jason00ss

iTrader: (2)

i know alot of people are running worked over 5.3l heads, but i was wondering if there is any gain with the unmolested 5.3's over unmolested 853/241's? i have a small budget for my heads choice, and trying to decide to port my 853's, go with stock 5.3's, or stock 243's.

Unertl42

iTrader: (63)

you'll bump up the compression with the 5.3L heads so it'll give you a boost in hp

DONAIMIAN

iTrader: (18)

The 5.3's have a smaller intake valve than any of the other heads. I think its a 1.89. That will most likely counter any gains from the boost in compression.

Old SStroker

unmolested adj. "Not interfered with, disturbed, or harmed."

LOL! Perfect description, because too many heads are "molested" in the pursuit of power. Shoot, many people even use computers to molest them.

From your choices, 243s with some milling and the correct valve job would be my choice for BBFTB (Best Bang For The Buck), assuming you can score the unmolested (can we say "virgin") 243s for a reasonable price.

Jon

jason00ss

iTrader: (2)

but when it comes down to it, VIRGIN 243's will give me a bigger bump in hp and torque than VIRGIN 5.3's? i don't think i'll be able to afford to buy heads then have them worked on.

Magic Man

The 5.3's will have to sleep around to get up to help you out.

TooLateVTEC

iTrader: (2)

LOL. So true, + compression is good, but small intake valve = bad.

I say spend the money and do it right the first time.

jason00ss

iTrader: (2)

thanks guys, i'm on the verge of getting some 243's that have some work done. i guess down the road when i get some more bank i can send them off to lose their VIRGINITY