LS2 402 short block at SDPC!
Originally Posted by MakoLS1
Will LS1 heads work on this? And do ou guys sale the iron block version? If so, is it the same deal but a little cheaper?!
We do offer this 402ci set up in the Iron block. We could sell it to you for about the same price, maybe a little cheaper. The iron set up will not need all the extra parts that I ship with the LS2 set up (front cover, timming set, and valley cover). Keep in mind we are adding about 100lbs to the front of your car if we do that. The iron block has it's ups & downs, as does the LS2 aluminum block, but we will build what suits your needs!
Originally Posted by Perry Kincy
Here is my thinking. We got a 4 inch stroke now. And I ran my 346 with a 3.62 inch stroke to 7000. I will not do that with the longer stroke. Too much piston speed, too much angular force.
So if I want to limit my rpm to 6600 I must have a cam that makes its power down low. And the mega cams won't do that.
90% of what we feel on the street as power is torque. 90% of what we use at the dragstrip is hp. I don't drag race. The beauty of my 383 LT1s is off idle power. The disappointment I had with my higher hp/lower torque LS1 (than the 383 LT1s) was the lack of jump while in a reasonable gear on the street. I will now have that back. How many times are you cruising at 2500 rpm and want to get around someone or hit it? Now figure how many times you are cruising at 4000 rpm and you want to hit it? I am way more in the former and way less of the latter. That was the problem with my H/C car; it was hella slow at 2500 rpm.
And I have been around long enough that I am not at all concerned by the "my d*ck is bigger than your d*ck" discussions over dyno numbers.
So what is good for me is likely not good for all others but it floats my boat.
I am definitely looking forward to putting the car back on the road. Than I got one of my 383s I want to freshen. It never seems to end.
Perry
So if I want to limit my rpm to 6600 I must have a cam that makes its power down low. And the mega cams won't do that.
90% of what we feel on the street as power is torque. 90% of what we use at the dragstrip is hp. I don't drag race. The beauty of my 383 LT1s is off idle power. The disappointment I had with my higher hp/lower torque LS1 (than the 383 LT1s) was the lack of jump while in a reasonable gear on the street. I will now have that back. How many times are you cruising at 2500 rpm and want to get around someone or hit it? Now figure how many times you are cruising at 4000 rpm and you want to hit it? I am way more in the former and way less of the latter. That was the problem with my H/C car; it was hella slow at 2500 rpm.
And I have been around long enough that I am not at all concerned by the "my d*ck is bigger than your d*ck" discussions over dyno numbers.
So what is good for me is likely not good for all others but it floats my boat.
I am definitely looking forward to putting the car back on the road. Than I got one of my 383s I want to freshen. It never seems to end.
Perry
Glad to know that you have your motor & it's going in!! I know it took a little while, but it will be well worth the wait!! If you need anything please feel free to call or email me.
I also was noticing that you are going to want to freshen up your 383. we would be happy to do that for you, and now that you have your 402 you have the perfect shipping crate. I could get you a very good freight rate for the shipping both ways. Let me know if there is anything I or SDPC can do!
Thanks Kris,
The motor looks great! We should have it in by Sat PM and I will drive it for a week to break it in and part throttle tune it. Than next week I will add a new fuel pump (decided to go with 42 lb/hr injectors) and we will dyno it and wot tune it. Boy that is quite a rig for the cam sensor wiring up front.
Perry
PS: it was great to get the car out of the garage finally. It looks good sitting by the lift waiting the new motor.
The motor looks great! We should have it in by Sat PM and I will drive it for a week to break it in and part throttle tune it. Than next week I will add a new fuel pump (decided to go with 42 lb/hr injectors) and we will dyno it and wot tune it. Boy that is quite a rig for the cam sensor wiring up front.
Perry
PS: it was great to get the car out of the garage finally. It looks good sitting by the lift waiting the new motor.
I am a virgin at attachments, but the first I will try is the motor partially dressed from the front to see the LS2 Cam Sensor.
Perry
PS, if this works I will try some tomorrow the the KSers and the headers on.
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Perry
PS, if this works I will try some tomorrow the the KSers and the headers on.
[IMG]http://[/IMG]
Originally Posted by Perry Kincy
Hmm, So much for my ability to follow directions and use a computer.
No Image Perry
No Image Perry
stone4779@yahoo.com
The SDPC LS2 402 is in and running. Working on getting it tuned and ready to smog so I can get the car reregistered than I can get serious about wot tuning.
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
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Originally Posted by Naked AV
You're going to smog a 402 in California? I'm very interested in hearing how this turns out.
Perry
Originally Posted by Perry Kincy
The SDPC LS2 402 is in and running. Working on getting it tuned and ready to smog so I can get the car reregistered than I can get serious about wot tuning.
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Originally Posted by Perry Kincy
The SDPC LS2 402 is in and running. Working on getting it tuned and ready to smog so I can get the car reregistered than I can get serious about wot tuning.
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Originally Posted by 89FormulaLS2
Well, since I am moving to California later this year, I will be very interested in hearing about your encounter with the smog *****.
We use an ALDL I/M test. You simply need to have no codes and no more than 1 emission monitor not completing. I had been driving around all day trying to get down to 1. Finally did and pulled directly into the smog station.
Perry
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Posts: n/a
Originally Posted by Perry Kincy
I handled the Republik of Kalifornia smog station by moving to Las Vegas.
We use an ALDL I/M test. You simply need to have no codes and no more than 1 emission monitor not completing. I had been driving around all day trying to get down to 1. Finally did and pulled directly into the smog station.
Perry
We use an ALDL I/M test. You simply need to have no codes and no more than 1 emission monitor not completing. I had been driving around all day trying to get down to 1. Finally did and pulled directly into the smog station.
Perry
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Joined: Mar 2003
Posts: 1,839
Likes: 0
From: La Porte, TX
Originally Posted by Perry Kincy
The SDPC LS2 402 is in and running. Working on getting it tuned and ready to smog so I can get the car reregistered than I can get serious about wot tuning.
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Just got the idle worked out last nite and was able to run it a little harder.....Seems VERY strong everywhere.
Knock Sensors are working well and seem appropriately sensitive in the block location.
Some install issues that need attending to. Seems that the crossmember got moved over a bit in my install and the steering linkage is contacting the header tube at full lock....that needs attending to.
But overall it has come together surprisingly well. Thanks, Kris.
Perry
Originally Posted by WS6snake-eater
I'm taking it that you got the knock sensors to work? How did you do it, and how is everything working out for you?
Knock sensors appear to be working perfectly. I don't have excessive knock but I have it everywhere I did on the H/C LS1 motor. And the sensor will retard mild knock (0.4 deg retard) as well as the big stuff (7.7 degree retard). The latter seems to occur when the throttle is closed rapidly after a wot run. So it is false knock but the sensors in the valley cover had the same thing happen. This I will tune out by simply limiting retard to 2-4 degrees.
Perry
Perry
Originally Posted by cyclerage
Are these LS1 specific rods or some other design?
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Joined: Jan 2004
Posts: 369
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From: Valencia, CA
can you get some pictures up?
Originally Posted by KJ@SDPC
We were able to use one of the motor mount holes for the knock sensors, because our engine dyno does not need all of them. Of course when you put the motor in the car that will be a different story. Realy the best thing to do is tap the original hole that GM used for the LS2 sensor.
I will try to get some pics up asap!
I will try to get some pics up asap!