ajm6872

On an lm7 02 silverado 5.3l what twin turbo set up has everyone been successful with? Unfortunately I'll be running the stock rotating assembly.. new pistons old rods. .625/.625 cam with 113lsa. New springs and ls1 rockers with upgraded trunion.i have an hp tuner on the way. But I don't know what size turbos to go with.. the truck will be my daily driver so I don't want to go overkill but I don't want to not have enough to feel like it was a waste.. any info will be appreciated.

FFDP

iTrader: (2)

Twin turbos will be a ton of extra work and parts when you can only run it to 450-500hp because of the weak factory connecting rods.

A single 70mm turbo would be more than enough to do burn outs with. Twins would only require 60-65mm turbo's to make okay power.

ajm6872

So would 1 turbo be enough to run around 7 or 800hp while my foot is in it?

03sierraslt

iTrader: (22)

1 turbo will do way more then you need depending on it’s size.

ajm6872

So the turbo I bought is a 98mm gt45 t4 vband 1.05a/r. What size wastegate and bov should I use with it? I read that it might be better to run 2 smaller wastegates so if I run 2 where do I place them?

03sierraslt

iTrader: (22)

That must be a 98mm compressor exducer. Not sure it will hit your goal, do you have a link to it?

pknowles

iTrader: (1)

An intercooled GT45 should be able to make in the 700's crank hp on a 5.3 depending on your cam and have very nice response. In this power range, I would go single turbo to reduce piping, parts, and cost.

ajm6872

ajm6872

Whats the difference between a regular blow off valve and a super sequential bov???

03sierraslt

iTrader: (22)

What the hell is a super sequential BOV?