1967 SM-420 hard shifting into 2nd gear. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

realsteelGM · 08-13-2024, 05:32 PM

Doing full tear down and rebuild on 1967-283 corvette block. Decided to inspect internals in transmission as it is a difficult to shift down from 3rd to second gear. Can I just order new syncro ring and parts for this and install. I've noticed other GM and chevy trucks with the same problem with shifting down from 3rd gear. Double clutching makes for smooth shifting however it's tricky in high traffic.

**HO455** · 08-13-2024, 09:08 PM

Check with Novak. They're a good vendor always will to help with questions and lots of parts for SM-420's. They're Jeep folks and the crawler crowd likes SM-420's, which is good for us.

https://www.novak-adapt.com/

**Sheepdip** · 08-14-2024, 01:15 AM

Quote:

Originally Posted by HO455

Check with Novak. They're a good vendor always will to help with questions and lots of parts for SM-420's. They're Jeep folks and the crawler crowd likes SM-420's, which is good for us.

https://www.novak-adapt.com/

I second Novak...I have used their parts and adapters over the years with zero issues.

realsteelGM · 08-14-2024, 02:15 AM

Quote:

Originally Posted by HO455

Check with Novak. They're a good vendor always will to help with questions and lots of parts for SM-420's. They're Jeep folks and the crawler crowd likes SM-420's, which is good for us.

https://www.novak-adapt.com/

Yes indeed, called them today, they are located in Utah. Problem is I live in the Yukon, next to Alaska, shipping and exchange rate will be major.

realsteelGM · 08-14-2024, 02:19 AM

Quote:

Originally Posted by Sheepdip

I second Novak...I have used their parts and adapters over the years with zero issues.

Yes they have what I need, however I live in Yukon, Canada. Gets pricey with shipping and exhange rate.

**HO455** · 08-14-2024, 08:44 PM

You might try a local or semi local 4x4 place to see if they do business with Novak and then have them put your parts on their next stock order. It would be slow but should be cheaper.

realsteelGM · 08-15-2024, 01:30 PM

Quote:

Originally Posted by HO455

You might try a local or semi local 4x4 place to see if they do business with Novak and then have them put your parts on their next stock order. It would be slow but should be cheaper.

Thanks for the advice on that shipping plan.

08-13-2024, 05:32 PM	#1
realsteelGM Registered User Join Date: Jan 2007 Location: Whitehorse, Yukon, Canada Posts: 169	1967 SM-420 hard shifting into 2nd gear. Doing full tear down and rebuild on 1967-283 corvette block. Decided to inspect internals in transmission as it is a difficult to shift down from 3rd to second gear. Can I just order new syncro ring and parts for this and install. I've noticed other GM and chevy trucks with the same problem with shifting down from 3rd gear. Double clutching makes for smooth shifting however it's tricky in high traffic. __________________ "gotta love something that works without a computer"

08-13-2024, 09:08 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,270	Re: 1967 SM-420 hard shifting into 2nd gear. Check with Novak. They're a good vendor always will to help with questions and lots of parts for SM-420's. They're Jeep folks and the crawler crowd likes SM-420's, which is good for us. https://www.novak-adapt.com/ __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

08-14-2024, 08:44 PM	#6
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,270	Re: 1967 SM-420 hard shifting into 2nd gear. You might try a local or semi local 4x4 place to see if they do business with Novak and then have them put your parts on their next stock order. It would be slow but should be cheaper. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.