• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Burnt Valve :( But Maybe A Solution?

  • Thread starter Thread starter ThatBear
  • Start date Start date Aug 6, 2012

ThatBear

Active Member
Nov 29, 1999
143
30
38
Aug 6, 2012
#1
  • Aug 6, 2012
  • #1
Okay, so i picked up my 89 gt last week. Decided to take it by my mechanic because it felt sluggish and sounded like it was missing even after changing plugs and wires. He did a compression check and told me that i had a burnt valve and 3 others were "weak". He suggested that since he car has 206k miles on it that i dont just replace the heads. No sense replacing heads when he bottom end of the engine is really worn. My dilema is: i have a block from a 98 explorer with gt40p heads and intake. I will ofcourse get a valvejob on the heads and new springs. Im going to rebuild the motor and have the guy bore it to a 306. On hand i have a 70mm throttle body, 70mm MAF, 24# injectors, and trickflow stage 1 cam that will be added to my set up.
Now on the other hand: i have a 351w wrapped up in plastic sitting on my porch on a tire(cue banjo). It doesnt have heads but everything else is there. I would get it rebuilt.
What would your recommendations be? I dont want something thats going to tear my head off, just something.with some get up n go when i want, but also a nice easy driver. Thanks for bearing through my long post.
 

f8tlfiveo

My wife likes my spool and blow-off valve.
Aug 8, 2007
1,585
102
64
Lancaster, PA
Aug 7, 2012
#2
  • Aug 7, 2012
  • #2
Go with the explorer motor.. 351 will cost more to get installed. And you will need a decent set of heads to make the extra cubes worth while. Get a good set of valve springs for the motor, put the cam in and go.. How many miles are on the explorer motor? You will have around 260 275 hp at the wheels with the explorer motor.. I got 260 at the wheels with the stock cam..with crappy valvesprings.. I bought a set but never put them on.. Putting different heads on now though so I'm not gonna bother..
 

ThatBear

Active Member
Nov 29, 1999
143
30
38
Aug 7, 2012
#3
  • Aug 7, 2012
  • #3
The guy i bought it from said it had 65,000 miles. Would you by chance still have those springs? Id be willing to take them off your hands
 
You must log in or register to reply here.

Similar threads

K
Engine Gt40p vs 180 procomp
  • Kleinjj27
  • Oct 27, 2026
  • Fox 5.0 Mustang Tech
Replies
17
Views
416
Fox 5.0 Mustang Tech Nov 3, 2026
Kleinjj27
K
9
Engine Donor '00 Mountaineer meet '91 Fox
  • 91firecracker
  • May 11, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
41
Views
1K
Fox 5.0 Mustang Tech May 28, 2026
91firecracker
9
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
1K
Fox 5.0 Mustang Tech May 7, 2026
MadSquirrelTech
Electrical problem plug in the drivers kick panel
  • Mindseye007
  • Aug 16, 2026
  • Fox 5.0 Mustang Tech
Replies
3
Views
220
Fox 5.0 Mustang Tech Aug 16, 2026
Mindseye007
J
Engine 4.6 Running rough at half throttle
  • jake411
  • Aug 3, 2026
  • SN95 4.6L Mustang Tech
Replies
5
Views
283
SN95 4.6L Mustang Tech Oct 20, 2026
DangStitches
D
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
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?