Rook

so im getting ahuge cam, and 918 springs and pushrods from thunderracing.

what else should i look into upgrading to rev my little 4.8 to 7200rpms?

Fogle07

iTrader: (5)

rod bolts for sure. i got a huge cam for sale if you dont want to spend that much on a new one. it is a thunder tr227

samdogmx

iTrader: (13)

titanium valve spring retainers are always a good idea above 6500

1slow01Z71

iTrader: (36)

titanium retainers and rob bolts is baout all you can do without tearing down the engine alot and pray it holds together i wouldnt recommend doing it evryday

white1

iTrader: (5)

I just swapped the rodbolts in mine, and dont plan to rev over 65-6700, but Im still a bit gun shy after grenading my 5.3

zippy

a spare 4.8L.

02sierraz71_5.3

iTrader: (2)

what size cam is that you plan on revving to 7k?

you are gonna have valve float all over the place without titanium everything and double springs those 918's wont hold up to a big cam and high rpms. Im with zippy your gonna need a spare motor for when you drop a valve at 6800 rpms. Do you have the stall and gears to match a cam like that?

Mangled03gmc

iTrader: (95)

All of the above.

white1

iTrader: (5)

Check

white1

iTrader: (5)

I think I would like to have an all forged 408 on the stand waiting for the big bang I blew my 5.3 at a lot less than 7200