400hp 4.3l is it possible how?
#21
Yeah the stock 6.0 (LS2) sports around 400 horses. You can build up a 5.3 LS based engine to 400 rather easily. TCI transmissions or better yet, Monster Transmissions, they have beefed up transmissions and transfer cases that can handle 675 horses N/A. Having the fasted Blazer in town isn't cheap, if you want the bragging rights you've got to be willing to spend the money. The stock 4.3 wasn't designed to handle more than 250 without self destruction in the near future, even with upgraded internals you'd be lucky to see 300 ponies at the flexplate/flywheel. And remember you'll lose 20% of that through the rest of the drive train.
#22
if you did get that power out of a N/A 4.3L, i'm almost certain the driveability and gas mileage would be terrible.
#23
The Honda on the other hand, he claims 500hp but came up with it using ricer math..... to my knowledge it has never been dyno'd. but he started with the stock HP and he has this bolt on mod and this other mod and this other mod ect ect ect and he takes what the box says each mod is worth and adds those together ...... Ricer math....... his Honda just can't hang.
Later I will try describe power frequency (if I can wrap my head around it) and why it suggests a V6 (or a 4cyl for that matter) is more abusive to a transmission than a V8
#24
well i have about 4 complete vortec motors sitting in my garage im thinkin of trying to see what i can max out at before it breaks since it would be no loss to me i have plenty of turbos laying around from when i used to street/drag race my 91 talon awd 4g63/ and my 05 neon srt-4 i never put the neon on the dyno but my awd dsm was pullin around 500hp so i know the turbos i have layin around are capable i think they are a few mhi 16g's and 18g turbos im gonna start messin with this idea around spring i been thinkin about this for awhile to see what would fail first and then what i can do to reinforce whatever does fail, i honestly figured the rods would fail first or the tranny, plus i have my own programs for obd 1's and obd 2's to program and moniter everything, plus like i said its all free for me to mess with this idea so i will start up a thread and let u all know what i come up with guys
#25
16g or 18g are too small for a 4.3L, hell, stock syclones came with td06's which are 20g's and they're only good for 430hp.. No way you were getting 500hp from a 16g on a dsm. I have a friend with a evo 9 with a stock 16g with the bigger hot side running 30psi and it only puts down 340whp. the turbo is maxxed.
#26
and how long do you think that would last in a DD?
if the OP can hammer out 400 real-world HP, and make it last in a DD, then i'm all for seeing how he did it.
#27
#28
Wanna pay 30k + for a motor to keep a 4.3. You got to be out of your mind.
BTW Buddy had a sylcone, it didn't last long.
I just watched them ditch a 4.3 for a 5.3 in a newer episode in a daily driven blazer.
Last edited by TheBrettster; 03-07-2011 at 11:26 PM.
#29
^ that was my whole point Brett.
i knew when i broke my 273 rwhp 4.3, that they're not meant to be driven hard on a DD.
hell, i can break 'em when they're stock, for Christ's sake!
i knew when i broke my 273 rwhp 4.3, that they're not meant to be driven hard on a DD.
hell, i can break 'em when they're stock, for Christ's sake!
#30