mackdaddy66

I was thinking about going about 5200 or so... should launch god with that I would think

mackdaddy66

I meant good

Dirty_Bird

What if one does the 24x, does that make you a hybrid ltx/lsx

Paul Bell

iTrader: (9)

I consider the cooling system as identifying the LT1. I always felt the reverse cooling design that cooled the heads first to be a great advantage that should've been carried over to the LS series.

ahritchie

iTrader: (1)

Ouch....one would really have to be a hardcore LT1 nut to pay 11K over a 454 LSX block for almost half of that.

I wonder if somebody rigged up an optispark, stock LT1 rotating assembly, put that in the Motown Hybrid LS block with some ported AFR LSX 230 heads is it still an LT1? http://www.hotrod.com/how-to/engine/...own-ls-engine/

mackdaddy66

I would suppose maybe someone that has a high dollar set of heads, intake, and such already on hand for an lt1 and probably staying with the small block because of the weight break for the dot/street car classes maybe? I know from experience that a person can dump a whole lot of money just into the heads...I already had most of the parts on hand for mine.. if I would have had nothing I would have gone lsx too... so if an aluminum lt1 block was available for 4 grand or less I would probably go for it... but 11 grand for what I do is a bit too steep for me

badfbodyz

iTrader: (3)

That's bad ***. I'd take that 427 Motown sbc lt1 or not. Would be cool to find some way to integrate some lt1 parts to it though. Cause I'm not trying to stray away from lt1. I'm all for a big Ci LTX.

Paul Bell

iTrader: (9)

Is anybody here real good with aluminum welding?

Get yourself an aluminum small block and drill, machine, grind and weld up what's needed to make it reverse cooling and accept the LT1 water pump.

(This is how the Donovan block was made)

If you have a block that'll accommodate the LT1's reverse cooling, you'll have a "LT1" motor.

Use the 24x system, not the Opti Spark system. It'll enhance an LT1, not detract from it. Another plus is you can use a standard SBC timing cover and not do the welding/grinding/milling/drilling/taping for the LT1 cover.

Paul Bell

iTrader: (9)

And get a cam with the LS1 firing order the separate the exhaust pulses.

joelster

The LS1 firing order was dictated by the engineers measuring bearing load on the engine, not by exhaust pulses or scavenging. There's a write up about it somewhere. I'll try to find it.


Found it:
http://www.hotrod.com/how-to/engine/...1-lunati-cams/

You have to scroll down a bit

Paul Bell

iTrader: (9)

Yes but the better spaced pulses of the LS firing order is why headers "gain" much less power on a LS engine than when used on a SBC engine.

badfbodyz

iTrader: (3)

^414 ci lt1? What is your bottom end setup? Have yet to see one over 410. Running some good times as well

Rob94hawk

iTrader: (1)

http://www.ellweinengines.com/Donovan/Donovan.htm

Shownomercy

iTrader: (1)

Someone better tell them that according to the internet single planes don't work better than factory breadboxes!!

SS RRR

iTrader: (2)

Pretty sure that link is from forever ago. Any numbers on that build? Almost as phantom-like as the LT1-roots projects. From what I remember he outsourced his machine work.