View Single Post
Old 07-30-2011, 02:43 PM   #43
68 TT
Still plays with trucks
 
68 TT's Avatar
 
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
Re: 69/72 Restoration/Rebuild (we ain't scared)

Quote:
Originally Posted by fastwillie 696969 View Post
that harmonic balancer needs to go wont hold up ,flex fan toss that in the can too,just my 2 cents
I second that. Outer ring slippage or the rubber getting hard make them work poorly. Any damage to the stock cast iron balancer hub area makes it a ticking time bomb. With a performance engine you really want better than stock on there and getting the SFI spec part wouldn't hurt either.

I have see too many destroyed shrouds / hoods / radiators from flex fans coming apart to ever use one again. The flex fan robs power and doesn't work that well any way. Get a good 7-blade clutch fan on there instead. More power efficient and will cool the engine much better. Electric fans are OK too if you get them into a shroud to work efficiently.
__________________
miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577
69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been
69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc
68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E
79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars

Last edited by 68 TT; 07-30-2011 at 02:52 PM.
68 TT is offline   Reply With Quote