Citrus green 1970 z28 restoration thread

Rosster

Veteran Member
Gold Member
Mar 1, 2020
941
39F79778-638C-400D-B070-88A1702118F5.jpeg
BAA1D873-CA11-45A0-A6CE-16F599803591.jpeg
FB230FE4-F747-4532-BE9C-52B0A45D8098.jpeg
F4F5F2E5-FC7C-4BCD-BA15-D1B39C5BB376.jpeg
53EDAED8-3E08-4B3D-91CD-68B70B3C3CED.jpeg
BF943CDA-745E-4D7D-BC73-4C9EB414F47B.jpeg
DCCEF019-57B3-4FC7-BC5E-A437D6EC1124.jpeg
Just wanted to show starting efforts on this all original numbers matching 1970 z28. Currenty sits in astro blue but will be going back to citrus green it’s original color. The car sat unmolested in a garage for 18 years And was ziebarted when new so rust is not too bad- just 1 trunk drop and a few spots on the drivers rear quarter. Typical rust on the corners of the front window, but the rear window channel looks to have been repaired when itmwas painted 25+ years ago.

The car came with the protectoplate and warranty paperwork. I was able to Get in contact with the original owner (in his 80s now) and hoping to get some pics from him when it was on the showroom floor.

The car is a std black interior w/ decor package and center console. 4:10 and m21 transmission. Car has 70k and engine has never been out of the car. Everything is there so ot’s mostly disassemble, clean, refinish, and reinstall. A special thanks to Ryan Lusman for giving me a great deal on the car and making the transaction go smoothly!

here’s a few before shots as a starting point:
 
Last edited:

Rosster

Veteran Member
Gold Member
Mar 1, 2020
941
EBCC4CAF-8095-4970-A293-51CDF8986C5B.jpeg
32F88CD6-4C24-4F91-A1D1-AF68F64850B2.jpeg
E9EC1EE6-D9C0-45F7-943E-F3BB1F9A6240.jpeg
4A6C39DD-E693-42EF-AB09-C88378C95130.jpeg
Engine and transmission out today. Pulled pan To look everything over. This engine shedded it’s plastic teeth on the cam gear and bent the pushrods at 70k and has been sitting for 18 years. Lower end looks brand new. Likely just new std size bearings and good to go. Should have the block fully disassembled this week and measure everything up to determine my plan of action.
 
Last edited:

Da-bigguy

Veteran Member
Lifetime Gold Member
Jan 19, 2010
6,113
Cypress, TX
Looks like a great start and I think it will look great going back to the original Citrus Green. Looking forward to seeing lots more pics!
 

Rosster

Veteran Member
Gold Member
Mar 1, 2020
941
Pulled transmission cover. Everything is like new inside. Even brass syncro rings look new. Car had 70k on it and still had original clutch too! I guess 4:10s are pretty easy on the clutch. Barely any flywheel wear and clutch disc was decent shape. Barely anything on The magnetic drain plug too. More parts degreasing, blasting, and repainting. Will have my Son in law down friday to show him engine disassembly and measuring parts for wear. Looking at lifters they are done (concave not convex anymore) so will have to determine plans for replacement cam. More info after that post.
 

Rosster

Veteran Member
Gold Member
Mar 1, 2020
941
23007C9B-47F3-4B8C-B310-CB8F1CE04B58.jpeg
3C6A317B-8104-4412-A33F-99326DBA8783.jpeg
8BA68B0B-E5DB-44AA-BAD0-B0EE3F714EBC.jpeg
704D1C69-06BB-4CED-8538-2DD07577A88A.jpeg
Engine disassembled and all measuring done. Crank is still perfect with zero wear and less than .0002 runout. Will micropolish journals and chamfer oil holes. Cylinders have .003” wear and taper so new pistons and rings are planned. Heads will need new valve guides, valves, springs, and retainers. Likely going back without valve seat inserts and using manley SS valves. One spring was broken but other than normal wear, they look good without any obvious cracks between valve seats.

although cam looked good, lifters were cupped so time to figure a replacement. Still looking at options and Whether to use a different cam than stock specs. It’s been so long I can’t remember what a stock lt-1 sounded like at idle.
 
Last edited:

secondgenaddict

Veteran Member
Dec 29, 2012
457
Upstate South Carolina
Looks like a very nice project... not near as much of a project as I have seen ALOT of people start with...
Nice looking interior which should clean up very well.
Those are the original door panels and the reproductions are no where near as nice as originals so you will want to be as gentle as possible with them.
Originals are made from leatherette paper(like the cover on a old yearbook) NOT vinyl like reproduction.
 

Rosster

Veteran Member
Gold Member
Mar 1, 2020
941
0EFF90E8-EFCB-432A-84F8-381ED3854012.jpeg
239D73EF-B9C8-45D2-9113-37CFC7240E24.jpeg
6E6D8C4B-525E-41DB-BA57-D50C65A03B23.jpeg
Well, parts are off to machine shop. I should get Everything back in mid January and then can finish reassembly and wrap up drive train portion of the work so I can begin focusing on the body . Also transmission is in the process or reassembly so will finish up this week. The only parts it needed were cluster gear thrust washers and shift forks. Otherwise it looked brand new.
 
Last edited:




Top