CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Dad's 'Mad, The no longer hibernating 1957 Nomad.

ZooMad75

#crawlabago
Staff member
Moderator
GMOTM Winner
Joined
Apr 5, 2003
Posts
11,330
Reaction score
27,966
Location
Arvada, CO
Between like-minded fools here and seeing some members of our old Nomad club it is apparent I need to get my ass in gear and get this car moving again.

The Car:
IMG_0015_NEW2.jpg

Some back story. My Dad bought the car back in 1973. The car wasn't stock then either. Gone was the 283 with a three-speed on the column. In it's place was a 327 from a Corvette. Allegedly, as it seems like everybody says a 327 is from a Corvette. Neither of us has run the stamping numbers to find out and probably won't push too hard to do so. Nonetheless, the 327 has some juice to it. It's sporting fuelie heads with an assumed 9.5-10:1 CR, solid lifter cam, and a legit LT-1 aluminum 4bbl intake topped off with a big thirsty Holley carb. It's got a noticeable chop to the idle and pulls the wagon around pretty well. Though I think technology has come along to get a similar power without dealing with the solid cam and non-hardened exhaust valve seats. The 4-speed has a Hurst Competition Plus shifter and mates up to a stock '57 rear end with a 3.50 gear.

The car was originally Inca Silver with an Imperial Ivory top. A fairly odd and rarely seen color combo that would have had the silver/black interior trim. The top had been painted the same silver as the bottom half prior to Dad getting it. There was some killer hand-laid pinstriping added to the car that is quite awesome. The interior also got changed to a tuck-n-roll style in black vinyl. Dad put a CB in it since it was the 70's, complete with a 102" whip on a mount at the back bumper. I have many memories of hauling down the highway with other Nomads on the way to the national convention and listening to truckers talk about our cars and how cool they were. Dad replaced the carpet back in the 80's as that was all that was really needed to keep it nice. Dad did add a traffic light viewer to the dash for function as well as a conversation starter. Most don't know what the hell that half-moon shaped chunk of plastic is at the base of the windshield. But anybody that's been in a tri-five that's over a certain height will know you can't see the traffic light due to the low roofline. It's a little prism that allows you to see the light without having to look up at it. The car lacks a/c but does have the deluxe heater as most Nomads did. The lack of a/c combined with the black vinyl upholstery led to many a sweaty ride not to mention seared skin on mine and my sisters legs. Mom would usually cover the seat with a sheet if we were going out of town to a convention with it.

I've mentioned going to conventions and clubs a couple of times. Since Dad got the car we've been members of the local Nomad club. The Mile High Nomad Club was the first Nomad club in the country and it's founding members also organized the National Nomad Club also known as the NNC. Dad's member number in the NNC was 2550, mine was 4550. The local club was really active back then with lots of gatherings, cruises, local weekend runs, and shows. Most members had kids as the Nomad allowed one to have a cool hotrod and still bring the whole family along. So many memories tied the car with people within the club itself. It was like having a lot of cool uncles and aunts that knew us kids as if we were their own. It was a great way to grow up. The NNC held an annual convention somewhere in the country for all the members to drive to and have fun and check out each other's cars. As much as we would have liked to go every year, we didn't always go if the location was too far away that Dad couldn't get enough time off. We drove the car to most. Dad and Mom took it to the Vail CO convention and Caspar WY convention without us kids. We were too young so we got to stay with grandparents. My first was at the Indy convention, Colorado Springs then Omaha, Rapid City and the Reunion in Frisco Colorado when the NNC ended and the new national club known as the Chevrolet Nomad Association was formed. We attended a couple without the car during the NNC days and all the conventions we've attended with the CNA without the car.

This one is from a club run to a "dude ranch" near Chugwater WY. It was NOT what the brochure showed. More like the crappy campground from the movie Vacation. The pool was a stock tank covered in slime. Most of the club members got sauced while us kids played in a hay barn as there was nothing else to do up there. We found out I get wicked hay fever that trip. I wanted to scratch my skin off.
nomad club_0008.jpg

At the Indy Convention they let us have the car show on Pit lane, the families picnic on the golf course and everybody got a couple of laps around the oval. I was three and a half here. I remember a lot of the trip despite my age.
nomad at indy.jpgIMG_0022.jpg

From the club archive photo album. Dad annoyed many in the club by snagging the plate before they could.

093.jpg


So that gives a backstory on the car. What's going on now? The car was last out of the garage in 1999. I was deep into my GM tour of duty and was not there with it. A combination of factors led to it getting locked away. The main one is me. Without me here, Dad didn't have a lot of drive or want to get the car out. My Mom and I had talked about it and according to her it just wasn't as much fun without me here. The way he parked it in the garage meant it would take a couple of hours to move stuff just to get it out and an equal amount to put it back. It was a chore. Next was the 60's era speed parts. His concern was it was too much to deal with the solid lifter cam and worried about sinking an exhaust valve running unleaded fuel. I gave him a pair of Vortec heads and he stepped up and bought a GM Vortec 4bbl intake, points conversion to electronic ignition, and carb that was less of a full race double pumper toilet than it currently has. Time sitting as allowed the new for the 70's radial white wall tires to zipper the sidewalls on all four. It's got a delicate balance of boxes parked on it now with a proportional amount of stuff under it. In other words, it's a rare shelving unit. Which irks me to no end.

