CNC Head Dyno Test! + Diagnosing noises. VZ SS
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- čas přidán 28. 08. 2024
- We diagnose some very strange sounds on this VZ 6L SS, then we do some back to back testing on some CNC Rectangle Port Heads!
CNC Port from Tremaniac Racing / NXTGen Engineering.
00:04 - Diagnosing/fixing strange noise
09:30 - CNC Head Dyno Testing
#LStheWorld #OnSongPerformace #CNC
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Always great to find the problem and get out fixed. Hope it's all solved now.
Awesome video as always lads
Have you tried Ferrarri Red on those nails ? The troubleshooting videos are great. It is a shame you guys are not in NSW. My LS3 is a bit tired.
I always enjoy your comparison videos.
I am surprised by the modest hp gain from CNC porting these rectangular heads. Is it a different story with 241 cathedral heads?
On a related note, given the amount of experience you have with the 6L platform and the variety of combos tested to date, perhaps you could prepare a summary video of where the biggest and most cost effective gains are across all the commonly available naturally aspirated modification combinations.
For example, 1286 vs 1287 vs 1288 and larger cams, factory compression ratio vs high comp pistons, 1-3/4” primaries vs 1-7/8” primaries, 2.5” dual vs 3” dual exhausts, manual vs auto, factory convertor vs hi stall, recommended injector sizing, etc. Obviously, some combos are incompatible and some behave the way you’d expect. I’m keen to see a video like that!
@@wot3675 that would be a good vid for sure! Im hoping by next year I can be a bit less busy with OnSong and do a bit more of that kind of thing for the sake of the channel. Hard at the moment though just being so busy.
So the cathedral port heads generally benefit much more from a cnc port. The rectangle heads already flow so well that its hardly ever any kind of restriction, so usually 15-20whp is about as much gain as you see from them. But the CNC program is great value for money compared to a regular reco thats why we do so many of them.
But cathedral heads are far more limited in stock form, depending on the combo a cnc port on a 241/853/243 can pick up a huge chunk of power
Typically your cammed manual cnc headed 6 liters reach high 400's pretty regularly I'm thinking the $900 it would of cost to slip a 1287 and a set of lifters would of easily been worth it, especially when you could sell the old cam and lifters on marketplace for a few hundred .
Surely there is nothing a ve or vf has that gives an advantage to make more power than a vz.
that is surprising and very interesting only 15-20hp with CNC heads did he have a cam and upped compression?
I'm in Victoria and I just had a Dyno Tune done to my HSV LS3 it has extractors and Dual 3 inch exhaust Bi-modal mufflers and CAI. After getting it back I noticed the Bi-modal mufflers were closed the whole time it was getting tuned, (I was there the whole time) I asked them if it would make a difference to the tune and horse power numbers and they said that it would make no difference!! Is that correct. Cheers wish I lived near you guy's to tune my car.
Hi love you content
How do I contact you to do a cam and tune on my WM Statesman with a Gen IV L98 6.0ltr……?
Could it be that issue you guys have shown us before where the oil pump isn't installed correctly and rubs?
cam bearing?
how much more hp would you expect from cnc porting cathedral port heads? I have a cammed VE thats making 475hp and wondering if it would push me to the 500hp mark just cause it sounds cool haha.
I went from 275rwkw cammed then ported head made jus over 300rw mainly top end power the port heads give. Ls1 it was aswel
What happened to the e46 Barra swap build? Only can find 2 eps?
@@baeley1042 project was scrapped due to the amount of foreseen time to get the conversion integrated and working correctly and have it back on the road.
@@baeley1042 we still have the car/engine/conversion gear. We were going to throw a T5 behind it and finish the E46 as a Barra powered drift hack. However, the closing down of Archerfield Drift Park pretty well put a stop even on that idea too.
So not sure yet, may just sell it all as a project for anyone else who wishes to finish it. Still have everything apart from the ZF6 which was sold off.
@@BoostGumps what do you reckon the labour time would of been to complete it.
Start to finish hah
@@baeley1042 would have been massive. The amount of the firewall and trans tunnel were had to cut out to fit it, and the fact that the barra took up all the room that would be required for the factory e46 fan box. To get it all in and integrated and get all of those factory functions working somehow would have been am insanely huge job!
@@BoostGumps fair enough
Question for ya
Do you know if the m54 are somewhat reliable with a full engine rebuild and some boost thought it?
What oil pump do you guys run with your cams?
@@VN-346 GM pumps always 👍
@@BoostGumpsthanks standard or high pressure?
@@VN-346 usually high pressure, sometimes high volume, it depends on the setup and the intended use of the vehicle. For instance - a Manual VT-VZ that was going to be used for pretty spirited driving, or track work like drifting, we wouldn’t put a high volume pump on. The extended high RPM use with the crappy VT-VZ sump means youre more likely to drain the sump dry and spin a bearing than do any good with a high volume pump. We just take it on a case by case basis.
@@BoostGumps thanks guys keep up the great content and thanks for replying 🙏🏽
@@BoostGumpswe use standard gm pumps however we open them up and give them a tidy with the dremel and port them
Burnout car has been copping it for over 3 years
Banger of an ep, super informative as always, but dude you gotta trim them fingernails
But then he won't do as well at the drags
@@smoothwalrus9354 HAHAHA! 🤣🤣 Theyre handy af I use them all the time, been playing heaps of guitar again lately too. Gross but useful
@@BoostGumps nice to hear you're getting some rec time in, you deserve it mate
i think u mean Diagnosing not Daignosing
Absolutely lol cheers for the heads up!