6th Gen Zl1

Took this car in to straighten out various issues from another shop. Ported heads, cam, Magnuson 2650, 2" headers, Big Gulp, 103mm TB.

[@bradgrabiak6792]

Matt, another great video 👍.

[@michaelshaffer2319]

Definitely some of the best videos out there for LT content. Love the tuning and datalog reviews.

[@LMBC6Brian]

I have a 2650 on my stock 21 ZL1. No other mods. It came with a 90mm pulley and I see anywhere 14.5 to 15psi. Made 700rwhp on straight 93 only. I do run octanium from time to time but looking to do some small e blend like e20/30 we will see. But so far its been good.

[@davidciesielski8251]

Thank you so much!

[@chmgeg1025]

I just got the same set up, always wonder if they did it right lol. From one shop to another. Asked my guy why he didn’t go with meth. Or e85. There telling me it blow the engine up. Who knows who’s right

[@ANMIV517]

Back in the day the golden rule on pump gas was 18psi (turbocharged cars usually admittedly) why is 17 dangerous on pump? Also lots of stock turbo cars these days running over 20psi on pump🤷🏻‍♂️

[@ApeMotorsports]

if you're talking smaller displacement DOHC engines, yes those can take more cylinder pressures on lower octane due to the higher efficiency of a 4 valve pent roof combustion chamber.

[@ANMIV517]

@@ApeMotorsports so to make sure I understand it comes down to having enough octane to keep knock in check and different platforms can get away with more cyl pressure with pump before knock becomes a problem

[@ApeMotorsports]

Yes. In my experience the LT4's at 10:1 compression start to get pretty knock sensitive on 93 octane above 13psi. You can run more boost than that, but you have to pull timing to keep the knock out of it. Any power increase with more boost is lost with pulling the timing back. Some tuners will desensitize the knock sensors and push them harder. I've seen plenty of this and it usually ends up with a hurt motor. We have several ZL1's in the queue for engine rebuilds that came from other shops. All were being pushed too hard on 93 octane. They'll survive it for a little while, but usually a few months of it they hurt a piston.

[@ANMIV517]

@@ApeMotorsports thanks for the thorough reply, I wish your shop was closer. Any shops in south FL you recommend?

[@lethal5.041]

This is a 5th Gen. Camaro itsi not a 6th Gen.until the body and interior change but Chevy is discontinuing the Camaro so there will not be a 6th Gen. Camaro

[@Silas5628]

Stay away from your dads special brownies

[@lethal5.041]

@Jonathan Corey lol I can tell you are the special brownie