Newby questions....350 to 383 conv.

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Newby questions....350 to 383 conv. - 4/7/2007 12:57:24 AM    sumner   Posts: 6 Joined: 4/7/2007 Status: offline Hi all.  New to the site and new to blazers.  Have a couple of questions:  I have a 94 blazer with 5.7ltr 350 TBI.  I just bought the thing a couple of months ago.  The engine has 195000 miles on it.  I want to put a stand alone 383 stroker in it(carburated), but Im not sure about using the tranny with this setup.  Its the electronic tranny 4l60e.  I have been told that I can use this, but there is something you have to do to the valve body, and need a different torque converter.  Any Ideas???  Also, does the ecm control anything else besides the fuel injection and timing?  Can I just remove the computer when I put this engine in???  Sorry about the long post, just trying to figure all of this out. Thanks for any info _____________________________ 1994 Blazer full size, 5.7ltr 350, 4 inch lift, 33 BFGs Post #: 1

RE: Newby questions....350 to 383 conv. - 4/13/2007 5:06:54 PM    sumner   Posts: 6 Joined: 4/7/2007 Status: offline ANYBODY??????? (in reply to sumner) Post #: 2

RE: Newby questions....350 to 383 conv. - 4/13/2007 5:22:08 PM    drperry Posts: 3901 Joined: 1/12/2007 From: GP AB CA Status: offline The 4L60E is controlled by the ECM. I think the transmission you'd be looking for is the 700R4 but I can't say for sure... Just get it set up for a TBI 383... _____________________________ (in reply to sumner) Post #: 3

RE: Newby questions....350 to 383 conv. - 4/15/2007 11:00:48 PM    sumner   Posts: 6 Joined: 4/7/2007 Status: offline Actually, I want to do away with the computer.  What im looking at is running a Turbo 400 behind the 383.  Heres a question for you:  Will any of my guages work on the dash if I do this?  How will I run the speedo?  Any info is appreciated.  Engine will be here in about a month, so I need to figure all of this out. Thanks _____________________________ 1994 Blazer full size, 5.7ltr 350, 4 inch lift, 33 BFGs (in reply to drperry) Post #: 4

RE: Newby questions....350 to 383 conv. - 4/15/2007 11:49:59 PM    drperry Posts: 3901 Joined: 1/12/2007 From: GP AB CA Status: offline You'll probably have to do some sort of work for the guages to work right... well, the speedo and tach, at least... _____________________________ (in reply to sumner) Post #: 5

RE: Newby questions....350 to 383 conv. - 4/19/2007 10:44:47 AM    aris_unlimited   Posts: 231 Joined: 3/30/2006 Status: offline Depending on how much hp, and tq you are planning on running I would not suggest the 700r4 they are not overly reliable for high hp, tq engines. The TH400 would probably work great although I would personally do a rebuild. As for your gauges, more than likely you are going to have to get some cables and go to work installing them, also check your instrument cluster. You may have to get new gauges overall for it to work. Are you building the 383 yourself? If so there are companies out there (can't remember the name now) that sell the crank, rod, piston etc etc packages so that you can turn your 350 into a 383, add in an engine rebuild and you might be able to save some money over a crate motor. Just remember though if you are building it, you will definitely have to custom tune it. _____________________________ Cars: 2000 Chevy Blazer 4.3L 4WD LT, 2004 Nissan 350z 6speed. (in reply to drperry) Post #: 6

RE: Newby questions....350 to 383 conv. - 4/27/2007 6:51:11 AM    aris_unlimited   Posts: 231 Joined: 3/30/2006 Status: offline Just found the name of the website that has 350-383 kits. www.speedomotive.com enjoy _____________________________ Cars: 2000 Chevy Blazer 4.3L 4WD LT, 2004 Nissan 350z 6speed. (in reply to aris_unlimited) Post #: 7

RE: Newby questions....350 to 383 conv. - 4/27/2007 11:13:07 AM    Lee Posts: 191 Joined: 2/18/2007 From: Hurlburt Field, FL Status: offline I think the 700r4 is rated up to 400hp. I'm not positive though. _____________________________ 2004 Blazer Xtreme Custom exhaust Crappy Dual head unit RF speakers in the front, Alpines in back (in reply to aris_unlimited) Post #: 8

RE: Newby questions....350 to 383 conv. - 4/27/2007 1:17:24 PM    sumner   Posts: 6 Joined: 4/7/2007 Status: offline Just an update.  The engine is being build right now.  It will be here in a couple of weeks.  Chev. 383, 460hp, 10.2-1 compression.  I found a turbo 400 core with the NP 241 case attached, so now Ill have an extra transfercase.  I bought a rebuild kit with all the goodies.  Cadillac drum, Red Eagle racing clutches, Kolene high intensity steels, a Turbo Action shift kit, and a Dacco 8" 3500 stall converter with baloon plates.  Bunch of goodies for a bulletproof 400.  I will keep you all updated on progress. _____________________________ 1994 Blazer full size, 5.7ltr 350, 4 inch lift, 33 BFGs (in reply to Lee) Post #: 9

RE: Newby questions....350 to 383 conv. - 4/30/2007 12:17:20 AM    erauto   Posts: 23 Joined: 4/19/2007 Status: offline the ecm also controlles the fuel pump. any why are you going to a 3 speed over 4 speed transmission. you must have good gas prices in your part of the world. if a 700 is built right it will handle 700 hp. mine is althought I had to go to a manual valve body. And I dont race it at a track. Only a few burn outs and quick accells. The 700r4 also has a way better take off gear than the 400. AND removing tbi? to carb? your going back in time. here is a new saying....THERE IS A REPLACEMENT FOR DISPLACEMENT, ITS CALLED TECHNOLOGY.... _____________________________ 1988 JIMMY 427 little M, vortec blower,methanal injection, holley stealth ram 950. 700r4 manual reverse shift, B M shifter. good transfer case. Tru trac 373. 3 inch lift on 33s. (in reply to sumner) Post #: 10

RE: Newby questions....350 to 383 conv. - 4/30/2007 3:15:11 AM    drperry Posts: 3901 Joined: 1/12/2007 From: GP AB CA Status: offline True, but anything you do technology wise to a small displacement engine, can be done to a large displacement engine with greater results... _____________________________ (in reply to erauto) Post #: 11

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