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09-26-2006, 11:16 PM
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#26 |
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Registered User
Join Date: Sep 2006
Location: Grundy, VA
Posts: 23
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Re: i think ive been had
jooooe it was just the fact that i was told that the truck was all originial and with what i had found so far it was lookin like it was a 305 not a 350. guess i need to learn to look into things a little better.
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09-26-2006, 11:27 PM
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#27 |
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Registered User
Join Date: May 2005
Location: PA
Posts: 2,696
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Re: i think ive been had
Your friend is right, you don't NEED vacuum advance, but in order for the engine to run most efficiently you should use it.
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09-26-2006, 11:40 PM
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#28 |
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Registered User
Join Date: Sep 2006
Location: Grundy, VA
Posts: 23
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Re: i think ive been had
thats what i thought i want to cheak the timing with a light but i dont have a timing tab on the motor and no degree marks on the balancer were would the indecator bolt to on this motor and what about the strip. could i just buy a indecator and bolt it on in a good visable location crank the motor to topdead center on # 1 cylinder and place the srip on lined up on zero?
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09-26-2006, 11:40 PM
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#29 |
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Senior Member
Join Date: Jun 2006
Location: Arkansas
Posts: 227
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Re: i think ive been had
I hate to ask but what makes you think the valves are 2.02 intake and 1.60 exhaust ? To my knowledge they weren't offered on 73 truck engines. Your "pinging" was more likely detonation and backing the timing off a couple of degrees would have certainly improved or eliminated the problem. What were the codes on the pad ? Double valve springs were common and are not a sign of superior valve train. Guide plates are a good thing but they almost certainly aren't stock.
__________________
"They that give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Ben Franklin |
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09-27-2006, 04:05 AM
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#30 |
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Registered User
Join Date: Sep 2006
Location: Grundy, VA
Posts: 23
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Re: i think ive been had
the web site he looked the numbers up on had the stock valve size listed i have the numbers ill have to get the out of the truck. what do you think is up with the running now?
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09-27-2006, 07:03 AM
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#31 | |
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Registered User
Join Date: May 2005
Location: PA
Posts: 2,696
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Re: i think ive been had
Quote:
Last edited by Jim_PA; 09-27-2006 at 07:06 AM. |
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09-27-2006, 08:02 AM
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#32 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: i think ive been had
Your lack of vacuum @the brakes could be due to the cam dynamics.I didn`t know`85 trucks still used 4-bolt mains?Your motor has been "warmed-over" for sure.The 2.02 heads were strickly a high-performance item that didn`t come on trucks,just performance model cars like Super Sports and Vettes.
It sucks that you were lied to.Or,the guy just didn`t know better himself,not unusual.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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09-28-2006, 04:40 AM
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#33 |
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Registered User
Join Date: Sep 2006
Location: Grundy, VA
Posts: 23
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Re: i think ive been had
well we got the truck running great took the cam out way to big dont know the size but it had lobes like speed bumps. we went back with a stock 89 iroc tpi 350 cam had one in the garage. does anyone know the specs on that cam. we also went with a holley street dominator intake along with the 650 holley carb this motor is a torque monster now. traction is hard to find now.
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