LQ4 options
LQ4 options ok so the car has a lq4 ls1 intake/ TB, sanderson headers and a TSP 228r cam, dual walboro pumps, adjustable FPR. It has great low end torque but feels like it just plain falls on it face after third gear... thinking its probably in the 350 rwhp range at the moment? looking for a solid 450RWHP.. so lets discuss the best/economical way to reach 450 RWHP and 500RWHP.
from what i gather l92 or ls3 heads and an ls6 intake should get me to 450rwhp.. will i need a larger TB to get there?
what is the most ecomical way to reach 500rwhp? not quite sure where to start to reach those numbers.
on a side note what ever happened to the weiand intake? did that ever get released and is it any good?
from what i gather l92 or ls3 heads and an ls6 intake should get me to 450rwhp.. will i need a larger TB to get there?
what is the most ecomical way to reach 500rwhp? not quite sure where to start to reach those numbers.
on a side note what ever happened to the weiand intake? did that ever get released and is it any good?
Dont get ls3 heads, im sure two dozen people will say the opposote, but do some real research and you decide on that.
It depends on your budget. For factory heads, some ported and milled ls6 heads and a fast intake would get you there.
It depends on your budget. For factory heads, some ported and milled ls6 heads and a fast intake would get you there.
What do you mean by best/economical? There are so many options and your gonna have tons of people telling you "you should do this". Do your research and choose an option that best fits your needs and budget. Good luck.
I mean I want to hear from different people running different setups in the 450 and 500rwhp range..
Teching In
Joined: Jan 2013
Posts: 40
Likes: 0
From: Glendale
Square or Cathedral Ports I also have a 6.0 lq4 in a 2007 Chevy 2500 truck I plan on pulling and installing in my 72 Buick Skylark, I want to change the stock manifold and install either a Port injection Holley manifold or maybe even a Fast manifold but I do not know if the heads are "square" or cathedral ports.
does anyone Know?
Phil
does anyone Know?
Phil
Joined: Jul 2007
Posts: 1,500
Likes: 177
From: ELSA, South TEXAS (956) 802-7700
as with any build or project, it all comes down to money, your budget, your goals, etc.
ive had both lq4 with 243 cathedral port heads and lq9 with ls3 rectangular port heads and loved both. i prefer the ls3 headed combo i have now but to each their own.
ive had both lq4 with 243 cathedral port heads and lq9 with ls3 rectangular port heads and loved both. i prefer the ls3 headed combo i have now but to each their own.
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Verdad Gallardo So ls3/l92/l76 are all the same thing as far as intake is concerned? and what size injectors are they. I think I have acouple leaky injectors so I'm going to be in the market soon.
For all intensive purposes, yes. They flow the same and fit the same heads.
An l92 (truck intake) will not fit. l76 or ls3 is what you will be looking for.
Tainted, you left out the ly6 (alum. 6.0 with l92 top end).. Not sure what else.
Ok thanks for the education fellas, keep the comments coming. I do have spare set of 317 heads in the garage. Would it be wise to have someone Cnc port them/build them as apposed to going with with l92 heads? If l92 heads are not desirable for the low CP lq4 what is a good option?
Ok thanks for the education fellas, keep the comments coming. I do have spare set of 317 heads in the garage. Would it be wise to have someone Cnc port them/build them as apposed to going with with l92 heads? If l92 heads are not desirable for the low CP lq4 what is a good option?
Also als3 injectors I believe are 39lb
the 243/799 wont work with ls3 intake, you would need an ls6 or FAST. you can easily hit the 450rwhp with cathedral heads and intake and be very happy.
Ok thanks! Would it be smart to go ahead and pickup up the ls6 fuel rail and injectors? Will the ls1 throttle body and fuel rail work with the ls6 intake? If so jut upgrade injectors? Or should I just pick up the entire setup?
Last edited by oscs; Feb 5, 2013 at 09:49 AM.