383 or 355
#1
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I am going to be rebuilding the 350 in my 1997 C1500. I need help deciding on going with a 355 with the vortec heads that will have a 3 angle valve job done and bigger valves on the exhaust side. It will also have the work done to put a bigger cam in. Not sure what cam yet. I am also thinking of going 383 with the same heads and also not.sure what cam. Will the spider injection be good enough for the 383 and why cams do yall think I should put in either one.
#2
TECH Apprentice
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What do you plan on doing with the truck? A 383 with some head work and a 280 advertised duration cam would be a decent street performance combo but you'd want a higher stall torque converter if you have an AT. It really depends on what you want to do with the truck
#3
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I am planning on putting atleast a 3000 stall. I want a street/strip combo. I would like it to pull hard from mid range to top. Something to play around in the streets with the fellas from work and maybe a trip to the track every once in awhile.
#4
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The spider injection is not going to be enough for a healthy 355. If i were building one, I would go for the 383. The stuff is so cheap to build now days it is fullish not to.
#6
TECH Apprentice
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oh damn, missed the part about him sticking with the stock injection system, i skipped over that generation of chevy engine so i'm not sure what they're capable of...if it was mine i'd throw a carb on in and call it good
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#7
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Ok. I think that I am going with the 383. I want it to pull hard from mid to top. What cam do yall think would be best for it. Do I need to put bigger rockers like 1.6. I am going to do the 3 angle valve job and bigger exhaust valves in the heads so they are going to be off the truck to do the other work needed. Also what. Compression can I go up to. Looking to get the most out of.the spider injection system on the truck. I also upgraded the spider system a couple months ago. I am trying to get my truck into the low 14 to high 13 seconds in the quarter. Any help will be appreciated. Thanx
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#8
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For a site that actually will give you any real information on building up a Gen 1 Vortec go to the link below. This is an LS engine site, and most of us ( myself included) don't build up the old Vortec 350 trucks unless we are dumping the 350 into a trash dumpster.....
GM Performance :: Index
GM Performance :: Index
Last edited by 1994Vmax; 02-27-2012 at 11:46 AM.
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