victor jr heads

[95mustang_gt]

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]

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]

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

 

[Black95GTS]

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]

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]

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