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LS1 to LS2 block swap

This is a discussion on LS1 to LS2 block swap within the Internal Engine forums, part of the LSx Technical Help Section category; Originally Posted by Mr. Luos Never heard any good about their motors. I'm doing a 402 ls2 forged block customized ...

  1. #41
    car enthusiast djvaly's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    Never heard any good about their motors.
    I'm doing a 402 ls2 forged block customized by LG Motorsports, they will put in a G5X3 custom made cam. I will run on stock heads for now, how much more rwhp will be freed if I go with average Patriot stage II heads? I know AFR will be the best but price is twice as much as Patriot stage II. so what is your best estimate the additional gain be from P s II heads vs running stock heads? I got full bolts on, full exaust, FastLsx intake etc..

  2. #42
    Slow'er'Ass Mr. Luos's Avatar
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    If you go Patriots...get the Stage III LS6 heads. Those are what I run on mine.

    Stock heads will choke the 402. Probably 60-70 RWHP worth. Heads will be the difference between 425 RWHP and 500 RWHP with a 402.


    No longer on a budget?

  3. #43
    car enthusiast djvaly's Avatar
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    shit I may get them heads after all, how much them Patriots stage III?
    at leas 800 install. and then what 2k parts? man oh man, I out 7k in it, might as well go 10k and get 490-500rwhp..hmmm

  4. #44
    Slow'er'Ass Mr. Luos's Avatar
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    $1300 or something assembled.

    I went through a swap. $7K is just the beginning. Trust me.
    Added power means more broken parts.

    If you are on a budget, I recommend keeping your block.
    If you can drop the money to actually be able to use that 470 RWHP (A4 right?) then go for it.

  5. #45
    car enthusiast djvaly's Avatar
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    shit, I got to built the tranny u right, I may settle with the 410-420 for now. then do a rear bolt, new tires, stall it, and do heads then.. another 7-8k for sure but will be cool to mess with the 480+rwhp.. ur right, I can drive with a cork in it (stock heads) for a year or so, then get at it again,

  6. #46
    Slow'er'Ass Mr. Luos's Avatar
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    Suspension.
    Street tires won't hold that power.
    Tranny won't take it for long. Stall will be needed to utilize the cam well.

    Racing it??
    I think if you are working on a budget, a good solid 347 using your block would be great. Have it built with forged internals, get a good cam in it, maybe get some TSP heads for it, and make 400 RWHP on stock cubes.
    Then...if you want to go crazy with it later, you can....

  7. #47
    car enthusiast djvaly's Avatar
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    I got the suspension bliestein, eibach, and SFCs... yeah need the stall, and the better width tires, DR, 17''..

  8. #48
    Slow'er'Ass Mr. Luos's Avatar
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    I was thinking more like...
    Lower Control Arms with relocation brackets
    Torque Arm

    Ways to get that power to the ground.

  9. #49
    car enthusiast djvaly's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    I was thinking more like...
    Lower Control Arms with relocation brackets
    Torque Arm

    Ways to get that power to the ground.
    yeah, I went through this years budget in one day.. heheh 7k is enough.
    I'll hit the piggy bank next Feb or something. tax money back and a bonus if I get one next year too

  10. #50
    Slow'er'Ass Mr. Luos's Avatar
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    Nice!!
    My return is going to tires on the daily driver....

  11. #51
    car enthusiast djvaly's Avatar
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    hehhe, the fawking install is expensive, 2300 labor to swap block and do all the installs, 4k ls2 forged 402 block, a free g5X3 cam, and 3.73 gear swap another 700 = 7k.. ouch. heheh wife knows about 5k, hehehhe, oh well.
    next year I be at it again... I want to stop at bolts on after heads and stall, then few years down the road put a blower and get 600rwhp,.. dayum. then I stop cause it gets scary fast...

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    car enthusiast djvaly's Avatar
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    thanks for all the advice guys!

  13. #53
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    Man you are dropping a whole lot of $$. Hope that you can afford that.

  14. #54
    car enthusiast djvaly's Avatar
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    got 2.5k from insurance (ls1 hydrolocked small block) got water due to floods on streets, drove into a freaking mini pond no way to see how deep the rain accumulation was..
    2k bonus this year, and 1k back taxes which will be direct deposit in a week or so.
    I just coughed 1.5k from pocket and got me a new spanking forged ls2 block and bigger cam,, not too shabby. I can't wait to put my foot in that torque monster.

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    386HP 373TQ jwindbigler's Avatar
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    not too bad...wish I could have that kind of $$ to drop into it again.

  16. #56
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    if you wanna save some money onheads dj then I would suggest looking into the L92 heads which can be bought for around 800$ fully assemled and are working beautifully with the LS2. Then you can do a somewhat mild cam setup until you feel like going crazy. with that kinda savings over the AFR heads then the rearend could be bought and soon after you could install a shift kit, cooler, billet servo, and stronger accumulater spring to beef up the tranny some for around 250$. just some stuff to think about. Here is a link for info on those heads.

    http://www.gmhightechperformance.com...ine_l92_heads/

  17. #57
    car enthusiast djvaly's Avatar
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    Quote Originally Posted by juiced99ws6 View Post
    if you wanna save some money onheads dj then I would suggest looking into the L92 heads which can be bought for around 800$ fully assemled and are working beautifully with the LS2. Then you can do a somewhat mild cam setup until you feel like going crazy. with that kinda savings over the AFR heads then the rearend could be bought and soon after you could install a shift kit, cooler, billet servo, and stronger accumulater spring to beef up the tranny some for around 250$. just some stuff to think about. Here is a link for info on those heads.

    http://www.gmhightechperformance.com...ine_l92_heads/
    any idea of the gain rwhp/tq from those L92 heads?

  18. #58
    Slower Than a 3rd Gen juiced99ws6's Avatar
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    people are seeing very good gains. umm reports of 425rwhp all the way to 500rwhp with the right cam and manifold and you already have the fast 90/90 so get advise on a good cam for that setup and you would be good to go my freind.

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    texas speed

    Not tellin you what to do man but check out texas speed, im very happy with my 408 its got the best of everything in it all forged, but i upgraded alot of stuff for $4,500. only because im doin this just once.

  20. #60
    car enthusiast djvaly's Avatar
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    Quote Originally Posted by juiced99ws6 View Post
    people are seeing very good gains. umm reports of 425rwhp all the way to 500rwhp with the right cam and manifold and you already have the fast 90/90 so get advise on a good cam for that setup and you would be good to go my freind.
    ok mate, I'll look into it. I may have to stay on stock heads for a few months,
    get the feel of the already 410rwhp power. I have to see if the tranny acts up (A4), get used to that much power, then I'll slap some decent heads on, not sure I wanna do AFR, they are nice/good but way too freaking expensive.
    I know they cost 2500 but they would only give 10-15rwhp more over the other Patriot Stage III etc.. so the extra 1k i can keep not worth the little extra gain. if I get to 470rwhp after all tuned with heads mod on, I think I'd be very good. I just wanna be there with the stock C6 Z06s

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