• Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-

4.6L rods and piston into a 5.4L

  • Thread starter Thread starter Green mustang
  • Start date Start date Jun 11, 2025
G

Green mustang

New Member
Jun 10, 2025
3
0
1
Ganado
Jun 11, 2025
#1
  • Jun 11, 2025
  • #1
4.6L rods and piston into a 5.4L

I got a question? Can a 4.6L rods and pistons be used in a 5.4L truck engine. Why change engine? Just keep your 4.6L and rebuild? Yes I do love the 4.6L engines but my 4.6L aluminum block cylinder wall has two cracks and cracked by the crankshaft area two. Also damaged heads on the passenger side head. I got a used head from a savage yard which was $79 also cylinder 3 has a cracked. All my mustang parts from the 4.6L I tooked them off to reused like , crankshaft, Timing cover , etc. Nothing damaged expect cylinder 3, piston head and cylinder head valves on position 3 (2 intake valve, 1 exhaust valve and 3 rocker arms and 3 lash adjusters 1 valve spring popped out too. The used head I got had everything that still looks good but just gonna change the valve stem seals and lash adjusters for both heads. Found a 5.4L 3v for 100$ just the block with nothing in it, got the crankshaft from a part out facebook post and engine had no rods and piston also, but it came with the main bearing at the crankshaft area ,was a bit dirty and rusty but a good old deep clean outside and inside taking my time to make it clean also honed the cylinder walls , would it be possible if I could use the 4.6L piston and rods onto a 5.4L crankshaft and engine?
 
You must log in or register to reply here.

Similar threads

G
Turning a 4.6 into a 5.4
  • Green mustang
  • Jun 10, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
165
1996 - 2004 SN95 Mustang -General/Talk- Jun 12, 2025
Noobz347
E
4.6l auto to 5.4l 6 speed
  • EastanF5
  • Jan 22, 2026
  • SN95 4.6L Mustang Tech
Replies
0
Views
185
SN95 4.6L Mustang Tech Jan 22, 2026
EastanF5
E
J
'04 3.8L V6 mineral deposits and oil on #3 cylinder. Does it need a rebuild or something simpler?
  • joeybuddy96
  • Mar 18, 2026
  • SN95 V6 Mustang Tech
Replies
7
Views
272
SN95 V6 Mustang Tech Yesterday at 3:06 PM
gkomo
H
Ongoing Battle With Hydraulic Lifters
  • hailer06
  • Jun 8, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
283
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 9, 2026
Noobz347
Engine Suggestions on an engine rebuild. Stock cam/GT40Ps or aftermarket on both for a fun weekend driver?
  • MadSquirrelTech
  • Apr 28, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
23
Views
807
Fox 5.0 Mustang Tech May 7, 2026
MadSquirrelTech
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?