Things they dont tell you about building a stroker..
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
"Experts recommend minimum 42# injectors for a 600hp NA LS1 but preferable 57#s so they are not anywhere near their limit. Can someone tune them? Not 30#SVO."
SVO 30s (which are more like 36s at 58 psi) are fine (I didn't say optimum) for most strokers. In fact, many people run stock 28s (28s at 58 psi) with no problems but this is really pushing the limits.
SVO 30s (which are more like 36s at 58 psi) are fine (I didn't say optimum) for most strokers. In fact, many people run stock 28s (28s at 58 psi) with no problems but this is really pushing the limits.
Thread Starter
TECH Fanatic
Joined: Jan 2002
Posts: 1,205
Likes: 0
From: harrisburg, pa
Holy crap could I add a bunch more to this list..
Like the March balancer that wouldnt go on straight the last 1/2 inch...took hours and hours..
Z06 PCV assy is $70...valve and some hose...get freakin real..
Comp 1.75 rockers require valve cover clearancing..bosses machined and tray removed.
Dont put balancer on less then .150"...(.170-.090" GM range)...any closer and you hit the oil pump with a double roller..
Got 30psi oil pressure with starter priming
Kooks headers fit like a dream
Bottom line...car is already to fire up and no 90mm TB...been waiting for a month...tell me cars dont suck.
I'll have dyno numbers as soon as the final piece comes in.
Like the March balancer that wouldnt go on straight the last 1/2 inch...took hours and hours..
Z06 PCV assy is $70...valve and some hose...get freakin real..
Comp 1.75 rockers require valve cover clearancing..bosses machined and tray removed.
Dont put balancer on less then .150"...(.170-.090" GM range)...any closer and you hit the oil pump with a double roller..
Got 30psi oil pressure with starter priming
Kooks headers fit like a dream
Bottom line...car is already to fire up and no 90mm TB...been waiting for a month...tell me cars dont suck.
I'll have dyno numbers as soon as the final piece comes in.
And to think I wanted to attempt the same thing. No thanks. Not until Uncle Sam lets me retire like Recklass, only 5 more years! Thanks for sharing your learning curve.
Charlie
Charlie
TECH Enthusiast
iTrader: (10)
Joined: Aug 2002
Posts: 720
Likes: 1
From: Arlington, TX Congestion City
Originally Posted by SAM98WS6
$1200 Kooks Stainless headers dont come with gaskets and bolts
TECH Regular
Joined: Dec 2003
Posts: 441
Likes: 0
thanks for the heads up
I am also building a stroker at home with some friends but having a machine shop put together the shortblock and degree the cam.
What was the size of the pistons from Diamond.. dish or dome?
I am trying to keep it simple and after reading some of the hasle people have gone through I am gonna go with Comp's OEM lifters, maybe HS rockers since they are like stock but better, comp timing chain so i wont have to play around with that oil pump BS
I am also building a stroker at home with some friends but having a machine shop put together the shortblock and degree the cam.
What was the size of the pistons from Diamond.. dish or dome?
I am trying to keep it simple and after reading some of the hasle people have gone through I am gonna go with Comp's OEM lifters, maybe HS rockers since they are like stock but better, comp timing chain so i wont have to play around with that oil pump BS
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Thread Starter
TECH Fanatic
Joined: Jan 2002
Posts: 1,205
Likes: 0
From: harrisburg, pa
pistons were 3.905 bore...slight dish with valve relief...good for about 11:1 with that head gasket, stroker and 66cc head. Dont know if they make a dome ls1 piston since it sticks out of the block. Check their website...they only have one 3.905 bore piston.
You will have the oil pump BS with any double roller because you have to space it out.
Make sure the shop holds the crank forward when the torque the mains (per the GM manual). And of course they are competent enough to degree a cam. Good luck..I wasnt going to trust anyone..looking back I would get one from one of the big names..MTI, AP Eng, More, Keith Kraft...only.
You will have the oil pump BS with any double roller because you have to space it out.
Make sure the shop holds the crank forward when the torque the mains (per the GM manual). And of course they are competent enough to degree a cam. Good luck..I wasnt going to trust anyone..looking back I would get one from one of the big names..MTI, AP Eng, More, Keith Kraft...only.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
damn.. sounds like you're havin lots of probs 
Glad I had my stroker assembled by a shop heh (though when I did heads/cam myself last year.. i put a double timing chain on. and new oil pump.. didn't have any issues .....)
