So i am wanting to try some 243 heads cut 40 thou to bump compression and get alil better flow.
i will gain compression and airflow over my stock 862 heads
Intake will gain about 40cfm and exhaust about 15cfm over my stock 862 heads

Is it possible to pickup 3 tenths with this swap?
Anybody swapped and have some results ?

Any feed back will be helpful

 

All i hear is crickets chirpin!!!!
well obviously they do something the new trucks have them

 

i put some on my truck but i did a tr224 and 8.1 injectors at the same time.....now i cant keep a transmission in my truck long enough to get some track times

 

In the next couple of weeks I'm going to have some 799 heads for sale. As soon as my new ones come and I swap them out. One has a bad valve guide, so they will need machined, but your already having them milled.

 

i got some heads i just wanna know if i am wasting time doing the swap

 

I'm sure you would gain some.. If your having them milled and gaining compression you will prolly pick up maybe 20 hp..m isn't the 862 heads weak on the intake side anyways? The 243s will prolly help her breath a lot better and I have been thinking about doin somthing similar too.. But I've just been reading so far

 

If your looking for .3 of a second, why not swap on a FAST LSXRT truck intake? They typically always pick up .3+ and 3MPH+ on the car versions, and the truck verison is their best one!??!?

 

he already has heads and doesnt want to spend 1000+ on a intake

 

You act like a $1000 intake is a big deal??

Tons of people have them on their engines(Camaros/Corvettes/Engine Swaps). Ive had three different ones, all worth every penny. Plus they hold their value well. I would run the truck one if it would fit, but my heater core hoses get in the way, so I have the car version.

 

intake is usually the last thing to buy cuz the intaks flow pretty well for what they are. why would he spend an extra thousand bucks when he can spend a couple hundred and have the heads milled and then 100 bucks for head gaskets and hes good to go? and he gained what he wanted? instead of buying a fast intake right now to gain 15 hp at 7000rpm ? he could buy a 6.0 for what that intake cost and prolly gain 40hp and .5 sencond off his time.