Not to butt in on Mike's deal here, but he may be in bed. <G> SFI once stood for SEMA Foundation, Inc. (SEMA is now not involved but SFI kept the name) and does the standards for racing equipment - bellhousings being one of those pieces. A scatter shield is basically a term for a bellhousing that's not suppose to explode but rather contain a clutch/flywheel explosion. A scatter shield must meet SFI Specs to be accepted by and X-HRA body.
What Mike meant was that due to manufacturing tolerances, the critical alignment of bolting the unit to a block may not be exactly aligned due to the dowel pins in the block not being exact. Most mfgs have offset dowel pins available that you can use to align the bellhousing perpendicular to the block insuring the transmission input shaft is dead-on straight with the crankshaft. Good article at http://www.novak-adapt.com/knowledge/clutches_etc.htm Dale -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, July 05, 2006 11:29 PM To: The Chevelle Mailing List Cc: Michael Pell Subject: Re: [Chevelle-list] The death of my 454 Thanks Mike, Is a scatter shield the same as a SFI bellhousing or is it an additional piece of metal that is welded on top of the bellhousing? Also, What do you mean by "Dialing it in"? I would hope the garage doing the install already knows this, but I am curious and would like to have some background before I ask them. Thanks, Steve ---- Michael Pell <[EMAIL PROTECTED]> wrote: > Absolutely yes, buy a scattershield. Your feet are far more expensive > than a scattershield. I've seen pics of cars pretty much torn in 1/2 > from an exploding flywheel and/or clutch. Not good, and definately not > worth the risk. > > Either a Lakewood or a McLeod. In either case, you need to dial it in > to ensure proper alignment. The McLeod's tend be a bit better on > alignment right out of the box. > And either will work with a GM TREMEC TKO-600. It's designed to be a > direct bolt in replacement for a Muncie (utilizing a 26 spline clutch > disc). Here's some swap details if you want/need more info: > http://www.5speedtransmissions.com/3550_68-72abody.html > > Mike >
