Timing Chain Cover

[jrm3]

Team,

Can you guys furnish me the original part number for a big block timing chain cover please?  Does anyone know of one that I could purchase?

Please advise

Tre'

[rare396bronze]

What year,325,350 or 375 hp.

[69Z28-RS]

Does the timing chain cover vary across those HP values???   THAT would surprise me.. (not that I'm a BB expert)..

[z28z11]

Yep - low horse has a smaller diameter balancer, thinner, too - just like the low horse small blocks as compared to the Z. I believe the 375 horse is an 8.00" like the Z's (mine is missing in action, one of the few things I have left to source), timing cover is obviously different.

Regards,
Steve

[69Z28-RS]

Thanks Steve...     now I'm going back to my small blocks.. 

[jrm3]

This would be for a ZL-1 427 aluminum engine

[rare396bronze]

396/375hp timing cover# is 3935444. Read in Jerry's book 396/375 & 427 took same balancer so I would think timing covers would be the same. Hope this helps.

[JohnZ]

In the Corvette applications, the hydraulic-lifter engines used the 7" balancer and the solid-lifter engines used the 8" balancer.

[ko-lek-tor]

In the Corvette applications, the hydraulic-lifter engines used the 7" balancer and the solid-lifter engines used the 8" balancer.

This applies to ALL applications of passenger cars regarding the 396 (402) & 427. All 454's use an 8in. balancer with an internal counterweight made for the 454 ONLY.

[L78 steve]

In the Corvette applications, the hydraulic-lifter engines used the 7" balancer and the solid-lifter engines used the 8" balancer.

This applies to ALL applications of passenger cars regarding the 396 (402) & 427. All 454's use an 8in. balancer with an internal counterweight made for the 454 ONLY.

External.

[ko-lek-tor]

In the Corvette applications, the hydraulic-lifter engines used the 7" balancer and the solid-lifter engines used the 8" balancer.

This applies to ALL applications of passenger cars regarding the 396 (402) & 427. All 454's use an 8in. balancer with an internal counterweight made for the 454 ONLY.

External.

Internal-meaning not seen from the external, front, outside side, meaning the weight is inside of the backside of the balancer. Only talking about balancers here, not how engines are balanced. Thanks.