Despite my move back to Colorado in 2003, living in Pueblo 2hrs away didn't help. My kid's sports, camping and later loss of full weekends moving to the dealership killed many options to work on the car. I've begged. I've pushed and get brushed off as he knows it's going to be a job to get it going. Now there is a hurdle he won't admit to that I know makes him not want to do anything with it. The loss of physical ability to do stuff is very frustrating to him. He's not used to taking help and lacks the ability to ask for it. I know he'd like to dig in and get his hands dirty, but he lacks the dexterity and stamina to go after it for any length of time. It pisses him off. I've got the ability but lack the intimate details on how a '57 much less a Nomad with many very unique features goes together. In other words, I need him in the game at least mentally to help guide me on what to do.

The list to get rolling at minimum is a set of tires, preferably some redlines but at this point anything that is round and holds air will work. I can source them from work. With the wheels off I can evaluate the brakes. If wheel cylinders aren't leaking and the rubber hoses ok, it will be semi-ok to drive. The engine will need the fluids changed out and carb cleaned up. Wouldn't hurt to put some fresh plugs in it.

Prior to getting it moved enough to get the wheels off, I'm going to have to go through the crap on it and under it. Get that stuff out of the way. That's challenge #1. Knowing my Dad's OCD tendencies, we'll have to go through each little thing to evaluate if it's in need of keeping or toss. I'd do it without him, but I need his input as I can't ID some of this stuff.

Once the car is free of crap I can move to challenge #2. The extraction. I've got a set of skates to put under the wheels to allow it to move, but that will require help to control the movement so the car doesn't go rolling down the driveway. I may end up using my winch with a snatch block attached to an anchor on the floor to control the car coming down the driveway. I'll need manpower at that stage. I know the local brotherhood and a couple of co-workers are ready willing and able to help when the time comes.

I've got some further plans once it's mobile, but I think for no more than the car may be driven the current setup will be fine. I'll get some octane boost/lead substitute for the engine.

Utimately I just want to take the big guy out and cruise in it. Maybe scare him with a few romps at WOT like he used to do to me. Point to note, I've NEVER driven this car. Sad to say that but life happens. Time to rectify that.
 
Very cool car.

So what heads are on it currently?

Martin

Going strictly off of memory since I can’t open the hood, but I remember them being double hump fuelie heads. Part of what’s driving that memory is I’ve been told it has a pretty high static compression ratio. It’s not as high as the dual quad car, but it’s 9.5 to 10.0:1 at minimum. It’s not happy on 91 octane fuel. It explains its thirst for 104 octane boost.

This is where the Vortec heads come in. With the right head gasket we can drop compression slightly but still have better flow.

Dad already had sent them off to a machine shop to get the spring pockets opened up and the valve guide bosses cut down. They have Z28 springs now. They are a coat of paint away from being ready to install.

He’s already got a cam and lifter set ready when/if we pulled the heads. It’s the GM “151” L-79 350hp 327 unit. It’s a hydraulic unit but still has a nice little rumble to the idle. And in typical Dad fashion, it’s an actual NOS GM cam in the gm cardboard tube.

I don’t mind the trade for the ultimate hp for easy street manners and less maintenance on the valve train.


That part of the project can happen after the car gets moving.
 
Going strictly off of memory since I can’t open the hood, but I remember them being double hump fuelie heads. Part of what’s driving that memory is I’ve been told it has a pretty high static compression ratio. It’s not as high as the dual quad car, but it’s 9.5 to 10.0:1 at minimum. It’s not happy on 91 octane fuel. It explains its thirst for 104 octane boost.

This is where the Vortec heads come in. With the right head gasket we can drop compression slightly but still have better flow.

Dad already had sent them off to a machine shop to get the spring pockets opened up and the valve guide bosses cut down. They have Z28 springs now. They are a coat of paint away from being ready to install.

He’s already got a cam and lifter set ready when/if we pulled the heads. It’s the GM “151” L-79 350hp 327 unit. It’s a hydraulic unit but still has a nice little rumble to the idle. And in typical Dad fashion, it’s an actual NOS GM cam in the gm cardboard tube.

I don’t mind the trade for the ultimate hp for easy street manners and less maintenance on the valve train.


