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Old 04-09-2016, 03:53 PM   #1
BoneSaw
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#3 1968 c20 cst

First 2x4.
Stock 327 TH350
It's all there but one piece of molding. If you can spot it and you got it, I want it haha.
With keeping the stock intake manifold on how much horsepower can I get outa this motor with a rebuild? What should be done to the rear end to make this a street toy? It has HD springs.
Thanks!
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Old 04-09-2016, 05:44 PM   #2
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Re: #3 1968 c20 cst

Boy this is a striped down modal the only 2 options i see are the AT and the 327 and side molding.reminds me of my 1967 Chevy camaro all it had was a 3 speed on the floor factory with the 327.Later i was told the car is more rare then the yenko's cus every one used them for crash up car's drag car's and beaters.

I do have some good new's for you i don't a lot of leg work on the 3/4 tons of that year if yours has leaf spring rear end you can do a swap with just front spindles to 1/2 ton for 300.00 and find a 1971-87 1/2 ton that has leaf spring and you have a 1/2 ton truck with disc brakes

Check with CCP.com they make front end parts they make spindles that will take your 3/4 ton ball joint and tie rod all you need to buy is backing plate caliber rotor porshtiing valve disc brake brake hoses and you have a good nice usable 1/2 ton truck
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Old 04-09-2016, 06:30 PM   #3
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Re: #3 1968 c20 cst

I seen that on craigslist out there. Nice little rig!!!
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Old 04-09-2016, 06:38 PM   #4
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Re: #3 1968 c20 cst

Nice truck. Probably has a pretty deep rearend - since you mentioned it as a street toy, and the original trans is already long gone (TH350 never came in a 68), you could swap in an o/d trans as the most bang for the buck to get more 1st gear torque multi and much, much better highway rpm. Much more efficient than just a rear gear swap, kills two birds with one stone. That kinda cool don't come cheap though. Personally, I think that ol gal would prefer to be freshened up or restored and used as a truck!
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Old 04-09-2016, 07:15 PM   #5
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Re: #3 1968 c20 cst

You know what transmission came in the 68?
I think this is an Eaton axle.
I don't expect it to be a drag truck, but I like it to burn some rubber and get off lights.
It a 2x4 so it's gonna live on the street. ( I have two 4x4s).
I just want to get as much HP out of a motor rebuild while keeping it pretty stock and build the transmission to handle it. And maybe a position rear end.
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Old 04-09-2016, 07:27 PM   #6
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Re: #3 1968 c20 cst

Realistically about 300HP would be my guess IF its built right, the rear end is a GM 12 bolt probably, could have 3.07 or 3.42 to 1 ratio, i think that ratio was dependent on if it was a standard or auto tranny stock. If it was mine I'd not hesitate to do a rebuild.
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Old 04-09-2016, 07:36 PM   #7
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Re: #3 1968 c20 cst

Stock trans, if automatic, would have been a TH400. Guessing(!) stock rear would likely have been more like an Eaton HO with 4.10 (but not sure with an automatic... don't have my gouge stash handy )

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Old 04-09-2016, 07:39 PM   #8
Sicklajoie
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Re: #3 1968 c20 cst

That right there is my dream truck - a 68 C/20
Please leave it a 3/4 ton. Please, please, please.
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Old 04-09-2016, 07:40 PM   #9
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Re: #3 1968 c20 cst

Sweet!!!
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Old 04-09-2016, 07:42 PM   #10
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Re: #3 1968 c20 cst

Quote:
Originally Posted by Sicklajoie View Post
That right there is my dream truck - a 68 C/20
Please leave it a 3/4 ton. Please, please, please.
It's gonna stay a C20! Don't worry.
They make a kit 8lug rotors and drop spindles with new heavy duty steering.
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Old 04-09-2016, 07:43 PM   #11
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Re: #3 1968 c20 cst

I thought you were already driving your dream truck!! It's sure my dream truck!
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Old 04-09-2016, 07:48 PM   #12
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Re: #3 1968 c20 cst

Quote:
Originally Posted by jocko View Post
I thought you were already driving your dream truck!! It's sure my dream truck!
I like the 67-68 noses better.
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Old 04-09-2016, 07:48 PM   #13
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Re: #3 1968 c20 cst

Quote:
Originally Posted by BoneSaw View Post
It's gonna stay a C20! Don't worry.
They make a kit 8lug rotors and drop spindles with new heavy duty steering.
Thank you.
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Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183
Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/
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Old 04-09-2016, 07:54 PM   #14
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Re: #3 1968 c20 cst

Quote:
Originally Posted by Sicklajoie View Post
I like the 67-68 noses better.
Ya, know, they are kinda growing on me too... I've wanted to track down this one for AGES (yes, this exact one! Last seen in Prescott Valley...): 68 K20 CST Custom Camper. But I digress, sorry to hijack (!), I was getting all excited... This is a 2x4 THREAD!!!!

