Limits of stock LT5 with boost?

[Neat]

I appreciate it guys, thanks! If the head gaskets were resolved, anyone have an idea of what the next failure might be?

I'd like to talk to Grahm if possible, is he a member here? I met him briefly at the C4 gathering a few years ago, but it's unlikely he remembers me.

I've built several turbo / twin turbo cars; mostly LS swapped fox mustangs, the occasional gen 1/2 SBC or Windsor Ford, a handful of 4/6 cylinder import cars, a turbo Regal / Grand National or two, but never an LT5.

Most recently I built a car for myself, an LS swapped, twin turbo, 1993 Mustang. My Mustang has been a pretty great car over the last few years. Full interior, heat and AC, power windows and stuff, 22 MPG, cruises at 2500 RPM or so at freeway speed, is quiet enough inside to easily chat with a passenger or talk on the phone at 75 MPH, and has been 8.77 @ 156 in the 1/4 mile.

Anyway, the twin turbo LT5 is an itch I've always had... I'm contemplating scratching it.

I appreciate the insight, thanks everyone!

[XfireZ51]

At 520chp, I would think the ?juice isn?t worth the squeeze?. 520 is pretty much achievable NA while maintaining the 5.7L displacement.

[A26B]

Originally Posted by Neat

........... If the head gaskets were resolved, anyone have an idea of what the next failure might be?

Any build for more than 5psi boost is going to mean different rods & pistons.

More displacement means a new crankshaft.

You might find it simpler to just say how much money you have to spend and how much horsepower you want. You know the game. The $/hp cost just gets greater once all the low hanging fruit is picked. Just remember, there are twice as many valves and four times as many cams in the LT5.

[secondchance]

Actually four times as cams, Jerry.

[A26B]

Originally Posted by secondchance

Actually four times as cams, Jerry.

Duh! I knew that..... just one of those senior moments :-)

Thanks for the opportunity to correct my post.