Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 08-10-2020, 08:21 PM   #1
old Tom
Senior Member
 
Join Date: May 2010
Posts: 167
Default Isky or Potvin

Did the late Jazzy Nelson use a Isky or Potvin cam in his FH powered car. I do know it was pretty fast for it time. The Bean bandits used to respect it.
old Tom is offline   Reply With Quote
Old 08-10-2020, 08:27 PM   #2
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 3,898
Default Re: Isky or Potvin

505A Isky.
Pete is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 08-10-2020, 08:34 PM   #3
old Tom
Senior Member
 
Join Date: May 2010
Posts: 167
Default Re: Isky or Potvin

Does the 505 represent the lift as the 404 did?
old Tom is offline   Reply With Quote
Old 08-10-2020, 09:00 PM   #4
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 3,898
Default Re: Isky or Potvin

Approximately. It has .515 lift.
Pete is offline   Reply With Quote
Old 08-10-2020, 09:11 PM   #5
old Tom
Senior Member
 
Join Date: May 2010
Posts: 167
Default Re: Isky or Potvin

That's amazing. I never heard of that cam before. I wonder if Tom Beaty(sp) was aware of it or maybe it was not a good cam for the salt flats.
old Tom is offline   Reply With Quote
Old 08-10-2020, 09:35 PM   #6
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 3,898
Default Re: Isky or Potvin

Sponsored Links (Register now to hide all advertisements)
Quote:
Originally Posted by old Tom View Post
That's amazing. I never heard of that cam before. I wonder if Tom Beaty(sp) was aware of it or maybe it was not a good cam for the salt flats.
Isky only made 3. Only one is left.The 3rd one dissappeared.
I talked to Tom many times at Bonneville but we never discussed cams.
I am sure he was aware of it. It would work very well at Bonneville.
Pete is offline   Reply With Quote
Old 08-11-2020, 09:03 AM   #7
old Tom
Senior Member
 
Join Date: May 2010
Posts: 167
Default Re: Isky or Potvin

Have you ever tried to grind a 505A or would it be impossible to do without a core to start with?
old Tom is offline   Reply With Quote
Old 08-11-2020, 02:28 PM   #8
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 3,898
Default Re: Isky or Potvin

Quote:
Originally Posted by old Tom View Post
Have you ever tried to grind a 505A or would it be impossible to do without a core to start with?
I have done one.
Pete is offline   Reply With Quote
Old 08-12-2020, 08:07 AM   #9
Ol' Ron
Senior Member
 
Ol' Ron's Avatar
 
Join Date: May 2010
Location: Chester Vt
Posts: 7,635
Default Re: Isky or Potvin

Pete, what kind of springs do you use for that? Is this a roller cam?
Ol' Ron is offline   Reply With Quote
Old 08-12-2020, 01:34 PM   #10
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 3,898
Default Re: Isky or Potvin

Quote:
Originally Posted by Ol' Ron View Post
Pete, what kind of springs do you use for that? Is this a roller cam?
Springs are 4 coil special. Similar to 410 sprint car engine.
This is a radius lifter type. Uses same lifters as 404A.
Pete is offline   Reply With Quote
Old 08-12-2020, 02:40 PM   #11
Ol' Ron
Senior Member
 
Ol' Ron's Avatar
 
Join Date: May 2010
Location: Chester Vt
Posts: 7,635
Default Re: Isky or Potvin

Rana 404 once, wazent happy with it!! 400 jr ran better, but that was probably my fault.
Ol' Ron is offline   Reply With Quote
Old 08-22-2020, 01:28 PM   #12
lonewolf
Senior Member
 
Join Date: May 2010
Location: Michigan
Posts: 408
Default Re: Isky or Potvin

505 lift. I take it you need a billet cam with no cam bearings in the block? Or you modify the block for that much lift?
lonewolf is offline   Reply With Quote
Old 08-22-2020, 03:25 PM   #13
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 3,898
Default Re: Isky or Potvin

Quote:
Originally Posted by lonewolf View Post
505 lift. I take it you need a billet cam with no cam bearings in the block? Or you modify the block for that much lift?
Yes on billet core.
Yes on running journals in bare block.
No mods to block for lift.
Pete is offline   Reply With Quote
Old 08-22-2020, 05:38 PM   #14
Bored&Stroked
Senior Member
 
Bored&Stroked's Avatar
 
Join Date: Jan 2011
Location: Central Ohio
Posts: 2,823
Default Re: Isky or Potvin

And here are some pictures of the 505A that Pete is talking about - with some side-by-side shots against the 404A.

I have yet to run the cam, need to build a very "special" engine for it.

505-A-lowres.jpg

505-404-Fronts-lowres.jpg

505-404-TopBottom-lowres.jpg

And Jazzy Nelson's Coupe . . . probably the fastest drag coupe that ever ran a flathead. Jazzy ran the 404A quite a bit, but "wanted something bigger - and a secret grind" - that is when Ed made the 505 for him.

JazzyNelsonFiatCoupe.jpg
Bored&Stroked is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 01:40 PM.