Quote:
Originally Posted by UPH879
Freddie, can a billet aluminium or steel one be made to mimic the original deep groove 3 pulley part? I guess it would need some testing.....although it looks like the other products including the OE pulleys where never really tested!
Also (and I think someone has already pointed this out) surely GM knew about this and put out a better pulley on later Hi- Perf big blocks.....like LS6 454?
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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... 
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Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
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