wheres all the lq9s?
03-01-2012, 03:17 PM
#24
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If I were you I would look at trickflow 225's. Flow better everywhere compared to a stock ls3 setup with more velocity. It is an expensive head but if you are looking at this kind of power you will need it.
03-02-2012, 12:18 AM
#28
trickflow 225's lookin about 2300
cnc ported and polished l92 head with better flow # over stock 1600
stock l92 600-900
thats what ive seen so far, havent got all 3 flow numbers side by side yet.
im planning on pat g spec'd cam also pokin around looking at the FAST 92 or 102 intakes, along with throttle body
does anyone know, im sure you can but... you can use a cable controlled TB on the intake you dont have to have electronic?
cnc ported and polished l92 head with better flow # over stock 1600
stock l92 600-900
thats what ive seen so far, havent got all 3 flow numbers side by side yet.
im planning on pat g spec'd cam also pokin around looking at the FAST 92 or 102 intakes, along with throttle body
does anyone know, im sure you can but... you can use a cable controlled TB on the intake you dont have to have electronic?
03-02-2012, 02:14 AM
#29
Yes. If you use the ls3 top end, you have to get a 4 bolt style cable tb. However, if you do get a fast intake, your stuck with the 102 as they didn't make a 92 mm fast for ls3 heads.
In my build, I'm going with a stock ls3 intake, maybe have it ported for now. I can't afford the fast right now and I'm creeping up on 5 years without my car running and a can't take it anymore.
In my build, I'm going with a stock ls3 intake, maybe have it ported for now. I can't afford the fast right now and I'm creeping up on 5 years without my car running and a can't take it anymore.
03-02-2012, 02:19 AM
#30
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Sorry maybe I missed something, is this a race car? cathedral port vs ls3 heads have been beaten to death.There is way more to a good cylinder head than just flow #s.
03-02-2012, 02:26 AM
#31
A good set of heads with a matching cam is the key. A set of stock ls3 heads with a matching cam will make the 500 he is looking for without shelling out big bucks for a set of cathedral trick flows.
It doesn't matter if it's a race car or not, bottom line is, best bang for the buck is the ls3 top end.
It doesn't matter if it's a race car or not, bottom line is, best bang for the buck is the ls3 top end.
03-02-2012, 02:59 PM
#34
A good set of heads with a matching cam is the key. A set of stock ls3 heads with a matching cam will make the 500 he is looking for without shelling out big bucks for a set of cathedral trick flows.
It doesn't matter if it's a race car or not, bottom line is, best bang for the buck is the ls3 top end.
It doesn't matter if it's a race car or not, bottom line is, best bang for the buck is the ls3 top end.
03-02-2012, 04:25 PM
#35
not a race car......just a nasty street car.
for the record aftermarket heads arent out of my question, i want whats going to perform the best and give me power of what im looking for
so by all means anyone having info or using aftermarket heads let me know what you have and what you think
im shooting for minimum of 500 to the wheels not juuust to squeak to it or fall shy of it
for the record aftermarket heads arent out of my question, i want whats going to perform the best and give me power of what im looking for
so by all means anyone having info or using aftermarket heads let me know what you have and what you think
im shooting for minimum of 500 to the wheels not juuust to squeak to it or fall shy of it
03-02-2012, 06:15 PM
#37
Very impressive...
But I'm not sure if your trying to prove a point or just adding to the info pool...looks like a combination of both. Good find BTW, that is a good thread proving cathedral port heads are still in the same ballpark.
I do however disagree with the direction of that thread. It tends to lead people to believe the l92 style heads are junk...
It is not hard to believe, going from a stock l76 to aftermarket heads, ported aftermarket intake and a cam that It picked up over 100 horse.
However, I am still a firm believer that the same power could have been obtained by milling the l92 heads, adding a matching cam and a good intake.
Not saying the ls3 style heads are near as good as the afr's, but with a cam to take full advantage of the large, lazy intake port of the l92 heads, massive amounts of power can be made.
I think where a lot of people become confused, is that the rectangle port heads are totally different animals than the cathedral port heads. They move air in a totally different manner and at different velocities. That's why I say with a good cam, ground to take advantage of the large amounts of air coming in at a relatively slow speed, can be just as effective as a head that flows less or equal amounts at a higher speed.
Good debate either way, I am having fun with this one. Hard to come across one where people don't get all sandy and pissed off because of 2 different opinions.
But I'm not sure if your trying to prove a point or just adding to the info pool...looks like a combination of both. Good find BTW, that is a good thread proving cathedral port heads are still in the same ballpark.
I do however disagree with the direction of that thread. It tends to lead people to believe the l92 style heads are junk...
It is not hard to believe, going from a stock l76 to aftermarket heads, ported aftermarket intake and a cam that It picked up over 100 horse.
However, I am still a firm believer that the same power could have been obtained by milling the l92 heads, adding a matching cam and a good intake.
Not saying the ls3 style heads are near as good as the afr's, but with a cam to take full advantage of the large, lazy intake port of the l92 heads, massive amounts of power can be made.
I think where a lot of people become confused, is that the rectangle port heads are totally different animals than the cathedral port heads. They move air in a totally different manner and at different velocities. That's why I say with a good cam, ground to take advantage of the large amounts of air coming in at a relatively slow speed, can be just as effective as a head that flows less or equal amounts at a higher speed.
Good debate either way, I am having fun with this one. Hard to come across one where people don't get all sandy and pissed off because of 2 different opinions.
03-02-2012, 07:49 PM
#38
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That is totally true, it would have been a much better comparison if the l92 setup would have been fully optimized before the swap.
Both setups will make great power as long as the rest of the combination is correct. I'm defiantly not saying that the ls3 style (rectangular port) heads are junk.
Before the ls world I came from SBC and BBC where everything is big rectangular runnered 420+ cfm, and guys are making huge power with these setups and they DEFIANTLY work.
For 500 rwhp both combinations could be easily optimized for that goal. In making that goal both have there advantages and disadvantages. With the l92 one advantage clearly being cost.
I just feel that for a street car a cathedral head has better driveability vs a rectangular port combo. What the op needs to decide is what are his real goals with his car (500 rwhp dont mean squat sometimes) and how much money does he have to spend?
Dont worry Bww people will eventually come in here and ruin this informative thread.
Both setups will make great power as long as the rest of the combination is correct. I'm defiantly not saying that the ls3 style (rectangular port) heads are junk.
Before the ls world I came from SBC and BBC where everything is big rectangular runnered 420+ cfm, and guys are making huge power with these setups and they DEFIANTLY work.
For 500 rwhp both combinations could be easily optimized for that goal. In making that goal both have there advantages and disadvantages. With the l92 one advantage clearly being cost.
I just feel that for a street car a cathedral head has better driveability vs a rectangular port combo. What the op needs to decide is what are his real goals with his car (500 rwhp dont mean squat sometimes) and how much money does he have to spend?
Dont worry Bww people will eventually come in here and ruin this informative thread.