Glad I had my stroker assembled by a shop heh (though when I did heads/cam myself last year.. i put a double timing chain on. and new oil pump.. didn't have any issues .....) TECH Regular
Joined: Dec 2003
Posts: 441
Likes: 0
Originally Posted by SAM98WS6
pistons were 3.905 bore...slight dish with valve relief...good for about 11:1 with that head gasket, stroker and 66cc head. Dont know if they make a dome ls1 piston since it sticks out of the block. Check their website...they only have one 3.905 bore piston.
You will have the oil pump BS with any double roller because you have to space it out.
Make sure the shop holds the crank forward when the torque the mains (per the GM manual). And of course they are competent enough to degree a cam. Good luck..I wasnt going to trust anyone..looking back I would get one from one of the big names..MTI, AP Eng, More, Keith Kraft...only.
You will have the oil pump BS with any double roller because you have to space it out.
Make sure the shop holds the crank forward when the torque the mains (per the GM manual). And of course they are competent enough to degree a cam. Good luck..I wasnt going to trust anyone..looking back I would get one from one of the big names..MTI, AP Eng, More, Keith Kraft...only.
I went with custom pistons from Diamond -6cc dish, for 4.040 bore, h-13 tool steal pins which I was told I could throw a 300+ shot on these
with LS6 heads 64cc I think I have about 11.2 compression
Honestly, if you have built motors in the past, all of this wouldn't be a problem. It sounds like you didn't know what you were getting into. I have several motor builds under my belt and not a single one was a problem. Anything you change from stock you will have to modify the rest that is attached to it. I will be doing a couple of stroker motor in alittle while (1 LS1 & 2 Mopar 318-to-390). Actually, if you have a magazine subscription or two, they talk about stroker builds ALOT.
TECH Apprentice
Joined: Apr 2003
Posts: 372
Likes: 0
From: Orlando, FL
Originally Posted by SStroked 410
thanks for the heads up
I am also building a stroker at home with some friends but having a machine shop put together the shortblock and degree the cam.
What was the size of the pistons from Diamond.. dish or dome?
I am trying to keep it simple and after reading some of the hasle people have gone through I am gonna go with Comp's OEM lifters, maybe HS rockers since they are like stock but better, comp timing chain so i wont have to play around with that oil pump BS
I am also building a stroker at home with some friends but having a machine shop put together the shortblock and degree the cam.
What was the size of the pistons from Diamond.. dish or dome?
I am trying to keep it simple and after reading some of the hasle people have gone through I am gonna go with Comp's OEM lifters, maybe HS rockers since they are like stock but better, comp timing chain so i wont have to play around with that oil pump BS
I've been putting my 447 and a 427 LS1 together, one thing we have learned from past experience and something that is hardly discussed about Aluminum blocks is that you want to run the mains a little tighter than .0024. After the block expands (remember it's Aluminum not Iron) your oil pressure may be on the low side, just be fore warned. I run #1 main at .0011 to keep it from orbiting and getting beat up, remember this one gets more load from the timing chain. I've taken many stock LS1 motors apart and #1 main is beat on the most usually. The rest of the mains #2-5 I run at .0015 and the rods at .002 any more and your bleeding pressure off there as well. My buddy set up his bearings close to what you have yours set at and he has to run 15-50 on a new motor to make pressure...where do you go from there after it wears a bit? Just something to watch for on these Aluminum Blocks, if it was an iron block the .0024 would be OK because there is far less expansion. Good luck and hope everything works out for you.
Thread Starter
TECH Fanatic
Joined: Jan 2002
Posts: 1,205
Likes: 0
From: harrisburg, pa
427 LS1 thanks a bunch...thats what I was looking for when I was building it but everyone told me no tighter than .002 and .0025 was fine. DAMN!!! Oh there is alot of work to fix that...
i had .0025~ clearances on my mains last built motor and i had GREAT psi when it was cold... all nice and high, 60 at idle, soon as everything was up to optemp ... i had 16-18 at idle and no more than 42 at WOT...