360 rebuild

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Sep 17, 2024 | 05:03 PM

Thewon2141

Thread Starter

4th Gear

Joined: Sep 2024

Posts: 4

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360 rebuild

I’m looking for a good parts list for when I rebuild my FE 360 5.9

Sep 17, 2024 | 05:23 PM

85e150

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Welcome to FTE.

What kind of rebuild?

Stock?

Upgraded performance?

Have you ever rebuilt an engine before?

Sep 17, 2024 | 08:45 PM

Thewon2141

Thread Starter

4th Gear

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360

I used to rebuild Cummins 525’s in the corps so I am capable (I think).

Im looking to beef it up a bit new heads, cam, manifold, etc. just not sure what I can and can’t do if that makes sense… I know summit has kits but mostly for 390’s.. Am I correct in assuming that I can use that to do a build?

Sep 17, 2024 | 09:36 PM

440 sixpack

Lead Driver

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If you're looking for a performance upgrade the place to start is with a 390-rotating assembly. then decide what you want and how much you want to spend rebuilding your 390.

Sep 17, 2024 | 10:05 PM

Thewon2141

Thread Starter

4th Gear

Joined: Sep 2024

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390

So basically turn it into a 390 and build it up from there? Will I need to hone out the block to accommodate the pistons?

Last edited by Thewon2141; Sep 17, 2024 at 10:08 PM. Reason: Need to add information

Sep 17, 2024 | 11:23 PM

440 sixpack

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Your block is the same and so is the bore. same heads. you're going to need new pistons anyway, so a crank and rods are all you need extra.

Sep 18, 2024 | 01:00 AM

Thewon2141

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4th Gear

Joined: Sep 2024

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360

Thank you for that it made me do research and I learned about the size of the bore and stroke and how like you said the bore is the same but the stroke is longer. Makes so much more now!! I also learned that I can get it bored out to .030 over to get a bit extra hp but have to bigger pistons.. Any suggestions on crankshafts and rods?

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Sep 18, 2024 | 10:01 AM

Olblack

Mountain Pass

Joined: May 2018

Posts: 133

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I had my 390 bored .30 over and used 10.5 to 1 compression pistons for a little extra oomph. You may also consider headers

Sep 18, 2024 | 10:30 AM

#10

flowney

Cargo Master

Joined: Jun 2014

Posts: 2,212

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From: Central Florida

Quote:

Originally Posted by 440 sixpack

If you're looking for a performance upgrade the place to start is with a 390-rotating assembly. then decide what you want and how much you want to spend rebuilding your 390.

2X on that. Scat, Eagle et.al sell new reciprocating assemblies for the FE. This is a smart move in that the kit you get includes everything you'll need for a short block (rings, bearings, seals, crank and rods) as a balanced set. For a few extra bucks you can up the stroke even further (445 CID) w/o having to modify the block. First get the block clean and up to specs. That could include decking, line boring the mains and cylinder boring (no greater than 0.060"). Check the lifter bores too. Like a house, your engine can only reliably deliver what the foundation will support.
There are also top end kits as well from Edelbrock, Trick Flow et. al. Those will get you to long block status. Using kits with parts that are known/proven to work well together is almost always better than random selections.