LS1ROPER

iTrader: (21)

TSP is in the works of building me a 408 shortblock,also had a set of 243 LS6 heads that they working to their stage 2.5. Question is what bolt-ons needed for the best end result such as 90/90. My existing modes are in my sign. Would like the input to make this a do it right first time build. Oh yea this is a N/a build.

iamsickofitall

iTrader: (18)

90/90 setup is just about a must, if your headers are 1 3/4, i'd step it up to 1 7/8

TheBlurLS1

iTrader: (8)

Looks like you are all set besides the FAST 90/90. You'll need to upgrade the fuel pump and get new injectors if you haven't addressed that problem. An underdrive pulley would help out a little bit too.

LS1ROPER

iTrader: (21)

yes headers are the 1 7/8.yes looking at racetronic pnp fuel set up.

JL ws-6

iTrader: (50)

racetronix kit is nice, Id take that route. 42 lb injectors are a must, pulley should be added too while you're at it, and the fast 90/90 also is a must.

LS1ROPER

iTrader: (21)

have the slp underdrive pulley

Mr. Luos

iTrader: (9)

Looks good.

Mine is a 402...TSP.
Pulley, Fast 90/90, Racetronix, 42# injectors, Kooks 1 7/8", solid belt tensioner

dame

iTrader: (3)

my 408 is being topped of with a ported 90/90 setup from TEA, kooks 1 7/8's,and a dual intank setup from racetronix (with the hobbs switch)

ls1408cp

iTrader: (37)

you can get the 1 7/8 stepped to 2inch

TheBlurLS1

iTrader: (8)

Indian name for those = Hung Like Bull.