I just bought a b20 block....a friend of mine is giving me a b18b head with an intake manifold and throttle body. I plan on boosting it as soon as i can piece the rest of it together. Does anyone know a safe amount of boost to run on stock internals. I was thinking like 9 or 10 pounds

 

you can safely run 6 to 8 pounds with mild fuel upgrades if u go any higher u will need to tune it for it to be safe and when i say tune i mean dyno tune

 

yea 6-8 psi will be safe and the b20 sleevs are weak so watch it im gonna boost a b20 myself researching everything before i do but thats my set up for me ek

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b204d &raquo;</TD></TR><TR><TD CLASS="quote">you can safely run 6 to 8 pounds with mild fuel upgrades if u go any higher u will need to tune it for it to be safe and when i say tune i mean dyno tune </TD></TR></TABLE>
a wideband should be sufficient for tuning.