• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

piston / valve clearance ?

  • Thread starter Thread starter black_demon
  • Start date Start date Mar 3, 2010
B

black_demon

Founding Member
Jan 27, 2001
474
0
16
Daly City
Mar 3, 2010
#1
  • Mar 3, 2010
  • #1
I've got a 289 block bored .060 over and Edelbrock Performer Heads #6025. The only pistons i've found with a high enough static compression ratio are KB P/N#736.

This block will keep the 5.155 rod length and 2.870 stroke. Does anyone know if there will be any clearance issues between the two? I've called KB and they didnt have a clue as to what i was talking about. Thanks!
 

woodsnake

15 Year Member
Jan 16, 2007
1,352
15
69
Hicksville, NY
Mar 3, 2010
#2
  • Mar 3, 2010
  • #2
"high enough static compression ratio"

For what? Every engine build is unique. You will have to measure P2V clearance regardless. As well as push rod length, installed spring height, etc....

If you are trying to verify before you purchase, can you get just one piston?
 

blown65

Founding Member
Jul 7, 1999
1,938
4
39
Queen Creek Arizona
Mar 3, 2010
#3
  • Mar 3, 2010
  • #3
You can speak with KB and see what they say. You will need your cam info and valve sizes/head type though. Can't really be exact but they should get you fairly close.
 
You must log in or register to reply here.

Similar threads

6
Hey all,I’m putting together a 302 for my 1968 Mustang and wanted to post the combo + some questions to make sure I’m not missing crucial
  • 68_Disgustang
  • Feb 22, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
3
Views
684
1965 - 1973 Classic Mustangs -General/Talk- Feb 28, 2026
Noobz347
Progress Thread 351w Build, 67 Coupe
  • redstang67
  • Oct 4, 2024
  • Classic Mustang Specific Tech
Replies
3
Views
326
Classic Mustang Specific Tech Oct 5, 2024
89ripper
S
Requesting Guidance for 306 motor swap - Fuel? - SD? MAF?
  • So_Flo
  • Jul 26, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
32
Views
2K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 4, 2026
Mcmahst
SOLD For Sale '92 LX Street/Drag car - WV
  • MikeyMustang
  • Apr 12, 2025
  • Fox Body Mustangs For Sale (1979-93)
Replies
4
Views
2K
Fox Body Mustangs For Sale (1979-93) Dec 31, 2025
MikeyMustang
Engine Raising compression on a relatively stock 302
  • keel
  • Jul 9, 2023
  • Fox 5.0 Mustang Tech
Replies
16
Views
8K
Fox 5.0 Mustang Tech Jul 20, 2023
keel
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?