victor jr heads

9

95mustang_gt

New Member

Mar 30, 2005

364

1

0

Wisconsin

Feb 4, 2008

#1

• Feb 4, 2008

• #1

buddy of mine is selling his victor jr heads.Will these heads be to big for a 306?I will be going with a custom cam, and will get the pistons notch for ptv clearance.The part number for the heads is #77189.let me know


BTW- next year, i will be going to a 331.

thanks
jesse

 

earleys94gt

Active Member

Aug 31, 2003

1,223

16

49

Ashley, Ohio

Feb 4, 2008

#2

• Feb 4, 2008

• #2

They will work better on the 331, but might be alright on the 306.

I think the biggest issue is going to be finding/running an intake manifold that will flow enough air to feed those heads.

Remember, an engine is nothing more than an air pump.

 

PUNISHER RACING

Active Member

Aug 27, 2007

1,124

0

36

FORD CITY, PA.

Feb 5, 2008

#3

• Feb 5, 2008

• #3

skip em they have a 210 runner even on a built 331 they would live life above 7,000 to fully benefit

 

Black95GTS

Active Member

Jan 8, 2004

1,644

3

38

Marlborough, MA

Feb 5, 2008

#4

• Feb 5, 2008

• #4

You'd have to spin a 306 to 7500K to get benefit from Vic Jrs... its a good head, but better suited to something like a 347 or a 364.

Adam

 

5spd GT

"the 5.0 owns all"

Founding Member

Aug 7, 2002

9,516

6

99

Arkansas

Feb 5, 2008

#5

• Feb 5, 2008

• #5

To match the piston speed of a 6,000 RPM 347, you will need to rev the 302 to 6,800 RPM.

6,000 RPM x 3.4 / 6 = 3,400 FPS (average piston speed)

3,400 FPS x 6 / 3.0" = 6,800 RPM

If you increase the desired RPM, you will increase the RPM that the 302 will need to match it

 

SQUEEZE&STROKE

New Member

Jun 24, 2005

0

0

0

SOUTHERN CA

Feb 5, 2008

#6

• Feb 5, 2008

• #6

I ran them on my 302 and they worked decent...when I went to a 331, they picked up ALOT...I also ran it carb'd and reved it to around 6800. Made 407 with shorty headers, 2.5" h pipe, victor jr intake and heads (unported), 750hp carb