BADSZ28

iTrader: (39)

Just want to clarify. for example, If an LT1 block has SB2.2 heads is it still an LTX?

Tony Shepherd

iTrader: (4)

You will get a bunch of opinions on that.

Mojave

iTrader: (4)

I would say reverse cooling. The LT1 block is different than an SBC block to accommodate the reverse cooling setup.

Speed Density

iTrader: (38)

Sorta. But not really.

As said above you are going to get a lot of mixed opinions on this.

My take on this is that it has to be an OEM or Aftermarket peice that was made for the LT1 specific, to be an LT1.

94'BLKBRD

iTrader: (76)

The block and reverse cooling heads,oh yeah and that famous opti.

buffman

iTrader: (9)

I know someone who custom made an aluminum LTX block out of a donovan 400 SBC block. It uses the opti, has reverse cooling, etc. I consider it an LTX

Matt

sweet-94z28

iTrader: (30)

Reverse cooling for sure. Opti is famous too.

BizZzatch350

iTrader: (33)

Block, thats about it really, do any thing you want to it, so long as the block is LT1 based its an LTX motor.

ToxicFormula

Yea I agree. Definitely gotta have the reverse cooling. but the opti isn't a must I know of quite a few who are running carb style intakes and are running a normal crab type distributor.

Checkmate007

I asked this question somewhere else and they told me that to have a generation two LT engine you must have a 10125327 casting number on the block.

Is that true?

BADSZ28

iTrader: (39)

Hmmm... Just saw Biz's sig and wonderring what the rules are for the LTX shootout when it comes to the motor. That would be enough to clear this up for me.

slick1851

SBC heads= not really a LT1 anymore

BADSZ28

iTrader: (39)

That is my thought exactly.

RBE17

iTrader: (18)

Even though they've been converted to reverse cooled? I'm not sure why you wouldn't still consider it LT1.

FASTFATBOY

iTrader: (23)

Sooooo, just what do you think a factory LT1 head is??? It is a reverse cooled L98 head.

WHat do you think an AFR, Trick FLow, Dart and Edleblock heads that you buy for an LT1 are? A reverse cooled Gen 1 head....there are no other differences.

So if some company made an over the counter SB2 head ready to bolt on, in your eyes it is still an LT1 right? But if someone had it done on their own...it is no longer an LT1...I can see the logic in that



David

buffman

iTrader: (9)

^^ Just a reversed cooled l98 head? Hardly..

FASTFATBOY

iTrader: (23)

Elaborate please.


I was told by one of my head porters that the ports were mirror images of each other in stock form.

David

buffman

iTrader: (9)

compared to the L98 head the LT1 head had revised port angles and higher port ceilings CC shape is different also

nighthawk15

IMO if it has reverse cooling its an LT1. It may not sound like that big of a dif, but it is, and its also what really sets an LT1 apart from an SBC. Without it the LT1 would not be capable of the high compression #s that it can make on pump gas.

Sam Pace

That is an LT1. But should be called the LS1 killer.
Would this motor having Nascar heads, would it be good on right hand turns?