Offshoreonly.com - Cam gear for thunderbolt on a 500 EFI cam

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regalman4925

10-15-2019 12:24 PM

Cam gear for thunderbolt on a 500 EFI cam

I am running cams out of 500EFIs and using thunderbolt distributors that I think came off of mid 90s 350s, I need to know if I need to swap my distributor gear for a bronze gear? I have read that they used crane cams in the blue engines and a steel gear was ok but I do not want to find out the hard way. I would appreciate any info. Thanks

SB	10-15-2019 12:37 PM

Crane cams that part #'s end in IG have iron gears.

F-2 Speedy

10-15-2019 12:40 PM

stock dist gear on a 500 efi is iron, at least all the ones Ive seen

mike tkach

10-16-2019 08:57 AM

i would give crane cams a call but i use a melonized gear with crane hyd roller cams.

BUP	10-17-2019 06:09 PM

Quote:

Originally Posted by mike tkach (Post 4710964)

i would give crane cams a call but i use a melonized gear with crane hyd roller cams.

bingo

Rookie

11-18-2019 09:27 PM

I'm building some 454's with 500EFI cams and for $33/melonized gear it's worth the piece of mind changing it.
Is the thunderbolt distributor 0.491" or 0.500"?

Griff

11-19-2019 01:51 AM

I ran the stock TB IV dist gear with a Crane 731 with no problem for 150+ hrs(sold boat), but that was like 15 years ago.

mike tkach

11-19-2019 05:34 AM

Quote:

Originally Posted by Rookie (Post 4715530)

I'm building some 454's with 500EFI cams and for $33/melonized gear it's worth the piece of mind changing it.
Is the thunderbolt distributor 0.491" or 0.500"?

every one i have seen was .491.

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