vortec v6
- Thread starter typhoon x
- Start date
Hongkongtyphooey
New member
Re: vortec v6
8-9psi is generally a maximum for a stock long block that's originally an NA with 10:1 or so compression ratio, regardless of the engine size or configuration. It's about the fuelling and knock, (detonation), risk.
Others will have experience that they'll quote you hopefully but no way should you chance it above 8-9psi, unmodified.
The SyTy block has a heat treated crank, (I think, since mine rings like a bell unlike standard cast iron which just has a dead note when struck), spheroidal graphite main caps and hyper-eutectic pistons to give tight clearance because of low expansion at high temperature.
I would strip the block completely and replace all of the rotating assembly if possible. The heads should be fine though. I'm converting my LB4's to Vortec's myself.
8-9psi is generally a maximum for a stock long block that's originally an NA with 10:1 or so compression ratio, regardless of the engine size or configuration. It's about the fuelling and knock, (detonation), risk.
Others will have experience that they'll quote you hopefully but no way should you chance it above 8-9psi, unmodified.
The SyTy block has a heat treated crank, (I think, since mine rings like a bell unlike standard cast iron which just has a dead note when struck), spheroidal graphite main caps and hyper-eutectic pistons to give tight clearance because of low expansion at high temperature.
I would strip the block completely and replace all of the rotating assembly if possible. The heads should be fine though. I'm converting my LB4's to Vortec's myself.
![Quickstop [UK]](/data/avatars/m/5/5165.jpg?1570199786){kind=avatar}
Quickstop [UK]
Combating adversyty.
Re: vortec v6
http://www.syty.net/forums/showpost.php?p=455109&postcount=5
It's all in the tune but 15psi and up is possible, if not more.
http://www.syty.net/forums/showpost.php?p=455109&postcount=5
It's all in the tune but 15psi and up is possible, if not more.
pearl91chevy
Donating Member
Re: vortec v6
im gonna do this swap once/if my motor decides to go.. i got a 95 vortec motor complete ill be using.. nice getting some info on it
im gonna do this swap once/if my motor decides to go.. i got a 95 vortec motor complete ill be using.. nice getting some info on it
alwayscode390
pppssssshhhhhtttttttttttt
Re: vortec v6
What happened to your engine, did it let go? Seems like it was running strong in all those vids you posted before ---
What happened to your engine, did it let go? Seems like it was running strong in all those vids you posted before ---
dgoodhue
BuSTeD 4.3
Re: vortec v6
I have a Vortec motor and was running 13 psi on 93 octane. I am running Alky now (still not done tuning and working out the bugs). If you have a good running SyTy motor, I would go the route of Vortec heads and cam if you want to go faster. I am not convinced a Vortec motor is any stronger, at best it might be equal to stock short block.
How are you planning on tuning a Vortec motor?
I have a Vortec motor and was running 13 psi on 93 octane. I am running Alky now (still not done tuning and working out the bugs). If you have a good running SyTy motor, I would go the route of Vortec heads and cam if you want to go faster. I am not convinced a Vortec motor is any stronger, at best it might be equal to stock short block.
How are you planning on tuning a Vortec motor?
typhoon x
New member
Re: vortec v6
I will fall back on Hood for my tune. Im beating on the stock duty motor hard and i mean hard. Got a 20 shot of nos pre turbo. Alky after ic. And 22 psi. Ive even seen 25 psi. Happy twist of a nob. Hood told me to leave it alone. Go back if u want to turn the nob he said LOL. So im try a V motor and see what happens.
I will fall back on Hood for my tune. Im beating on the stock duty motor hard and i mean hard. Got a 20 shot of nos pre turbo. Alky after ic. And 22 psi. Ive even seen 25 psi. Happy twist of a nob. Hood told me to leave it alone. Go back if u want to turn the nob he said LOL. So im try a V motor and see what happens.
Quickstop [UK]
Combating adversyty.
Re: vortec v6
Just as an aside, with a rebuild using Eagle rods on the stock pan, you need to clear the pan slightly. Is this necessary on the Vortec cast pan and if so, with it being cast, how do you go about it?
Just as an aside, with a rebuild using Eagle rods on the stock pan, you need to clear the pan slightly. Is this necessary on the Vortec cast pan and if so, with it being cast, how do you go about it?