does a 40+ year old truck need a motor like that. I’m answer is why not it’s a motor make it faster...

 

[LSharpNM]

47 Lb injectors Are you planning on forced induction in the future? Those injectors are capable of supporting ~650 HP.

 

[Tiko433]

47 Lb injectors Are you planning on forced induction in the future? Those injectors are capable of supporting ~650 HP.

No. It’s what the tuner recommend I have the regulator dialed in at 40

IAC whistle gone! So the gasket has 2 holes and matches the IAC. the intake has one matching hole and one really big opening. I cut the gasket to match and it completely eliminated the whistling. I made a shield for the filter, the tuner said a shield will protect the MAF for the fan wash.

 

[BanditBronco]

EEC-V tuners are hard to come by, who is tuning your rig?

 

[Tiko433]

Dyno Tune Performance . Va Bch, Va. they been tuning motors and dyno testing for as long as I can remember. I’m sure all I’m doing is stuff they where tuning years ago. I don’t know a tuner for EEC-V is hard to find ? The basic tune he wrote is running good however I can tell it’s on the rich side. After I put 500 miles on the clutch it goes back to him for final tune on the dyno . So far I’m running the ECU for the 97 Mountaineer I was using for my 5.0 swap a few years ago with his basic tune loaded. It was a funny day when I was planning this 347 and wanted to keep my Ford EFI if I could. I pulled it to there shop and said I have this Bronco I want you to tune it. He stated laughing and said “ We don’t do that “ I said hold on take a look at what have. He was pretty impressed I had the 5.0 in it with OBD 2 . I showed him the specs on the motor I ordered and he said sure. He recommended the MAF, injectors, throttle body and Fuel reg and a SCT tuner. So far it’s doing ok, no CHK Eng lights and all of my readings are where they need to be. I’m knocking those 500 miles to get it finalized