My Highschool Project truck a 1969 GMC C20 (Old Blue) - Page 3 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Wideopenracing15 · 11-10-2009, 08:29 PM

Thats sweet man! Yeah as far as I know the camaro tach should still work for your 6 banger. Search for the Tach swap thread it should tell you.

292farmer · 11-10-2009, 08:48 PM

yeah seems it will work, normally id not throw a fit so much about the tach but the motor redlines at 5000rpm and its got 4.56gears out rear and according to my math that means im running 3100-3300rpm at 55mph well over half throttle and probably not good for the motor over extended periods of time.

Wideopenracing15 · 11-10-2009, 09:24 PM

I know the feeling I have 4.10 Gears so interstate should be avoided lol. Im running like 31-3400 but I was never good at math lol

oldblue1968chevy · 11-10-2009, 10:01 PM

yall're gonna blow up lol

292 farmer, wats up with your gas guage?

Wideopenracing15 · 11-11-2009, 12:47 PM

It wasnt running when he took the pic. Mine does it too.

292farmer · 11-11-2009, 05:50 PM

yeah when its off it shoots all the way to past full, once or twice past empty lol, yeah it sounds like it will sometimes blowup, which is why im planning on rebuilding the motor with a upgraded intake, with a 500cfm demon 2bbl carb, headers, and a clifford cam, 1.94intake/1.5exh valves and the head shaved .060 and pistons bored .060 over should yield 9.5:1 comp. the new motor will have a 6000rpm redline not a 5000rpm red line yeah!! speed

thiscombo according to people ive talked to will yield 260-280hp and 370-390lbs/tq

Wideopenracing15 · 11-11-2009, 05:57 PM

You already have a rev limiter? I think that would be a sweet rig. Not very often do you see a high horse straight 6.

292farmer · 11-11-2009, 06:26 PM

yeah took one off my dads old rigs i have it set at 4500rpm not the suggested 5000rpm max longevity in mind lol, yeah the performance 6cyl idea i think was way better then the usual sbc or bbc swap, which i love dont get me wrong ive had 4 sbc and a 650hp 496ci bbc that id built my self for my 77 impala, ive always loved the inline 6's had a 1980 c10 with a 250i6 with th350 had that cammed out to 240hp it would fly off the line and hold even with my buddys 2005 f150 with the 5.4 till 45-50mph then the v8 pulled ahead,, the trick is to beat him in corners or pick short roads

Wideopenracing15 · 11-11-2009, 06:29 PM

As much as I love bored out small blocks or bigblocks I think its cooler to have a quick little 6 banger or even a 307. Everyone can make big numbers out of a big block chevy or make a quick revving small block but it takes real ambition to build a i6.

Wideopenracing15 · 11-11-2009, 06:31 PM

And nothing is more embarressing than getting beat in your bbc by a little 6 banger lol

292farmer · 11-11-2009, 06:43 PM

yep, i always wanted to try my 496ci impala verses my 80 250i6 but i didnt trust anyone to drive my vehicles cuz i cant drive both at once..sooo never got them compared...

Wideopenracing15 · 11-12-2009, 07:57 PM

Haha I guess that would be a little hard.

292farmer · 11-13-2009, 11:42 PM

wooot!!! got truck registered yesterday drove it to work! only cost 88$! but forgot i needed a heater core, it was 27degrees out brrrrrr. lol

VA72C10 · 11-14-2009, 12:11 AM

Congrats!

Wideopenracing15 · 11-14-2009, 10:25 PM

Congrats man! Haha I know the feeling. My heater core actually blew out and leaked antifreeze all over the cab in my truck the first day i drove it.

Sacramento70 · 11-14-2009, 11:46 PM

cool color planning a full restore or fix and drive it?

Wideopenracing15 · 11-14-2009, 11:49 PM

Well currently the imcome has gone downhill lol so right now just drive it. I plan on fixing the cab and putting the interior together and paint it a solid color. Or getting me a half ton. Im pretty much on the fence.

