It would have to idle at 1500 rpm I bet. I wonder what the dyno would look like on an otherwise stock 5.3?

 

Shitty. It would be really low and would peak at the point of valve float. It would want to rev to 8k and prolly wouldn't make power until 5500.

The 233/239 113 in a 5.3 was a little on the large side. It would have been OK if it had some good heads, but on a stock 5.3 it took 4500 before it would start waking up good.

 

Oh yea ... you have a HUGE bottle neck in the truck intakes. They stop flowing around 6200 rpm. The airflow rate will flat line. Strange, but it happens. The gms/cyl will begin to fall around 6500-6600. This was evident with a 5.3 and a bigger motor.

 

Thats a juicy cam for a 5.3 lol

 

thats a baby cam...

 

That cam would be pointless and would make no power. As stated the stock truck intakes stop flowing at around 6,000 rpms. With that cam and CI you wouldnt make decent power till 6k. Maybe if you had a single plane carb intake and a 90mm tb and spin it to 8,500 you might get some power. It sounds cool tho.

 

LOL, I thought my cam was big for a 5.3. That cam would be a turd, lol

 

what is the biggest cam there is?

 

You could get a custom ground one that was bigger than that. I think the biggest Ive heard of was a 257/266 on a 110, in a 408.

Sounds sweet. http://videos.streetfire.net/video/f...tte_142775.htm

 

would still have a hell of a lope even with a high idle.