i sold my denalli and got new 5.3---
#15
#16
THe AFR's are impressive to say the least but unless you plan on FI then they will cost power by lowering the compression ratio with the larger combustion chambers.
Last edited by trever1t; Apr 30, 2007 at 10:24 PM.
#18
nightrunner thanks 4 the info man ok what do u think of dart heads are they compared to afr heads or still afr is better ???
no rice ok my english is bad so??? im in cars performance forum not grammer forum !!! but im doing my best , i dont think its a problem with the other guys to have diff. international ppl here!!!
random why not transulate its my plessure man .
badmofo thanks for the wbsite i did visit it but i think they only port heads i need a full cylinder head with the best valves and ect... to install in 1 step .
trever1t ur totally right with compression ratio i need a chamber #s that will high my compression cuz im not using turbo and neither supercharge . so what chamber # u suggest to go for ???
chevymadness thanks 4 passin bro
thanks all for passin and repleying . im really getting new ideas and infos from u guys .
no rice ok my english is bad so??? im in cars performance forum not grammer forum !!! but im doing my best , i dont think its a problem with the other guys to have diff. international ppl here!!!
random why not transulate its my plessure man .
badmofo thanks for the wbsite i did visit it but i think they only port heads i need a full cylinder head with the best valves and ect... to install in 1 step .
trever1t ur totally right with compression ratio i need a chamber #s that will high my compression cuz im not using turbo and neither supercharge . so what chamber # u suggest to go for ???
chevymadness thanks 4 passin bro
thanks all for passin and repleying . im really getting new ideas and infos from u guys .
#19
Sorry man, but you have a 4.8 unless someone has swaped in a 5.3. The 8th digit in the VIN is V which is a 4.8 LR4 engine. Also, the only engines that come from the factory with a 5 speed is the 4.3 V6 and the 4.8 V8.
Since money isn't much of an issue i'd get a LQ9 or LQ4 6.0L and do the head and cam swap on it before you swap them out. Preferably look for a 2001+ 6.0 to keep from having issues with the longer tail on the cranks on the 1999-2000 models.
Since money isn't much of an issue i'd get a LQ9 or LQ4 6.0L and do the head and cam swap on it before you swap them out. Preferably look for a 2001+ 6.0 to keep from having issues with the longer tail on the cranks on the 1999-2000 models.