292farmer · 11-16-2009, 11:12 PM

rebuilt my carburetor last night it was running way too lean, stumbled hard and was getting worse turns out someone had rebuilt it before and used silicone to seal the gaskets it had got into everything jets holes and the acc. pump, float was low too and the carb is for a 77 or later motor not a 72 so lean running anyways. went to replace exhaust flange gasket but both studs broke off in manifold so drilled them out tonite and retapped, gonna put the new studs in tomm and FINALLY get the gasket in, btw open exh. manifold 292i6 sounds badass!!!

if your tight on money if u got a dremel tool u can get some grinder heads and do some porting your self on the heads, its slower then normal but if u read up on it and get it close it has same effect my dad did it to my 86' chevy. cheap way to increasehp, just be careful u dont break any bolts off!! (i know it sucks)

Cw72gmc · 11-17-2009, 02:15 AM

Quote:

Originally Posted by Wideopenracing15

I'm not really either. I have a 69 chevy grille that I'm thinking about throwing in. Unless I just get a different truck.

Ouch Buddy..hahaha Gotta learn to love how much class the GMC front end has!!

Hope your project is going well...

Wideopenracing15 · 11-17-2009, 06:51 PM

I've been thinking about doing that 292farmer I have some spare Heads laying around and I have free time so I think I'm going to do it.

Cw72gmc i think I'm starting to become a 4 headlight man myself. I'm deffintly goin to keep the grille.

Wideopenracing15 · 11-17-2009, 06:52 PM

Oh but I might use a die grinder lol

Cw72gmc · 11-17-2009, 08:33 PM

Quote:

Originally Posted by Wideopenracing15

I've been thinking about doing that 292farmer I have some spare Heads laying around and I have free time so I think I'm going to do it.

Cw72gmc i think I'm starting to become a 4 headlight man myself. I'm deffintly goin to keep the grille.

Thats what I like man, I dk it grew on my to when I got mine. There just aren't many of them as there are chevy front ends.

How is your truck doing?

Wideopenracing15 · 11-17-2009, 11:51 PM

She's runnin as good as I could ask from an old truck. The motor is strong but weak if that makes sense lol. I think the bottom end is getting weak.

Let's hear a little about your truck.

292farmer · 11-22-2009, 10:26 AM

luckily small blocks are cheap to rebuild lol, ihave to say that its going to be a long winter if my truck keeps freezing to the point it wont start, ive nearlykilled the battery 4 times, i think its the starter not the motor, because i can grab the pulley to the crank and crank the motor so i know its not stuck, so maybe...the starters freeezing? anyone had this happen? keep in mind its been around 20* when doing this so may not be much i can do

pat 70/71 · 11-22-2009, 12:29 PM

My truck door latch / window reg did the same thing. dont buy a new latch remove it & use pb blaster/ wd 40 work the latch by hand &it will be fine (make sure the re turn spring is still there) great truck have fun PAT

11-10-2009, 08:29 PM	#51
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) Thats sweet man! Yeah as far as I know the camaro tach should still work for your 6 banger. Search for the Tach swap thread it should tell you.

11-10-2009, 08:48 PM	#52
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) yeah seems it will work, normally id not throw a fit so much about the tach but the motor redlines at 5000rpm and its got 4.56gears out rear and according to my math that means im running 3100-3300rpm at 55mph well over half throttle and probably not good for the motor over extended periods of time.

11-10-2009, 09:24 PM	#53
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) I know the feeling I have 4.10 Gears so interstate should be avoided lol. Im running like 31-3400 but I was never good at math lol

11-10-2009, 10:01 PM	#54
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) yall're gonna blow up lol 292 farmer, wats up with your gas guage? __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

11-11-2009, 12:47 PM	#55
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) It wasnt running when he took the pic. Mine does it too.

11-11-2009, 05:50 PM	#56
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) yeah when its off it shoots all the way to past full, once or twice past empty lol, yeah it sounds like it will sometimes blowup, which is why im planning on rebuilding the motor with a upgraded intake, with a 500cfm demon 2bbl carb, headers, and a clifford cam, 1.94intake/1.5exh valves and the head shaved .060 and pistons bored .060 over should yield 9.5:1 comp. the new motor will have a 6000rpm redline not a 5000rpm red line yeah!! speed thiscombo according to people ive talked to will yield 260-280hp and 370-390lbs/tq

11-11-2009, 05:57 PM	#57
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) You already have a rev limiter? I think that would be a sweet rig. Not very often do you see a high horse straight 6. Last edited by Wideopenracing15; 11-11-2009 at 06:26 PM.

