There was a seminar at the MCR show in St. Louis by a big GM parts dealer and he noted that only the small block crate engine that was internally balanced was the base 350/290, #12499529 w/perimeter valve cover bolts. All the others with center valve cover bolts, like the 350 HO #12499711, ZZ4, RJ350, Fastburn 385, and HT383, etc. are externally balanced.
Dale McIntosh <http://www.chevellecd.com> ChevelleCD.com ChevelleStuff.com <http://www.chevellestuff.com> <http://www.chevellecd.com> _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Schaefer Sent: Monday, December 03, 2007 12:15 PM To: [EMAIL PROTECTED]; The Chevelle Mailing List Subject: Re: [Chevelle-list] Swappable I don't think that the flex plate & balancer will work. Its been a while, but isn't the 383 the result of using a small block 400 crank in a 350 block? If so, the 400 was externally balanced & used a different balancer & flexplate. But its been many years since I looked at a 383 and the GM 383 might be using new parts that were not available back then. I'd call a vendor, Scoggins Dickey comes to mind www.sdpc2000.com <http://www.sdpc2000.com/> and ask specifically. Or wait for the correct answer from someone else on the list. The distributoe will defineitely work. On Dec 3, 2007 6:01 AM, Karl Groves <[EMAIL PROTECTED]> wrote: Chuck, All of your parts should swap directly. Unless you have a fancy, expensive water pump, you might want to get a new one. Karl Groves AIM/YIM: karlcore Skype: eight.pistons www.WebAccessStrategies.com <http://www.webaccessstrategies.com/> -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Speake Sent: Monday, December 03, 2007 2:23 AM To: [email protected] Cc: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Subject: [Chevelle-list] Swappable I am attempting to decide which engine I am going to swap for my existing 350ci. I am considering the GM Crate 383ci 405hp partly because it comes short some parts. Will the following parts from my 350ci work on the 383ci, MSD distributor, water pump, flex-plate, and harmonic balancer. I already know my headers will fit and I have a good working carb. I can use. I think the 350 and the 383 are the same block with just a different bore and stroke (probably not quite that simple)in which case these parts should be interchangeable. The one I am the most uncertain of is the distributor. If the parts are not interchangeable I will then probably have to go with another 350ci that I can use these parts on. Would be nice to have the extra power of the 383ci though. Currently I am having a upgraded 700R4 transmission installed with a 2400 rpm lock-out converter along with either 3.55 or 3.73 gears (will make that decision in the next couple of days) including having posi. installed. I think this combination should match up well with the 383ci, or if I have to, any of the 350ci crate engines. Thanks in advance for your help. I should have waited until Christmas, but it's too late now. I guess I will just have to look at it as a early Christmas present to myself that the wife doesn't know about. Oh! Oh! Another bad boy. Our cars do seem to get us in trouble once in a while in one way or another don't they? Chuck Speake 1970 Chevelle Malibu Glen Ellyn , Illinois [EMAIL PROTECTED] -- Rick Schaefer 72 TPI El Camino _____ avast! Antivirus <http://www.avast.com> : Outbound message clean. Virus Database (VPS): 071203-0, 12/03/2007 Tested on: 12/3/2007 12:40:18 PM avast! - copyright (c) 1988-2007 ALWIL Software.
