Mrgoodwrench3

As stated before the newer 5.3 2007+ has larger intake, throttle body, no air injection and no EGR.

Mrgoodwrench3

As stated before the newer 5.3 2007+ has larger intake, throttle body, no air injection and no EGR.

skolman91

iTrader: (28)

They have different intake/heads= i believe more comp. also egr and air hasnt been on them since around 01or02, sometime around there..

iamkeniff

iTrader: (16)

243/799 heads
flat top pistons so in turn higher compression
90mm intake but chocked down by a stock 87mm

is that through a stock air tube or a CAI?
stock stall?
what LSA on that 224/230? i figure that cam would be too big for the lil 5.3 considering i see people running 220 an smaller.

norris_83

iTrader: (4)

it's through a CAI and stock stall... LSA is a 114... I love how the Torque doesn't drop under 300 till it redlines

LS1FREEK

iTrader: (1)

The new 5.3's have flat top pistons but they also went from 61cc heads (most 99-06) to 64cc on the new (07 up) 243/799 heads. So in all reality, they did not gain any compression.

LS1FREEK

iTrader: (1)

Dam I just bought me a similar cam, I'm gunna get headers and intake too, then i'll try dyno'n it too and we'll see the difference in the new 5.3's and the old ones.

2007chevy5.3l

iTrader: (21)

Nice gains! I need a cam badddd

Bo185

The 2010 5.3L have VVT! Nice to see how VVT would help the numbers!

03 True Fire

iTrader: (1)

very nice gains!