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Forum: L78/L89 specific Forum 07-31-2023, 04:41 AM
Replies: 24
Views: 3,790
Posted By Too Many Projects
Looks like 3921923 Crank Pulley is listed for all...

Looks like 3921923 Crank Pulley is listed for all big blocks that used the deep groove.. L72, L78, L89, LS6. This could be in correct, as it's info I got off the web...:dunno:
Forum: L78/L89 specific Forum 07-28-2023, 02:42 PM
Replies: 24
Views: 3,790
Posted By Too Many Projects
I see I never followed up on this. I did call the...

I see I never followed up on this. I did call the manufacturer/distributor and the grooves are standard depth, so mostly a stock replacement, or dress up part.
Forum: L78/L89 specific Forum 07-13-2023, 03:10 AM
Replies: 24
Views: 3,790
Posted By Too Many Projects
Very nice, Freddie. Maybe you can market...

Very nice, Freddie. Maybe you can market that...:dunno:
Forum: L78/L89 specific Forum 07-10-2023, 09:07 PM
Replies: 24
Views: 3,790
Posted By Too Many Projects
That would be cool to reinforce yours. I found...

That would be cool to reinforce yours.
I found a billet pulley on-line last night in Black, but it doesn't seem to exist anymore. I should call the manufacturer and ask.
Forum: L78/L89 specific Forum 07-10-2023, 07:29 PM
Replies: 24
Views: 3,790
Posted By Too Many Projects
Yes, the part number I posted is for 1967-68 3...

Yes, the part number I posted is for 1967-68 3 groove cast pulleys used with short water pump configuration. As far as I can come up with from research, they will work for 1965-66 also, but not...
Forum: L78/L89 specific Forum 07-10-2023, 06:29 PM
Replies: 24
Views: 3,790
Posted By Too Many Projects
Freddie, aren't your pulleys formed steel ? The...

Freddie, aren't your pulleys formed steel ? The pulley for the swp is cast. I'm surprised you don't have belts flying off the standard pulley's. Maybe I'm OK with that too. I will definitely change...
Forum: L78/L89 specific Forum 07-10-2023, 02:27 PM
Replies: 24
Views: 3,790
Posted By Too Many Projects
Original would be my first choice, but they are...

Original would be my first choice, but they are difficult to find and my "disposable income" account is down to dust. My part time job went away 15 months ago. I really need to find another part time...
Forum: L78/L89 specific Forum 07-10-2023, 12:32 PM
Replies: 24
Views: 3,790
Posted By Too Many Projects
L78 crank pulley, need help, experience, opinions

I've been attempting to find a 3869978 deep groove crank pulley to run on a 1970 454 engine with swp and PS in my '66 Chevelle.

I see HBC has one made in the US. No mention of any restrictions.
...
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