well i got a lb9 5.0 tpi motor in my house and as we all know our lo3 heads are very bad flowing heads right?so i was wondering if the lb9 heads are better so that i cloud send those to get the vavle seals change, port and polish and clean them complety

 

YES, i think i have a couple of boat anchors laying around that work better than the the lo3 heads.

 

I have an LO3 with a dual snorkel setup and a Borla cat-back. If I add the LB9 heads, headers, and an LT1 cam do you think I can get to 220hp? And will the stock chip be worthless by then?

Bill

 

are you talking 220 at the crank , or are you trying ot put 220 down to the tires?

with those mods, 220 at the crank is doable, to get 220 to the wheels, you migh tbe able to , with the right tuning done to it.

 

Well if I have 220hp at the crank, what are we talking at the wheels. And if the LO3 is rated at 170hp is that at the crank or at the wheels.

 

170 at the crank

 

My poor car is more pathetic than I thought!!!!!!!

 

well so the lb9 head are better right well will they bolt on to my tbi manifold or is it diffrent ?

 

They will bolt on.

 

if your going to the trouble of a head swap , do youself a favor. get a new cam and timing chain, and install a 4bbl manifold and adaptor.

 

okay that a really good idea but my ? was if they are better then the lo3 heads?

 

Yes they are a lot better. Port them a little and they will be leaps and bounds better than your lo3 heads. Not as good as say vortecs, or WP SR Torquer 305's but should be a great upgrade.

 

Can you give a rough estamate of power gained on a L03, if you add a hotter cam and LB9 heads? Whats the value of LB9 heads, so I don't get jiped on the prize. Finally do L98 heads have to big of combustion chamber to use on a 305 and would lower compression to much?

 

well i say we will gain like 10 hp with the lb9 heads maybe me that im gonna port and polish them i say 15 to the wheels

 

getting 220hp at the rear wheels means around 290-300hp, which would take a lot more than a set of stock 305 heads. Just to mention it so nobody gets the wrong idea.

Ty

 

i thought l03s got 170 at the wheels i think you ment 190 at the crank..

ported heads out of a lb9, new cam, and say edlebrock intake with tbi adapter and you are looking at a nice combo that will add alot of hp and If you had the right gears and posi you have a faster car then a 305 tpi auto from what i've expierenced

 

horsepower is rated at the fly

 

well just putting headers and exhaust and chip u cloud stay with a tpi camaro,now doing the head the cam and manifold with the rest of mods i should run a 14.5 right?