Hi all!
Well the saga of getting the 425 dual quad Nailhead and SP400 trans into the '65 Skylark continues - slowly ,... I've just had the engine and trans built by a buddy.
I was about to put it in when I found the Postons torque converter I have doesnt fit the 425 flexplate. So I'm digging around for a flexplate at the moment. I have the PE701103 12" 3000 stall converter and I think the stock 425 flexplate must be made for the stock 13" converters.
I'm told a Buick 350 or 455 flexplate should fit. However I've just found a 350 one on ebay and it is only 13.5 inches across whereas mine is 14 inches across.
So the hunt continues. There are 455 racing flexplates out there for about $45 so maybe that is the way to go but they need externally balancing and ideally I'd want one that is already balanced. Like this one
http://cgi.ebay.com/ebaymotors/SFI-P...spagenameZWDVW
and this one
http://cgi.ebay.com/ebaymotors/SFI-F...spagenameZWDVW
They seem way over spec for what I need but are relatively cheap! And look like they have the 2 sets of holes for 2 converter sizes - probably 11" and 10" !!
What is the issue with externally vs internally balanced please? Does it refer to the harmonic balancer on the front of the crank.
Also I need to mount the rear of the trans. I remember from previous posts about 8 years ago that I can reuse the trans cross member from the V6/ Powerglide combo, just move it back a few inches - but exactly how far please??
Also I guess I may as well get a new trans mount since the original is on the old trans I took out (and want to keep). Is this the one I need please?
http://cgi.ebay.com/ebaymotors/NEW-M...=p4506.c0.m245
or this one?
http://cgi.ebay.com/ebaymotors/_Moto...=p4506.c0.m245
Which I think looks more like the one I took off.
cheers! Nick :waving: