BBF OEM Guru's

I was looking at a Friends BBF yesterday and noticed something strange that he hadn't noticed. It didn't have a harmonic balancer OR a hatchet weight behind the 2 row belt pulley. It was a cammed up BB in a street driven car and it was smooth (no vibration at all). Whats the deal?

PS... It had C8 heads on it.

bbf-falcon wrote:I was looking at a Friends BBF yesterday and noticed something strange that he hadn't noticed. It didn't have a harmonic balancer OR a hatchet weight behind the 2 row belt pulley. It was a cammed up BB in a street driven car and it was smooth (no vibration at all). Whats the deal?

PS... It had C8 heads on it.

With some of the early stuff, the two row belt pulley was MORE than a pulley; it was a damper with pulley grooves.

Randy,this one looked to be just a pulley,but I can inspect it more.

What Randy said..  

I have one on the shelf in the garage..

Rick I got a buddy with a c8 429 in a 67 F100 his is the same way he has been looking for a replacment but has had any luck finding the same kind. He parked his because it had slipped and his timing marks are off. Randy can a regular balancer replace that type or does it need to be the same kind. Like Rick said it the only one I have seen like that.

69F100 wrote:Rick I got a buddy with a c8 429 in a 67 F100 his is the same way he has been looking for a replacment but has had any luck finding the same kind...

Damper Dudes offers them for $96 with a core exchange, unless Mike wants to sell you his...

Thanks Paul I will let him know

There are several damper re-builders who can rebuild one of those.

I have a "special" small block early damper put together to get near a 50 in/oz with 3 bolt pattern; to put a later 302 engine into a pre-1970 vehicle ... (a 60's 28 in/oz center with a late 70's 28 in/oz outer ring).

Thx Guys for the replys. If they came like that,then I guess its ok,I just hadn't seen any STOCK oem ones like it. Never get to old to learn something new.Thx Guy's

Any prehatchet (internal)balance HB should interchange.Right?

@

Of the zillion 429-460 I've seen only one of them had the grooved dampner.....it's a wierd looking deal.

68'-69' 429-460's had the double grooved dampers. Reason being they have the shorter early (C8SE) water pump and is what needed for the pulleys to line up. The A/C pulley bolted on. The Boss 429 also used the early short water pump, but used a shorter crankshaft snout to space the damper back and used a bolt on pulley. 70 and up used the longer water pump and damper setup. You can change over to the 70 style front dress and damper. The early setup give a little more clearance to the radiator.

Thx Guy's. I had a closer look at the engine today. It's got the damper that Paul has pictured. Thanks for the info,