i have 706 casting heads on my 5.3. would it be better to get them worked or buy a set of 243s and mill them?

 

get the 706's worked. i wasn't impressed with my milled 243's.

 

Speak more on this. Why werent you impressed? I was thinking of slapping on a pare of stock 243s onto my LQ9 to bring compression up to 11:1

 

i know tsp sells heads..do they do the work themselves? or are they macined. would it be better to get the stage 2 or 2.5 5.3 heads whatever they are from tsp?

 

truckshop....does your underdrive pulley work well...can u tell from the seat of your pants.

 

243s FTW. If it were between 862s and 706s the 706s would win. They'll (243s) breathe better forsure but Im not sure if they'll bump ur compression ratio anything significant. I dont remember.
This was brought to my attention under my post when searching for heads for my 6.0. Look about the 4th and 5th post.
https://www.performancetrucks.net/fo...&highlight=862

 

i installed some 243's milled .040 with a tr220 on my 5.3 and i guess i was expecting too much. my setup now is a tr224 cam only 6.0. lets just say it was a day and night difference. i replied based on the question in the first post. i would choose worked 706 heads vs milled 243's. the worked 706's would flow better and probably have a little better velocity for the 5.3.


it makes a pretty good difference in throttle response. you will def notice a difference.

 

they do the work themselves. you can send them your heads and save a few bucks also.

 

yea i would just take them to em...im only 3 hrs away... what would i tall them 3 angle valve job...?

 

depends on what you are looking to spend. ask them what they would recommend for your setup.