Possum Boggs

iTrader: (19)

im about to go buy a 5.3 from a 2008 suburban,complete running motor has a small knock,im really buying it for the heads to use on my 98 camaro ss,just wondering if there compatable as the older 5.3's?

bww3588

iTrader: (49)

Should be 706 heads. Could get lucky and they might be 799's which came on aluminum 5.3's. Either way, they will work fine with your porting and larger valves project.

wildcamaro

iTrader: (15)

799 heads will have the same vale size but smaller combustion chamber as well as bigger int/ex ports...the 706 heads have even smaller chambers but they have smaller valves and ports compared to ls1 heads...unless u getting it cheap I wouldn't buy for 706 heads, but if 799 then it's a good deal

canada4g63

Just sell the 5.3 block and use that money to build the heads.

omc8

iTrader: (7)

If its a 2008 it will be 799 or 243s , 706 were used up to 2007 classic body style trucks. It will have the better nbss intake and 87mm tb also. Just curious what code is it LMG, LC9, LY5 or LH6.

Possum Boggs

iTrader: (19)

its the entire motor for 300$,its gna be here friday,would the intake be better than a stock ls1?

Possum Boggs

iTrader: (19)

its 300$ for the entire motor,compete top end and all,its all aluminum block also

wildcamaro

iTrader: (15)

Oh nice score it's an l33 I believe if it's aluminum...so it has the good flat top pistons and floating rods so you should have no problem selling the shortblock since they are desirable...and no you don't want to use that truck intake since they are built for low end torque rather than peak power

omc8

iTrader: (7)

Its not a L33, last year for L33 was 2007 classic body style. If its alum its either LC9 or LH6.

Bilster

iTrader: (21)

I rented a Suburban back in early '08 to travel into Mexico. Couldn't believe the gas mileage and decent power from that 5.3. 22 MPG average....in a Suburban!!!