^yup... and only year with steel fuel tank.

wanna sell that 400?


nvm found it :lol:

dude just plop an LS2 in there. the cost of parts to make the 5.3 like you discribed would be more than to just get a better motor. at least with the LS2 you've got the option down the line to stroke it to a 427 and the LS2s are pretty damn nice to start with. I'm sure others have said this already but I was to lazy to read

fix what you have before you start thinking about exotic motor swaps.

swapping the motor is not going to raise the car's reliability by itself. there are too many variables to say i'm going to drop in a X motor and not have to ever worry about the car. lots of people have been in the situation you're in now and they find out it's much cheaper and easier to fix what you have. besides, it sounds like good money chasing the bad. what will you do with the motor you have now? mothball it?

it sounds like you are looking for an easy way out. swapping a motor in when the motor you have is more than capable of filling your needs seems silly. stop trying to find the easy way out and fix your car. once it's running reliably, then think about swapping motors because then you will most likely have the base of experience to get yourself out of a jam. but if you keep jumping from this idea to the next without ever getting your hands dirty, then you're not really learning anything.

ok, so thats about the same as a bolt on LS1 @ the crank lol. and we all know he would do bolt ons to the 5.3 anyway.

What you should really do is swap in an LT1..... ;)

Same motor mounts as a SBC and much cooler than an LSX....

427 LS1 stroker kit using and LS7 block and call it a day.

And what do you suppose your 400 puts down? I'd guess around that if not more.

From what I know about the 400 it should be putting down about that much HP and definitely more tq than that....

- Justin

The Gen1 SBC would definitely put down gobs more torque.

I'm fixing this motor for sure. I'm almost positive that means rebuilding the heads.. After I fix it. I'm going for a 12 bolt. THEN going for a real ls1 swap. Thanks for the help on this. I figure Ill need a 12 bolt anyway. And I can enjoy it with out that much down time left.

Didn't you just break a rocker stud?

Why though?

Strong running 400 SBC > some puny ass LSX

It's not even an LSX. It's a GEN III small block.

O RLY? Show me a stock headed, stock cammed 400 in any street car running 11's with just bolt ons, 10's w/cam only. Isn't happening.

And bring on the lsx leg humpers....

WF's 400 does not have the stock heads or the stock cam.

I broke a pushrod and a stud.

Could not machining a valve guide cause a broken pushrod?

You snapped the pushrod or bent it?

Bent PR = PTV oops

snapped.

That's what I found about them. I have no clue about what it means, what mine is. my lift is .510

The valve spring retainer hitting the valve stem guide?

That sounds weird.

I'm not a LSx leg-humper but you'd have to work an ancient 400 to even get stock LS1 power.

I know that, what he said made no sense. A "strong" running 400 would barely put down more power than a simple bolt on "puny" LSx.

A 400 doesn't have to work that hard to do it. Modified, sure. But nothing too wild.