That part of the project can happen after the car gets moving.
Here’s my thoughts:
Unless that 327 has a massive dome, the timing might be half of the octane requirement

So changing the heads may not make a huge compression change. Head flow is within 10 cfm or so at the lift the L79 cam uses. Could be a wash

Cam is probably the .447” Duntov. It’s a better cam for overall HP, but the L79 has a flatter torque curve. The current rockers may be 1.37s…

You might be overall happier with the new parts, I’m betting you don’t lose anything noticeable

Just a guess
 
IME, my solid cam….238/248…512/533 requires very little maintenance. Every time I check the lash , I feel it was for nothing but reassurance and a visual. I don’t feel it has radical street manors either. Therefore I’m w Wade. Drive it as is for a while, and add some zinc!
 
IME, my solid cam….238/248…512/533 requires very little maintenance. Every time I check the lash , I feel it was for nothing but reassurance and a visual. I don’t feel it has radical street manors either. Therefore I’m w Wade. Drive it as is for a while, and add some zinc!
Also modern lifters
I vote for putting it on the road the way it is. Drive it for a while before diving into it. Gives some incentive when you do work on it.

And I had better get a ride after BB.
I agree. Check the brakes and drive it
Back to the being perfect mind set
Drive it if it’s safe
 
Here’s my thoughts:
Unless that 327 has a massive dome, the timing might be half of the octane requirement

So changing the heads may not make a huge compression change. Head flow is within 10 cfm or so at the lift the L79 cam uses. Could be a wash

Cam is probably the .447” Duntov. It’s a better cam for overall HP, but the L79 has a flatter torque curve. The current rockers may be 1.37s…

You might be overall happier with the new parts, I’m betting you don’t lose anything noticeable

Just a guess
You are confirmed a lot of my thoughts on changing heads. I didn’t think it was going to be a major change but the main benefit being the hardened valve seats and it’s ability to run todays swill we have for gasoline.

The cam is probably the Duntov. I remember hearing 30/30 cam term get tossed around a lot as a kid.


I vote for putting it on the road the way it is. Drive it for a while before diving into it. Gives some incentive when you do work on it.

And I had better get a ride after BB.
That is the general plan to just get it running. For no more that it’s going to be driven I doubt it’s going to sink a valve seat. It didn’t in the 80’s that’s for sure.
IME, my solid cam….238/248…512/533 requires very little maintenance. Every time I check the lash , I feel it was for nothing but reassurance and a visual. I don’t feel it has radical street manors either. Therefore I’m w Wade. Drive it as is for a while, and add some zinc!

It’s funny you mention lashing valves. Outside of the time in ‘99 when he got it out last I can say if the car came out, I was there. I wouldn’t leave the damn thing alone. But I don’t remember Dad ever running the valves on it ever. I know he bitched about doing it but he might have done it when the car actually saw some regular street miles when I was really young.

We’ve had the carb off to fix it when it backfired and blew out the rear power valve. But never seen the valve covers off of it.

So unless the valve train has a ton of clatter when we get it fired up I’m probably going to not fuss with it. At least we won’t have an issue with a lifter not pumping up because it sat so long right?

Backup plan B for the engine is a 4bolt main 350 we stashed away when I was in college. I tore it down at school and cleaned it up in our machine shop. It needs bored but the way it measured it only needs .010 to clean up the cylinders but I couldn’t find .010 or .020 over pistons last I looked so it would have to go .030 over for decent selection of slugs. The crank had already been turned 10/10 under and is ready to go.

The idea I’ve been rattling around is get the 327 going and build the 350 for install down the road. Outside of machining, buying pistons, bearing kit and gasket set we have everything in house to build the engine. Buying a crate engine shouldn’t be needed with all we have in stock already.


I like the sound of having a 327 in the car tbh. It’s a period correct displacement for a kid hot rodding a car with what was available in the 60’s. 350’s are like belly buttons in tri-fives, everyone has got one and the rest are going LS. I don’t know it’s just nostalgic to have a wicked little 327 in the car. But if push came to shove the 350 is a great back up if I need to go that way. If I don’t use it in the Nomad, there’s a little Nova it could slide right into.


Side note. The guy that sold Dad the car in 1973 called the house (land line) and left a message asking if he still had the car. Dad is on the fence about calling him back but I had to make my feelings known that it’s not for sale.

He can sell the rest of the cars including the hardtop. The Nomad is the one I’m attached to.
 
Pull the distributor and pump the oil up before you start it. I would also pull the valve covers to check for a collapsed valve spring before firing it up.

Dad has a old dizzy that’s ready to be chucked up into a drill for that exact purpose. Hell, I even know where it is. Which is scary knowing how the shop looks.

I plan on pulling the plugs and shooting some oil into the cylinders. Pre-lubing with the drill after changing the oil. And then turning over by hand before the starter is kicked. It really shouldn’t take much the get the engine going from there.
 
Good plan!
what oil, filter, additive you plan on running?
I’ve heard people say do not run full syn in old engines, but thats all Ive run in all of my engines w flat tappets, hyd. or solid.
I add a bottle of zinc additive each oil change, w a Wix filter.

E9C45BC7-5F68-4B61-92FE-38168F244BF8.jpeg
 

Latest Posts

Top Bottom