402 LSX with custom F2 set-up(Dyno vid & Graph)
05-27-2009, 07:57 PM
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402 LSX with custom F2 set-up(Dyno vid & Graph) My other thread got too long and I don't think people want to search through 60 pages to find the good stuff. If you want to read through the build check out my other thread: https://ls1tech.com/forums/forced-in...rrow-pics.html
The set-up is a 402 lsx block with 8.5 compression, stock 317 heads, big cam eating up all my fuel lol 246/250 .632/.635 on a 112+4 with a F2 mounted by my custom cog set-up. Trans is a th400 with a very loose vig 4000 stall, it flashes to 6300rpm so needless to say, it's way too loose for my set-up and is probably eating a ton of power. It's the first thing to change on my list.
This isn't a finished project but it's a good base line to start working out the bugs. Main things it's going to need are a new converter, 6 bolt heads and possibly a new fuel system because the 80s are maxed at 114%. Might get a smaller crank pulley for less boost and a cam that won't eat so much fuel.
It made 796 @ 26psi. Jim and Larry think going with a better converter, even with less boost, it should make more power. I will probably take thier advice and bring the boost down to around 20psi.
All the guys over at Speed Inc were awesome. Very helpful and even let me work on the car a little in the shop to get the initial bugs worked out. Great bunch of guys over there. Thanks!
Here is the graph:
And the Dyno vid(my camera couldn't handle the sound, it was ear piercing):
The set-up is a 402 lsx block with 8.5 compression, stock 317 heads, big cam eating up all my fuel lol 246/250 .632/.635 on a 112+4 with a F2 mounted by my custom cog set-up. Trans is a th400 with a very loose vig 4000 stall, it flashes to 6300rpm so needless to say, it's way too loose for my set-up and is probably eating a ton of power. It's the first thing to change on my list.
This isn't a finished project but it's a good base line to start working out the bugs. Main things it's going to need are a new converter, 6 bolt heads and possibly a new fuel system because the 80s are maxed at 114%. Might get a smaller crank pulley for less boost and a cam that won't eat so much fuel.
It made 796 @ 26psi. Jim and Larry think going with a better converter, even with less boost, it should make more power. I will probably take thier advice and bring the boost down to around 20psi.
All the guys over at Speed Inc were awesome. Very helpful and even let me work on the car a little in the shop to get the initial bugs worked out. Great bunch of guys over there. Thanks!
Here is the graph:
And the Dyno vid(my camera couldn't handle the sound, it was ear piercing):
05-27-2009, 08:08 PM
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I'd love to but with this loose *** converter I'd be lucky to make it through the 1/8th without running out of gear. With the right converter, I'm pretty sure it's going to be pretty nasty at the track!
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05-27-2009, 08:33 PM
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Im not hating but I would think 26 psi with a f2 would have made more power. But I'm not claiming to be an expert. You may have a beefy drivetrain that is soaking up the power. I say run it at the track and see what she does.
05-27-2009, 09:24 PM
#11
Thats not bad with a vig converter, dont take it the wrong way but thats one of the most mismatched setups I ever seen.
But 800rwhp is 800rwhp and thats nothing to sneeze with a high stall auto at no matter what
But 800rwhp is 800rwhp and thats nothing to sneeze with a high stall auto at no matter what
Last edited by kp; 05-28-2009 at 12:08 AM.
05-28-2009, 10:09 AM
#15
Glad to see you got it running!
To the guys talking about the dyno numbers, they literally don't mean **** here. He is making well over 1000 crank HP with a mismatched combo. Better heads, tighter convertor, and he will be making probably 900-1000 RWHP which is huge on a TH400 setup.
To the guys talking about the dyno numbers, they literally don't mean **** here. He is making well over 1000 crank HP with a mismatched combo. Better heads, tighter convertor, and he will be making probably 900-1000 RWHP which is huge on a TH400 setup.
05-28-2009, 10:40 AM
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Your other build was a big part of why I chose my old D1 set-up, now with this new set-up, I tried to keep that in mind but just make it bigger and stronger.
If you don't mind could you be a little more specific on which parts you mean by mismatched or did what I mention pretty much cover it?
I believe it'll show on the graph. You should try a PY3400, those are made for 1000 hp.
Im not hating but I would think 26 psi with a f2 would have made more power. But I'm not claiming to be an expert. You may have a beefy drivetrain that is soaking up the power. I say run it at the track and see what she does.
Im not hating but I would think 26 psi with a f2 would have made more power. But I'm not claiming to be an expert. You may have a beefy drivetrain that is soaking up the power. I say run it at the track and see what she does.
Yep.
Don't forget guys, this car was built by me and I have no mechanical backround. An oil change was the only thing I new how to do before I started building this car. So I'm just happy everything works and I'm not even dissapointed with the 800rwhp. The custom cog set-up was a success and isn't eating belts which was my main concern. I know it has more in it, I just need to replace the temp parts I put in and hopefully it will be a little closer to the expectations. Even though it didn't make as much as expected, I'm extremely happy that I was able to put together an entire car that works and makes 800rwhp
05-28-2009, 10:44 AM
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Glad to see you got it running!
To the guys talking about the dyno numbers, they literally don't mean **** here. He is making well over 1000 crank HP with a mismatched combo. Better heads, tighter convertor, and he will be making probably 900-1000 RWHP which is huge on a TH400 setup.
To the guys talking about the dyno numbers, they literally don't mean **** here. He is making well over 1000 crank HP with a mismatched combo. Better heads, tighter convertor, and he will be making probably 900-1000 RWHP which is huge on a TH400 setup.
05-28-2009, 12:16 PM
#20
kp, your 100% right, it's very mismached. The only things that were planned were the block and the th400. The rest was put together by finding the best deals I could. Even the block is not 100% what I planned but I found deals putting the internals together so the compression is a little lower than I wanted. Some of the stuff I got is still good but the 317s and converter were never planned to be perminent, just good deals I found to get it up and running.
Your other build was a big part of why I chose my old D1 set-up, now with this new set-up, I tried to keep that in mind but just make it bigger and stronger.
If you don't mind could you be a little more specific on which parts you mean by mismatched or did what I mention pretty much cover it?
Your other build was a big part of why I chose my old D1 set-up, now with this new set-up, I tried to keep that in mind but just make it bigger and stronger.
If you don't mind could you be a little more specific on which parts you mean by mismatched or did what I mention pretty much cover it?
Not that any one part on its own is necessarily bad, its just an odd combination of parts. But I can understand looking for deals and trying to get it together and driving in a reasonable time frame before losing interest, not to mention that F2 looks badass
I'm glad to see you getting some better numbers and I'm sure it will get better, whole point is to have some fun with it. I'm glad to see you are keeping it, you seemed kinda bummed after the first dyno numbers.