Btw Paul, what are your two 4x4s?
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Old 04-09-2016, 08:01 PM   #15
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Re: #3 1968 c20 cst

Sorry, more thread hijack!
http://www.ebay.com/itm/Chevrolet-Ot...m=152044686212
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Old 04-09-2016, 08:06 PM   #16
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Re: #3 1968 c20 cst

oh I've been watching that there bad boy.... Little too rich for my blood. I prefer to buy them in rough shape, sink a fortune in them, then sell them later for less than the original purchase price.
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Old 04-09-2016, 08:09 PM   #17
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Re: #3 1968 c20 cst

Quote:
Originally Posted by jocko View Post
Ya, know, they are kinda growing on me too... I've wanted to track down this one for AGES (yes, this exact one! Last seen in Prescott Valley...): 68 K20 CST Custom Camper. But I digress, sorry to hijack (!), I was getting all excited... This is a 2x4 THREAD!!!!

Btw Paul, what are your two 4x4s?
71 CST Blazer
68 GMC K2500 w utility bed.
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Old 04-09-2016, 10:23 PM   #18
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Re: #3 1968 c20 cst

nice combo
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Old 04-10-2016, 03:06 AM   #19
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Re: #3 1968 c20 cst

Quote:
Originally Posted by jocko View Post
Ya, know, they are kinda growing on me too... I've wanted to track down this one for AGES (yes, this exact one! Last seen in Prescott Valley...): 68 K20 CST Custom Camper. But I digress, sorry to hijack (!), I was getting all excited... This is a 2x4 THREAD!!!!

Btw Paul, what are your two 4x4s?
I was trying to buy that truck too! The guy who was supposed to buy my old 70 that weekend flaked out. It was my birthday that weekend, I planned on selling the 70, heading up north for some camping and then bring that truck home! Small world.
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Old 04-10-2016, 08:02 AM   #20
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Re: #3 1968 c20 cst

Cool truck , my 67 327 4 barrel three speed truck had 220 hp stock , had it rebuilt I wanted a little more hp and be reliable so 300 hp was good for me. Not much motor work, it needed a bore so it got a 30 over with a very mild cam using same Rochester carb rebuilt also and using stock exhaust manifolds with a stock type dual exhaust. I think 327 could come up to 350-375 hp from the factory, also being reliable but with different heads and intake things like that. Can't wait till its all back in and driving around.
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Old 04-10-2016, 07:16 PM   #21
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Re: #3 1968 c20 cst

Quote:
Originally Posted by NGN View Post
Cool truck , my 67 327 4 barrel three speed truck had 220 hp stock , had it rebuilt I wanted a little more hp and be reliable so 300 hp was good for me. Not much motor work, it needed a bore so it got a 30 over with a very mild cam using same Rochester carb rebuilt also and using stock exhaust manifolds with a stock type dual exhaust. I think 327 could come up to 350-375 hp from the factory, also being reliable but with different heads and intake things like that. Can't wait till its all back in and driving around.
Nick
Good to know!
I'll probably follow a similar route. 300 should be fun. I want to keep the heads and manifold on it.
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Old 04-11-2016, 09:54 AM   #22
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Re: #3 1968 c20 cst

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Originally Posted by jocko View Post
Stock trans, if automatic, would have been a TH400. Guessing(!) stock rear would likely have been more like an Eaton HO with 4.10 (but not sure with an automatic... don't have my gouge stash handy )
Was going to be my comment also , I thought all c20s had turbo 400s if they were autos , 327 is a great engine
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Old 04-11-2016, 12:17 PM   #23
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Smile Re: #3 1968 c20 cst

Quote:
Originally Posted by BoneSaw View Post
First 2x4.
It's all there but one piece of molding. If you can spot it and you got it, I want it haha.
Thanks!
....did you get your molding piece? (passenger side...back of cab, correct?)
If not, I think that is the only couple of pieces of 67/68' molding that I have off these trucks..lol.

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Old 04-11-2016, 12:56 PM   #24
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Re: #3 1968 c20 cst

Nice truck, funny--I need the same molding piece!
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Old 04-11-2016, 02:38 PM   #25
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Re: #3 1968 c20 cst

[QUOTE=Coley;7556706]....did you get your molding piece? (passenger side...back of cab, correct?)
If not, I think that is the only couple of pieces of 67/68' molding that I have off these trucks..lol.

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I haven't found an original yet, just a repop. If you've got a piece you'd be willing to part with, ID be willing to pay a fair price. It's literally the only thing I can find missing. Even the original buddy buckets the guy is gonna sell me, for extra haha
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