Prototype007

iTrader: (2)

I am not having any luck whatsoever trying to search and find out the difference between the rotating assemblies of an older 1 piece rotating assembly and one for LT1?

What is the difference?

Can we use whole rotating assembly's from older SBC in our LT1 blocks, Like a 383 or 355?

LT1_Fireman

iTrader: (12)

As long as its a one piece rear main I think the answer is yes.

Mojave

iTrader: (4)

LT1 bottom end is exactly the same as a 1 piece rear main seal SBC. So that means any 1 pc RMS SBC part will fit an LT1: crank, rods, pistons, oil pump, etc, etc.

Prototype007

iTrader: (2)

Well I mean I got to reading the specs like rod length and actual crank throw and it all measures out to be the same. Only thing I have found different is LT1 has shorter skirt on the piston than an older SBC.

Thought rod and wrist pin location may be different between the 2 generations.

Anyone else have any knowledge on this because I'd really hate to buy a kit and then not be able to use it.

Prototype007

iTrader: (2)

Bump for some others input.

Formula350

iTrader: (3)

heh How many more people need to tell you they're the same?

I'll up the count to 3, for ya.

Prototype007

iTrader: (2)

As many as possible. Surely there has to be some difference or else a lot of people would be doing this because older SBC kits are cheap for forged parts.

daniel6718

iTrader: (36)

id assume so all the other internal parts are the same...only thing differant on a lt1 is the cooling passages..afr heads are actually modified sbc ones with cooling passages modified to work on lt1

Prototype007

iTrader: (2)

Yeah I mean the only other difference I have found is the reverse coolant passages, but I mean something can't be right if you were to take a rotating assembly from a small block and place in our LT Blocks, or else it would be done by people all the time.

Mojave

iTrader: (4)

It IS done by people all the time. The 383 LT4 I'm building has an SBC rotating assembly.

Let me be perfectly clear: IT IS THE SAME. BUY AN SBC ROTATING ASSEMBLY. IT WILL WORK. I PROMISE.

Formula350

iTrader: (3)

Yea, people do it a bunch, sites just list as "LT1 Stroker" to get a few more bucks out of you.

caldercay

For a simple example, download and read through the Eagle catalog:
http://www.eaglerod.com/2008%20Eagle%20catalog.pdf

And search where, in the catalog, you see specific kits/parts for the LT1; if
you find LT1-specific parts, please point to it. (Yes, there are a couple of
exceptions mentioned, such as, "not for LT1").

Prototype007

iTrader: (2)

LET ME BE PERFECTLY CLEAR!!!!!!!

Thanks for the help guys lol! I'll dance at ya'lls weddings.