New 347 Build... '75 Street Queen

[chuzie]

Update your price list when you have a chance please. I too am on a budget and waiting for you to burst my bubble so I can get this crazy idea of a 347 out of my head.

 

[73azbronco]

Mine was $7000 plus or minus a few hundred. They are not cheap, now I could have dropped that price in half but I let the machinist assemble and test.

 

[Mountain Ram]

Total so far
Used motor: $400
Block work $300
SCAT 347 Stroker kit: $1,100

Added to this so far...
ARP main stud kit: $60
Comp Cams kit: $680
XE266HR cam
Matched valve springs & hardware
Double roller Timing set
Roller lifters
Retainers and keeper
$2,540 so far...


Looking forward at bigger items:
Edelbrock heads: $1,300
Headers: $400
Valve covers: $200
New EFI harness: $600
MAF 65mm. Free with motor
Throttle body. Free with motor
19lb injectors. Free with motor
Gaskets. $200
Computer. $100
Rockers and rods. $300
$5600... ish...

A lot of people may start with the headers, harness, computer, block and could reuse valve covers and other items to save money.

I know the 19lb injectors are not ideal... I have a friend who will be building a new motor for his Mustang and I will get his 24lb injectors and 70mm MAF at that time- if he goes thru with it.
Todd

 

[rguest3]

I did this exact build about 8 years ago with a 74 Bronco.

SCAT 347 kit, AFR 185 Heads and the same XE266HR Cam. Motor really screamed, but also pulled pretty good down low as well. Not really a very big cam.

19lb injectors may not be big enough for the build you are doing (Good For Stock) - I went with FR #30
70mm Throttle Body
Matched Air Meter to Injectors - Go with Pro-M, will work great the first time.
9AL Computer

Just like a carb build, everything has to match and work together.

Got a great start. We'll be watchin.

 

[chuzie]

Guess you're gonna have to find someone to do some EEC tuning.

 

[Mountain Ram]

Guess you're gonna have to find someone to do some EEC tuning.

There is a guy locally Who I believe does them, but it can be run with up to 30# injectors without a tune... At least from what I have been able to research.

Rguest-
The cam was spec'd by Comp. I wasn't looking for a radical idle or tons of top end... More for a good solid curve in both HP and TQ with enough low end to turn 37s on 4.56 gears. I would love to hear about your build if you want to share any additional details on here!

Todd

 

[chuzie]

Are you running the crank from the explorer motor you pulled?

 

[Mountain Ram]

Are you running the crank from the explorer motor you pulled?

A 302 crankshaft can't be turned into a stroker crank. It could be re-used for a 306, but to get the stroker, you need a crank with higher offset rod journals which create the additional stroke...

 

[Mountain Ram]

After cleaning the intakes and TB... Both intakes were sandblasted, but in different media and cabinets. I believe the upper is powdercoated and that is a bear to get off, so I had to move to our bigger blast cabinet. The lower was done in a media cabinet with lower pressures. You really can't see it in this pic very well, but the sonic cleaner really cleaned the internals very well- removing all deposits!! Thinking about getting the old dremel out and cleaning out the intakes a little...

Anyone ever take freeze plugs out of the upper? I beat on one and couldn't get it to budge... I did the ones in the block and assume these come out the same way. They are stubborn, but with the earlier note about sand in the upper, I wanted to take them out and drop the whole upper back in the sonic cleaner one more time.

 

[chuzie]

Sounds about right. Asked because I didn't see any mention of details of it in the early part of your thread before you installed it.

 

[Mountain Ram]

I thought it was in my first post...

The Scat kit comes with the crank, rods, pistons, rings, bearings, harmonic balancer, flex plate and is balanced.

 

[chuzie]

Gotcha. I'm a little slow.

What piston head volume are you using? I assume they are forged.

Where did you pick up your kit? Seems like a good price.

 

[Mountain Ram]

I scoured the internet on pricing and ended up going thru Summit. I provided them a website with a low price and they matched it and gave me free shipping.

I did not get forged pistons, but I hope I don't regret it. I have the Hyper pistons and I believe the pistons are -12 or 14cc dish which is rated for a 9.6:1 CR with a 60cc head volume. Hyper pistons should be fine with sub 10:1 CR, no nitrous, no forced induction. To my knowledge, most production pistons are Hypereutectic.

Rods are 5.4" length, forged I-beam (like factory) and the crank is cast.

IMHO, you can go forged pistons, crank and conn rods, but with a naturally aspirated, pump gas engine that will unlikely ever see over 5500rpm... where is the value??

 

[chuzie]

I agree 100% Forged is a TON more money and meant for a completely different application IMHO.

If you have the info, please spread the love on the site you found the good price on so I (we) can duplicate your success.

Didn't see any SCAT sets on summit with 14cc dish. Wonder if they are out or discontinued or I am just a dummy.

 

[Mountain Ram]

I guess it is the 16cc dished. The kit is listed on Summit as 1-94175BE for $1,190 with $20 s/h right now. SCAT website shows 9.6:1 CR with a 58cc head.

Race-Mart.com lists it at $1,079.63 with $86.72 shipping
Behrents.com lists it as $1,065.15 with $12.95 shipping

I don't think either of these is where I got my number from, but neither price is bad. My kit all came from SCAT, packaged in one box.

 

[Thunder26]

Anyone ever take freeze plugs out of the upper? I beat on one and couldn't get it to budge... I did the ones in the block and assume these come out the same way. They are stubborn, but with the earlier note about sand in the upper, I wanted to take them out and drop the whole upper back in the sonic cleaner one more time.

I don't think those are freeze plugs, just the way it was cast. I've tried knocking them out before too but stopped when I thought about it possibly cracking the casting.

 

[Mountain Ram]

I don't think those are freeze plugs, just the way it was cast. I've tried knocking them out before too but stopped when I thought about it possibly cracking the casting.

They are definitely plugs of some sort. Before I blasted them, they appeared to be galvanized steel while the upper is cast aluminum. I whacked them several times with a hammer and chisel and they didn't crack, just kept denting...

 

[airbur]

Which windage tray are you going with?

 

[Mountain Ram]

Which windage tray are you going with?

Do I need a windage tray?? Isn't it really focused on high RPM motors and controlling the oil movement in the bottom end??

 

[airbur]

It isn't only for high rpms. It keeps the oil where it needs to be....on the crank and rods longer.

Viperwolf1 used one on his 5.0l build.