The L33 in that ad is claimed by Chevy to put out 310hp and 335lb/ft as standard.mgbv8 wrote:
What will that ally LS engine put out as standard?
What can it be tweaked to on stock internals ?
Can you chuck all the gubbins off it and fit a hoofing great Carb and Blower?
The engine is basically the "truck" version of the LS block and is pretty much the same as the Gen III LS1/LS6, and uses the same style "cathedral port" heads, although the L33 799 heads are closer to LS6 heads than LS1. You can therefore use most mods from the LS1/6 family on this engine without issue, so you can fit "off the shelf" aftermarket cams, headers, etc.
Also, some parts from the Gen IV series, such as LS3/7/9, can be used, albeit often with some extra work required (for example, the cam sensor wheel is at the back on LS1and LS6 engines, and at the front on later versions, so you need to swap the front timing cover for a later unit if you want to use a cam sensor).
I have an LS6 intake for mine, which is said to release an extra 20hp or so (the L33 stock intake is tuned for low down torque but runs out of breath at higher revs) and I will raise the rev limit to ~6500 or so (apparently this is about the limit on stock valve springs, but people are spinning the stock bottom end to over 7k with suitable top ends). I'll also use non standard headers although as it will be emptying almost straight into side pipes via cats I'll probably have to use "shorty" headers, which won't give me as much as long headers would (I have to meet IVA sound and emissions levels... although once it has passed IVA...).
I'm not aiming for big power on mine (at the minute) but I'm expecting somewhere just south of around 350hp-ish. The guy I bought it off uses them on his custom 60's F1 cars and reckons he gets 350 out of them easily, but he uses a custom ITB intake and exhaust setup. Once I've had it for a while I'll look at a better cam and maybe an aftermarket intake/TB setup... or maybe a blower kit...
And you can certainly slap a carb setup on it, Retro LS. And people have put a roots type bower setup on them too. Admittedly that