Lq4 Potential Build. 2 cents needed
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Lq4 Potential Build. 2 cents needed Hi fellas. As stated in previous posts i will not be building for another 11 months as i'm stationed over seas but from what research ive done here ive come up with this basic parts list. ( this will be my first motor built ) (and i am not familiar with Lsx)
Goals: 4-500 NA, & 550-600 with spray Into a Rx7 FC or 240sx
(Note: all used parts will be inspected & cleaned the correct way)
Craigslist LQ4
Granny speed shop/Sikky/Hinson Swap kits pending car selection(not picky)
TH400 MVB W/ Transbrake ( cant justify spending $2800 for t56 & another 2000 to build it up)
370 C.U
Engine internals: (looking at TSP for purchases)
Stock Crank
Connecting rods: TSP 6.125 H beam with 2000arp
Pistons- Wiseco 4.03 +12CC Dome ( to increase compression )
Clevite P main bearings
Balancing done by TSP
Wrist pins- standard ( unless they are the ones that come with stock motors)
* Reluctor wheel, i have no clue on whether i need 24x/58x.
*Heads I'm naturally lost*
But as of now ive read 243 heads W/ ls6 Intake is where its at. Subject to change ( also heard milled lq4 heads arent half bad )
Cam: looking at the MS3 or Hot cams ( may be too aggressive? )
headers, intake, exhaust , injectors & pump will be done before this motor is ran but have not gotten far enough to pick the parts.
any advice, improvements, Whines, Bitches, moans & gropes.
Thanks
Goals: 4-500 NA, & 550-600 with spray Into a Rx7 FC or 240sx
(Note: all used parts will be inspected & cleaned the correct way)
Craigslist LQ4
Granny speed shop/Sikky/Hinson Swap kits pending car selection(not picky)
TH400 MVB W/ Transbrake ( cant justify spending $2800 for t56 & another 2000 to build it up)
370 C.U
Engine internals: (looking at TSP for purchases)
Stock Crank
Connecting rods: TSP 6.125 H beam with 2000arp
Pistons- Wiseco 4.03 +12CC Dome ( to increase compression )
Clevite P main bearings
Balancing done by TSP
Wrist pins- standard ( unless they are the ones that come with stock motors)
* Reluctor wheel, i have no clue on whether i need 24x/58x.
*Heads I'm naturally lost*
But as of now ive read 243 heads W/ ls6 Intake is where its at. Subject to change ( also heard milled lq4 heads arent half bad )
Cam: looking at the MS3 or Hot cams
( may be too aggressive? ) headers, intake, exhaust , injectors & pump will be done before this motor is ran but have not gotten far enough to pick the parts.
any advice, improvements, Whines, Bitches, moans & gropes.
Thanks
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my budget is pretty much what ever i can save in a year. which should be around 10,000. I'd Enjoy keeping the heads under a 1000, are there any solid choices that will keep me under 1500 for a set. hard to believe those things cost more than stroker kits -_- what would you suggest/recommend?
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If you already have the 243 heads I would send them to Advance inductions. They have some programs that's under your budget. Everybody go have they own opinion. Next guy likely to say go with a LS3 top end.....
Just remember the better your heads are the smaller the cam you can run and make killer power.
Here is a link to what I'd do personally. Notice they mention 450-500 rwhp and it's within your BUDGET.
http://www.advancedinduction.com/LSX/AiLSx232ccGMLS2Head.php
Just remember the better your heads are the smaller the cam you can run and make killer power.
Here is a link to what I'd do personally. Notice they mention 450-500 rwhp and it's within your BUDGET.
http://www.advancedinduction.com/LSX/AiLSx232ccGMLS2Head.php
What's the plan for this car? I'm guessing an all out track/strip car?
Really depends on what your budget is. 243 heads are the best OEM cathedral heads and can be made to run well if ported. LQ4 heads are basically the same thing, so if you mill them then yes you'd get the same exact performance as unmilled 243s.
That seems like a huge difference...the MS3 is on the higher end of aggressiveness while the hotcam is basically the opposite a very mellow easy cam. You'd best be advised to contact a cam vendor and have them spec you out a cam for your exact setup (once you make a decision on everything else as the cam should be the last thing to get specd).
But as of now ive read 243 heads W/ ls6 Intake is where its at. Subject to change ( also heard milled lq4 heads arent half bad )
Cam: looking at the MS3 or Hot cams ( may be too aggressive? )
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I was going to have a couple vendors reviews the list for approval/improvements. Might not like the answer but my plan for this car is going to end up as a weekend car. One of those sunday "sleeper" monster you don't want to pull up next to.
