Ignition curv

jhilton

Seaman
Joined
Nov 23, 2008
Messages
66
Can someone post the ignition curv for a Thunderbolt IV, 1987 454. And will it work on a 350?
 

boatguya1

Chief Petty Officer
Joined
Apr 24, 2009
Messages
444
Re: Ignition curv

The adults only post at the top of the page has manual downloads that will have graphed out timing curves in them.

James
 

jhilton

Seaman
Joined
Nov 23, 2008
Messages
66
Re: Ignition curv

I am trying to download it. I have about 7 hours left to get it. All I need is the curv. And if it will work on a 350.
 

jhilton

Seaman
Joined
Nov 23, 2008
Messages
66
Re: Ignition curv

Well I clicked a wrong button, Thats 4 hours of downloading down the tubes. I guess it will be 8 more for the download. It would be a big help if someone could post the curve for me.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Ignition curv

What year Chevy 350 do you have?
 

jhilton

Seaman
Joined
Nov 23, 2008
Messages
66
Re: Ignition curv

1989 boat, did not get the boat with a marine engine have put everything back to marine, all parts are for 1989, the TB 4 is off of a 1987 454 scarab
 

Don S

Honorary Moderator Emeritus
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Aug 31, 2004
Messages
62,321
Re: Ignition curv

attachment.php
 

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Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Ignition curv

This is the one for the 89 TB4. I haven't compared them, just posted them for you.

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