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What size valves?
#1
I want to order a new set of stainless valves, one piece, single notch. Anybody know what length they need to be? They are 2.19, 1.70's. Any recommendations?
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#2
I went with Ferrea valves in mine. Good top of the line valves. Don't skimp on any of the valve train. Can be disastrous.... ask me how I know!!!

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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#3
Ferrea, Manley, or Rev. All are good valves. Whatever you buy, the installed spring height will need to be checked and an appropriate springs, keepers, and retainers selected. Use a competent racing machine shop. Chuck

EDIT: Many of the after market valve are non-stock length as they are made from BBC blanks.
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#4
Yes, I was thinking Manley or Ferrea, anybody know what length I need to start with?
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#5
I measured stock ford valves with a dial caliper. Intake= 5.202,Exhaust=5.031

Manley lists Intake=5.244, Exhaust=5.042
Ferrea lists Intake=5.060, 5.221, 5.275, 5.349 Exhaust= 5.060

The machine shop must establish equal seat depths and angles then select appropriate keepers, retainers, and springs with the proper on the seat and over the nose pressures. The intake valve is very heavy and hard to control at high RPMs. So if going past about 6500 consider hollow stem valves, beehive springs, and light retainers.

The Ferrea site has lots of good information if you want to read it.

Chuck
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#6
Omar,
here are the valves.
-john


Attached Files Thumbnail(s)
           

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

  Reply
#7
Qmar,
I get this when I try to reply to your PM


Please correct the following errors before continuing:
•Omie01 has reached their private message quota so your message could not be sent.

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

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