Light turned green and got off the clutch very light and the car kinda choked but didn't stall. So I ran to 3k rpms and shifted to 2nd. Just driving easy. When I went to 2nd is when I noticed my trans or shifter (gear box?) Started to knock.

Any ideas?

Its a 77 280 4speed

 

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Could it be a loose gearbox mount? First think I would check are mounts, use a pry bar and try to get leverage on various points of the drive train.

Edited October 3, 20213 yr by heyitsrama

Ok I'll check it

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Could it be a loose gearbox mount? First think I would check are mounts, use a pry bar and try to get leverage on various points of the drive train.

It oddly quits knocking when you push in the clutch

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If it quits knocking when pushing the clutch, then its a clutch issue or the front half of the transmission cluster.

I dont remember the whole thread but I would suspect a main bearing issue

Does it make any other noises.

It still could be a broken transmission mount or front engine mount. The knocking you are hearing could be exhaust pipe banging against transmission cross member.

Does it make any other noises.
It still could be a broken transmission mount or front engine mount. The knocking you are hearing could be exhaust pipe banging against transmission cross member.

No I don't hear any other noise. But The gear shifter does vibrate. Ok I'll find a way to check for a broken mount

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Does it make any other noises.
It still could be a broken transmission mount or front engine mount. The knocking you are hearing could be exhaust pipe banging against transmission cross member.

No I don't hear any other noise. But The gear shifter does vibrate. Ok I'll find a way to check for a broken mount

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If it quits knocking when pushing the clutch, then its a clutch issue or the front half of the transmission cluster.
I dont remember the whole thread but I would suspect a main bearing issue

https://www.amazon.com/gp/aw/d/B001B5D7TE?psc=1&ref=ppx_pop_mob_b_asin_title
Ok I bought this clutch so hopefully this will help. And I'll Google where to buy a main bearing

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10 minutes ago, Jabronie said:

https://www.amazon.com/gp/aw/d/B001B5D7TE?psc=1&ref=ppx_pop_mob_b_asin_title
Ok I bought this clutch so hopefully this will help. And I'll Google where to buy a main bearing

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If you need a main bearing,  its due for a complete rebuild. Try to pinpoint the issue before throwing parts at it

If you need a main bearing,  its due for a complete rebuild. Try to pinpoint the issue before throwing parts at it

Makes sense. Do you think that clutch will work for my Z if I do a 5speed swap?

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I would replace clutch if I was doing a trans swap. Only because you are there.