Lookin for some engine build help
another option is to get some 243 heads and instead of porting them just get a nice valve job and bowl blend and a little milling.. think i got a quote for (300-400) ish for a very reputable shop to do that...
And get a custom cam like I did which was a 227/230 .614/.609 111+2 lsa which is a healthy sized cam for the street..
I never got it running as I went a diff direction, but that cam and stock 243 heads on somebody's car on here made 410hp/390tq
and with the heads worked over a little (valve job/bowl blend/milling for CR) you realistically could be in the 425-430 range depending on your tuner.. and with the above you won't break the bank like you will with aftermarket.. and Trickflows are great, I had the 215 trickflow heads, but now your talking about $2,000+ heads which might only make 15-20 HP over the above said combo.
But then you get to take that added savings and put it towards a rear end a built tranny or wherever else you need it.
And get a custom cam like I did which was a 227/230 .614/.609 111+2 lsa which is a healthy sized cam for the street..
I never got it running as I went a diff direction, but that cam and stock 243 heads on somebody's car on here made 410hp/390tq
and with the heads worked over a little (valve job/bowl blend/milling for CR) you realistically could be in the 425-430 range depending on your tuner.. and with the above you won't break the bank like you will with aftermarket.. and Trickflows are great, I had the 215 trickflow heads, but now your talking about $2,000+ heads which might only make 15-20 HP over the above said combo.
But then you get to take that added savings and put it towards a rear end a built tranny or wherever else you need it.
well it's all about $$$$, that's with everything...
there stg1, stg 2.5 ls6 heads (243 casting) are diff in price because the 2.5 has larger valves installed and even bigger valves for the stg 3..
the 5.3 heads are truck heads which work great as well, there is a big debate on the ported 5.3 heads vs ported ls6 heads... form you own opinion by searching and reading and that's my advice on that..
just give them a call, they always take the time to sit down and talk to you and ask away, tell them your goals and setup..
there stg1, stg 2.5 ls6 heads (243 casting) are diff in price because the 2.5 has larger valves installed and even bigger valves for the stg 3..
the 5.3 heads are truck heads which work great as well, there is a big debate on the ported 5.3 heads vs ported ls6 heads... form you own opinion by searching and reading and that's my advice on that..
just give them a call, they always take the time to sit down and talk to you and ask away, tell them your goals and setup..
IMHO since you've never had a H/C ls1 with the 102 you'll never know what your missing, In actual real life you could be missing 15-20 hp from it, but you get to save 1,200+ $$
Don't get me wrong I'm not trying to lure you away of buying the fast 102 or anything else you have mentioned, I've just been in your shoes and you have to look at your budget and realistic goals.
sure 450 hp is nice, but in reality it will take the Fast 102, 1 7/8 headers, aftermarket heads with a healthy cam to really max out the NA Ls1 engine..
just food for thought.
Don't get me wrong I'm not trying to lure you away of buying the fast 102 or anything else you have mentioned, I've just been in your shoes and you have to look at your budget and realistic goals.
sure 450 hp is nice, but in reality it will take the Fast 102, 1 7/8 headers, aftermarket heads with a healthy cam to really max out the NA Ls1 engine..
just food for thought.
Thread Starter
Registered User
Joined: Feb 2012
Posts: 40
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From: Lima,OH
see my thinking is i already am at 351 at the wheels and thats with just headders and i'm not sure what ones can't tell just tried looking to figure that out but can't tell. And a cam. Not sure of cam which is what also sucks. I don't mind dumping the money into it just not wastefully is what i'm getting at i guess. I just don't want to go with the fast 102 and spend the 1200 plus if i'm going to be disappointed by it.
well you won't be dissapointed with the fast 102 itself, it performs great and makes power especially if you have H/C and long tube headers.. But If you can live with 415+ HP then you can put a down payment on a rear end with the $1,500. My opinion though.
Your not wating $$ anyway, you could buy it and run it for a couple months and if you don't like it put it up for sale on here and you could easily get $1,200+ for it.
Your not wating $$ anyway, you could buy it and run it for a couple months and if you don't like it put it up for sale on here and you could easily get $1,200+ for it.
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easy.......
have Advanced Induction port your stock heads....
http://advancedinduction.com/LSX/AiLSxHCRGMLS1Head.php
run one of their HR cam's with it.....email and tell them u want 450rwhp and phil will spec you a cam to do it.......its more than possible to make that power........prob be looking in the 234/242 .631/.631 112lsa cam range....
im making 422rwhp with a AI 224/236 grind on a very mild lobe 112+2 LSA....idles at 800rpm i drive it daily.....its otherwise a stock LS2 with an old unported FAST90 intake and stock tb......
as for the intake you cant beat the FAST but a well ported LS6 should be able to net you your results....
have Advanced Induction port your stock heads....
http://advancedinduction.com/LSX/AiLSxHCRGMLS1Head.php
run one of their HR cam's with it.....email and tell them u want 450rwhp and phil will spec you a cam to do it.......its more than possible to make that power........prob be looking in the 234/242 .631/.631 112lsa cam range....
im making 422rwhp with a AI 224/236 grind on a very mild lobe 112+2 LSA....idles at 800rpm i drive it daily.....its otherwise a stock LS2 with an old unported FAST90 intake and stock tb......
as for the intake you cant beat the FAST but a well ported LS6 should be able to net you your results....
Thread Starter
Registered User
Joined: Feb 2012
Posts: 40
Likes: 0
From: Lima,OH
After getting off the phone with Texas Speed he suggested the Precision stage 2.5 ls6 heads and cam package which runs 1979.99
the precision 3800 stall which runs 799.99
an ls6 intake 599.99
which will put me around 3400 in parts. not counting gaskets yet. Or porting of the ls6 intake. I'll have to look into that option that you just mentioned with advanced induction..
the precision 3800 stall which runs 799.99
an ls6 intake 599.99
which will put me around 3400 in parts. not counting gaskets yet. Or porting of the ls6 intake. I'll have to look into that option that you just mentioned with advanced induction..
Thread Starter
Registered User
Joined: Feb 2012
Posts: 40
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From: Lima,OH
I sent advanced induction an email and they literally responded within minutes of just a link to their other stuff on their website... Hmmm lol was looking for an actual response back more so than that.
first thing is dont spend 600 on a ls6 intake, get one used in the classifieds for 300 (you can find them all the time)
theres no proof in porting the ls6 intake to make any gains, thats why you dont see alot of them being ported.
and that cam ^^ above is big, it will require some hefty springs like the PRC .675 springs.
theres no proof in porting the ls6 intake to make any gains, thats why you dont see alot of them being ported.
and that cam ^^ above is big, it will require some hefty springs like the PRC .675 springs.
^ impossible for you to accuratly say that......you do not know the design of the lobe nor the agressivness of the lobe (ie. acceleration/speed/jerk)....so its impossible for you to say that espically not knowing the valve side mass of the valvetrain being used........the cam will require more than the standard style beehive but it is far from requiring "hefty" springs......
Thread Starter
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Joined: Feb 2012
Posts: 40
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From: Lima,OH
They can point me in the right direction for springs or even have them on the heads at their shop correct? Im not opposed to using different springs if thats what it takes. Just want them done right is all i'm looking at. I like big cams lol i had a 95 z28 i had a big cam in it loved the way it rumbled lol.
They can point me in the right direction for springs or even have them on the heads at their shop correct? Im not opposed to using different springs if thats what it takes. Just want them done right is all i'm looking at. I like big cams lol i had a 95 z28 i had a big cam in it loved the way it rumbled lol.
