A hotcam kit for a 1997 WS6 would yield about how much rwhp with all supporting mods and tune? what kinda quartermile times?

 

it depends on your mods already installed, exhaust and headers would increase the benefit of a bigger cam however the flow on the stock LT1 heads is not so good so that would be a choke point along with your intake manifold and stock 48mm throttle body.

 

With all the supporting mods and a good tune, it could be around 340 rwhp with an M6, a little bit less with an A4.

 

I disagree. If I recall correctly, the fuel injected 502 big block that GM released had a twin 48 mm throttle body on it. If it can feed a 502, I feel confident that it will feed a 350 with stock heads, bolt ons and a HOTcam.

 

ya 48 mm tb is plenty for a hotcam kit and compared to other sbc's the lt1 had very good heads.

 

true but they are the reason the LT1 is a torque monster but doesn't rev out like the LS1 does so compared to the heads of the LS1 they don't flow well.

 

anyone have some flow #'s for different heads used through the ages? Would be neat to see the development of the SBC head from early v8 days till the LS7 monster.... just my .02

 

This is completely, and utterly incorrect.

The stock heads are decent heads in their stock, unported form. Ported they outflow most aftermarket heads. And comparing LT1 heads to LS1 heads is like comparing apples to oranges. You would know that if you knew WHY LS1 heads flow like they do..

The stock intake manifold is such an excellent design that no one has even bothered to make a street/strip aftermarket intake manifold (besides a carburated version) for the LT1. There are some aftermarket, fully drag-race only, aftermarket manifolds I believe.

The stock TB flows quite a bit, once you get into H/C territory (430+ FWHP) I'd consider a larger one. But for a HOTCAM, the stocker will do fine.

 

they flow like they do because they are set up to have equal lengths of intake and exhaust ports thats why the middle set of ports aren't right beside one another that way the air/fuel mixture and exhaust travels the same distance into the combustion chamber and the same distance out of the head for each cylinder. Also, the LS1s intake manifold has those runners in it to make sure the air travels the same distance to each cylinder within the manifold as well. Thats WHY the LS1 head flows like it does and i don't see how comparing to sets of cylinder heads is comparing apples and oranges and how am i UTTERLY incorrect when the LS1 heads DO flow better than LT1 heads that was my point.

 

I hate to tell you this, but you're wrong again. The ports in LT1 and other small block chevy's are all equal lengths. The port location has nothing to do with it. If the runners were unequal length then you would have one f***ed up running motor.

The LS1 head flows so well due to a different valve angle in the heads, giving the air charge a better path to the combustion chamber. Regular small block and LT1 heads are 23 degree, while the LS1 is 15 degree (I believe).

 

i certainly don't know everything, or even a little bit in the grand theme of things, but my original statement said the LS1 heads do flow better than the LT1 which i know to be right reguardless of why and if im wrong fine im wrong and i appreciate you saying im wrong as opposed to telling me im UTTERLY incorrect. I use this board to gain knowledge not to have people disrespect me like that.

On the trottle body i didn't know the flow capabilities of the 48mm throttle body

 

No problem, man. This is a great place to learn.