Oil Pan Center Bolt 427/425

[Walter R.]

I just purchased and received timing chain cover for 427/425 being built. The there are no threads or a weld nut in center to receive bolt coming up in center attaching oil pan. On each end are weld nuts on cover to receive bolts at end. Could someone clarify?

[Leif A.]

Re: Oil Pan Center Bolt 427/425

Walter,
I'm not a BB guy but this picture appears to show the weld nut you say is missing on the cover you received.

http://cranescorvettesupply.com/1965-69-corvette-timing-chain-cover-bbc-427-396-for-7-pulley-and-balancer/

https://www.heartbeatcitycamaro.com/store/product/28308/1965-1966-Chevelle-Corvette-Timing-Chain-Cover-BB-8%22-Balancer-OE-Style/#

What size is your harmonic balancer...7" or 8"??

[Keith B.]

Re: Oil Pan Center Bolt 427/425

65-66 BB only had the center bolt in timing cover and oil pan. that goes for Chevelles, and Impalas too

[Walter R.]

Re: Oil Pan Center Bolt 427/425

I have an 8" HB. I just purchased the timing chain cover from Zips. There is no weld nut just an 1/8 inch hole.

[Leif A.]

Re: Oil Pan Center Bolt 427/425

I have an 8" HB. I just purchased the timing chain cover from Zips. There is no weld nut just an 1/8 inch hole.

Check this link for the 8" cover.

https://www.heartbeatcitycamaro.com/...cer-OE-Style/#

[Joe L.]

Re: Oil Pan Center Bolt 427/425

I just purchased and received timing chain cover for 427/425 being built. The there are no threads or a weld nut in center to receive bolt coming up in center attaching oil pan. On each end are weld nuts on cover to receive bolts at end. Could someone clarify?

Walter------

What you have is a later cover which had the hole but no weld-nut. For 1967+ the hole was there but unused.

[Walter R.]

Re: Oil Pan Center Bolt 427/425

Do you know if the cover with weld nut is available or will I have to weld a nut on myself?

[Joe L.]

Re: Oil Pan Center Bolt 427/425

Do you know if the cover with weld nut is available or will I have to weld a nut on myself?

Walter------

It's apparently available in reproduction as seen above. As far as availability from GM, that ended a VERY long time ago.

[Leif A.]

Re: Oil Pan Center Bolt 427/425

Do you know if the cover with weld nut is available or will I have to weld a nut on myself?

Refer to post #2 and #5 above.

[Walter R.]

Re: Oil Pan Center Bolt 427/425

Thanks to everyone. I will order correct cover.

[Ronald L.]

Re: Oil Pan Center Bolt 427/425

or you can get an original from Tracy Performance, must be 100's of them there web:
Detroitcorvette.com