And if its reliable enough hell ill daily drive the beast... As far as cams go, this will be my first v8, and what would a v8 be without the soundtrack. Which ever one can aid my goal and be nitrous friendly. Coming from the honda scene & the V6 camaro (shamefully the 2013 LFX shitty motor) i dont know much of cam specs or flow ratings of heads... YET.
I sit on my duty post and just research in and out so eventually ill get around to the inns and outs of cams in perspective to long term goals.
And if its reliable enough hell ill daily drive the beast... As far as cams go, this will be my first v8, and what would a v8 be without the soundtrack. Which ever one can aid my goal and be nitrous friendly. Coming from the honda scene & the V6 camaro (shamefully the 2013 LFX shitty motor) i dont know much of cam specs or flow ratings of heads... YET.
I sit on my duty post and just research in and out so eventually ill get around to the inns and outs of cams in perspective to long term goals.
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One question i do actually have when it comes to aftermarket heads is the rev limit safeness. with a forged bottom end minus the crank, and an after market head does that open up potentially higher Redlines 9, 10k ? or is it just not worth it to push it that far and risk destroying everything. ive tried google, maybe looking in the wrong places?
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One question i do actually have when it comes to aftermarket heads is the rev limit safeness. with a forged bottom end minus the crank, and an after market head does that open up potentially higher Redlines 9, 10k ? or is it just not worth it to push it that far and risk destroying everything. ive tried google, maybe looking in the wrong places?
You're going to need some SERIOUS valvetrain to handle 10k. Be prepared to spend 3-5x as much on such a setup vs. one that only revs to 7500.
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No worries just a knowledge question for me incase i ever want to try to push redline. The RB series Skyline motors or FD series rotaries when built high rev, curious if they were similar in the same aspect.. Considering i have yet to feel/drive a car with more than 300Hp to the wheel,
I feel that 450-600 well keep me honest for quite some time, and i also assume the streets of northern Cali wont be packed full of solid contenders so i will have my reign for the most part lol
thanks for answering that question btw
I feel that 450-600 well keep me honest for quite some time, and i also assume the streets of northern Cali wont be packed full of solid contenders so i will have my reign for the most part lol
thanks for answering that question btw
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If you already have the 243 heads I would send them to Advance inductions. They have some programs that's under your budget. Everybody go have they own opinion. Next guy likely to say go with a LS3 top end.....
Just remember the better your heads are the smaller the cam you can run and make killer power.
Here is a link to what I'd do personally. Notice they mention 450-500 rwhp and it's within your BUDGET.
http://www.advancedinduction.com/LSX...cGMLS2Head.php
Just remember the better your heads are the smaller the cam you can run and make killer power.
Here is a link to what I'd do personally. Notice they mention 450-500 rwhp and it's within your BUDGET.
http://www.advancedinduction.com/LSX...cGMLS2Head.php
thanks =]
These V8s can make a big HP number without needing 7500+rpm.
Far as tranny the ONLY thing I would consider a TH400 for is pure dragracing and even then I probably wouldn't use it in a light car.
500fwhp and you will be able to keep it under 6500rpm and for that I wouldn't touch the shortblock, just buy one in decent shape from a junkyard.
What are your thoughts on stall and gear?
Far as tranny the ONLY thing I would consider a TH400 for is pure dragracing and even then I probably wouldn't use it in a light car.
500fwhp and you will be able to keep it under 6500rpm and for that I wouldn't touch the shortblock, just buy one in decent shape from a junkyard.
What are your thoughts on stall and gear?
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as far as the th400 i wouldnt know what to do yet, still have a year left, so a year of research. main hurdle i was worried about so far is pistons / rods. some people say dont go eagle they suck, some say tsp is crappy made in china, some are saying f' the gm crank go dragon slayer..
So baby step, TSP/wiseco. Look deeper into heads see if i can find some extra pocket $$ to go for aftermarket heads.. im in no rush, but i only want to do this once.
hell i'm not even set on a hp figure, what i Want and what i'm content with are far between. 5 to wheels will be alot for me especially in a lighter car.
So baby step, TSP/wiseco. Look deeper into heads see if i can find some extra pocket $$ to go for aftermarket heads.. im in no rush, but i only want to do this once.
hell i'm not even set on a hp figure, what i Want and what i'm content with are far between. 5 to wheels will be alot for me especially in a lighter car.
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I know what you mean about getting around on heads...... Therefore I would call every sponsor on here that port heads and see who can give you your best bang for the buck. Sure it's time consuming but it can pay off at the end of the day.
I wouldn't run a TH400 on any performance vehicle. They are very heavy, have heavy internals, therefor they rob horsepower. You will end up with better hp numbers to the rear wheels with a different trany.
Sticks are fun, but automatics make better, faster and more accurate shifts. Even in Pro Mods, they are still using Lecno transmissions but with torque converters and air shift pods. So a manual trany for strength but the shifting and launch of an automatic.