11-11-2009, 06:26 PM	#58
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) yeah took one off my dads old rigs i have it set at 4500rpm not the suggested 5000rpm max longevity in mind lol, yeah the performance 6cyl idea i think was way better then the usual sbc or bbc swap, which i love dont get me wrong ive had 4 sbc and a 650hp 496ci bbc that id built my self for my 77 impala, ive always loved the inline 6's had a 1980 c10 with a 250i6 with th350 had that cammed out to 240hp it would fly off the line and hold even with my buddys 2005 f150 with the 5.4 till 45-50mph then the v8 pulled ahead,, the trick is to beat him in corners or pick short roads

11-11-2009, 06:29 PM	#59
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) As much as I love bored out small blocks or bigblocks I think its cooler to have a quick little 6 banger or even a 307. Everyone can make big numbers out of a big block chevy or make a quick revving small block but it takes real ambition to build a i6.

11-11-2009, 06:31 PM	#60
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) And nothing is more embarressing than getting beat in your bbc by a little 6 banger lol

11-11-2009, 06:43 PM	#61
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) yep, i always wanted to try my 496ci impala verses my 80 250i6 but i didnt trust anyone to drive my vehicles cuz i cant drive both at once..sooo never got them compared...

11-12-2009, 07:57 PM	#62
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) Haha I guess that would be a little hard.

11-13-2009, 11:42 PM	#63
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) wooot!!! got truck registered yesterday drove it to work! only cost 88$! but forgot i needed a heater core, it was 27degrees out brrrrrr. lol

11-14-2009, 12:11 AM	#64
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,267	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) Congrats! __________________ Looking for a 67-72 swb or blazer project in or around VA.

11-14-2009, 10:25 PM	#65
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) Congrats man! Haha I know the feeling. My heater core actually blew out and leaked antifreeze all over the cab in my truck the first day i drove it.



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11-14-2009, 11:46 PM	#66
Sacramento70 Blazer Fanatic Join Date: May 2009 Location: Sacramento, ca Posts: 249	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) cool color planning a full restore or fix and drive it? __________________ 1970 Chevy blazer

11-14-2009, 11:49 PM	#67
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) Well currently the imcome has gone downhill lol so right now just drive it. I plan on fixing the cab and putting the interior together and paint it a solid color. Or getting me a half ton. Im pretty much on the fence.

11-16-2009, 11:12 PM	#68
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) rebuilt my carburetor last night it was running way too lean, stumbled hard and was getting worse turns out someone had rebuilt it before and used silicone to seal the gaskets it had got into everything jets holes and the acc. pump, float was low too and the carb is for a 77 or later motor not a 72 so lean running anyways. went to replace exhaust flange gasket but both studs broke off in manifold so drilled them out tonite and retapped, gonna put the new studs in tomm and FINALLY get the gasket in, btw open exh. manifold 292i6 sounds badass!!! if your tight on money if u got a dremel tool u can get some grinder heads and do some porting your self on the heads, its slower then normal but if u read up on it and get it close it has same effect my dad did it to my 86' chevy. cheap way to increasehp, just be careful u dont break any bolts off!! (i know it sucks)

11-17-2009, 06:51 PM	#70
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) I've been thinking about doing that 292farmer I have some spare Heads laying around and I have free time so I think I'm going to do it. Cw72gmc i think I'm starting to become a 4 headlight man myself. I'm deffintly goin to keep the grille.

11-17-2009, 06:52 PM	#71
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) Oh but I might use a die grinder lol

11-17-2009, 11:51 PM	#73
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) She's runnin as good as I could ask from an old truck. The motor is strong but weak if that makes sense lol. I think the bottom end is getting weak. Let's hear a little about your truck.

11-22-2009, 10:26 AM	#74
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) luckily small blocks are cheap to rebuild lol, ihave to say that its going to be a long winter if my truck keeps freezing to the point it wont start, ive nearlykilled the battery 4 times, i think its the starter not the motor, because i can grab the pulley to the crank and crank the motor so i know its not stuck, so maybe...the starters freeezing? anyone had this happen? keep in mind its been around 20* when doing this so may not be much i can do

11-22-2009, 12:29 PM	#75
pat 70/71 Registered User Join Date: Nov 2009 Location: newbury park california Posts: 1,038	Re: My Highschool Project truck a 1969 GMC C20 (Old Blue) My truck door latch / window reg did the same thing. dont buy a new latch remove it & use pb blaster/ wd 40 work the latch by hand &it will be fine (make sure the re turn spring is still there) great truck have fun PAT Last edited by pat 70/71; 11-22-2009 at 12:30 PM.

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