Showing posts with label Z28. Show all posts
Showing posts with label Z28. Show all posts

Friday, November 07, 2025

Chevys at the Optima Challenge Tuesday morning





I haven't seen this Z 28 for a couple of years, but have photographed it at the Optima Challenge before... cool car








If you look at this, and guess - Nova? Chevy II? Just like I did, that would be close, but wrong. It's close though, it's an Acadian Invader, I shit you not. Here one is selling on BAT https://bringatrailer.com/listing/1964-pontiac-acadian-invader for 12.5k


I knew at first glance that my initial guess of Nova was close, but not exactly right, so I guessed Chevy II... knowing there's something a tiny bit strange with that grill lower section that rests on the bumper. Or, is it a upper piece of bumper, something like a push bar? Anyway, that's the clue it's the Acadian Invader. Thank you Chuck for pointing me toward the Beaumont direction


it's surprising to see how much a Vette gets modified when (from what I've seen at the Optima Challenge) they don't get worked much harder than any regular street car does... VW bugs and a Toyota Yaris have been in the competition... it's not the Le Mans, not that much top speed stuff happens in the slalom or speed stop challenge

I just watched a race at Laguna Seca, speeds didn't top 125. Too many turns drop the speed to around 60



Tuesday, January 28, 2025

I'm sure at least half of you are more familiar with cams that I am... so, you've probably already know about the Z/28 cam, that there were more than one, was a surprise to me. The one I just learned of is the "Z/28 Off Road Special" also known as the 140



designed for solid lifter above 3500 rpm, to 7k

First Design Off-Road cam, P/N 3927140 
Casting #3927141 
Intake 257 duration @ .050" (333 advertised)
 Exh. 269 duration @ .050" (346 advertised) 
Lift: .493" intake, .512" exhaust 
Intake Max lift @ 108 deg. ATDC
 Exhaust Max lift @ 116 deg. BTDC

 2nd Design Off-Road cam, P/N 3965754
 Casting #3965751
 Intake 248 duration (324 advertised)
 Exh. 267 duration (334 advertised)
 Lift: .512" intake, .535" exhaust

Tuesday, November 28, 2023

69 Z/28 parked since 1984 by the owner, Larry Schreib, who published magazine articles and wrote how to books including Smokey Yunick's Power Secrets.


Parked since 1984 in a backyard.

The owner published magazine articles and wrote how to books including Smokey Yunick's Power Secrets.

It's got a hi-po built 302 by Gale Banks Engineering's engine guy, Hank The Crank, hence the crank and special rods and pistons. 
Dick Guldstrand suspension mods.

This special sbc tripower intake setup is one of 3 or 4 developed by Smokey Yunick, bought from Smokey in the early 1980's while putting together his book.

 After visiting the car and owner for 5+ years the new owner was finally was able to purchase it






Thursday, August 31, 2023

Raced in E/Stock and set a national record with a 12.01 E.T. at 114.94 MPH during the division 1 points race at York US 30 Dragway, the first "stock" Camaro to break into the 11 second bracket. Coming to auction in 2024

 

In 1970, its final year of racing, the Sea Terror held the F/Stock record and was noted as the fastest 1968 Z/28 Camaro in the country 

Original drivetrain 302/290 HP V-8 engine with its original cowl plenum air cleaner
 Muncie M21 4-speed manual transmission

Original BX code 4.88 ratio rear end

Monday, June 06, 2022

seen on today's walk


yeah, that is a Mecum auction license plate. 
 


and that is two Z 28s in a couple blocks of each other, but NEITHER is the 69 I'm hoping to find for Mike, unrestored, and for sale