Reynolds - the 2017 Bathurst champion and 2018 pole sitter - is predicting the Supercars Championship's recent aero changes will make for a speedy rendition of the great race.

While hesitant to offer a concrete guess for where a pole-sitting time would be, Reynolds doesn't think a time in the low 2:03s would be surprising to see.

On top of that, the Erebus Motorsport driver believes the main event on Sunday is likely to wrap up in record time - weather permitting.

"I'm assuming with the aero update we'll see lap record pace, and it's probably going to hold for a very long time because after this year they're reducing engine power and aero and we won't achieve these lap time," Reynolds said.

"If you want to have your name up in lights then this is the year to do it.

"The problem is that our times should be the same as last year but we had that Mustang come in and cause a lot of controversy and now we'll have to go half a second faster around here than what we ever have before - possibly more.

"It could even be a low three."

The aero changes for the category's Holden Commodore ZBs came into effect prior to the previous round at Pukekohe.

Reynolds comes to Bathurst with a mixed bag of results from the New Zealand round so he's keen to see what the aero changes will achieve on the mount.

"I think since the category's had the parity adjustment between the cars I think we could be in a better starting spot to achieve a better result," he said.

"We've only had one race at one type of track but this one will stand out. It's the ultimate track with high speed performance across the top versus drag.

"You want the best of both worlds but you can't have the most amount of downforce and the least amount of drag. It doesn't work like that."

Given the way 2018's Bathurst 1000 played out Reynolds is determined to make amends.

Reynolds was on track to defend his Bathurst victory last year before suffering a leg cramp inside the final 30 laps.

His accidental rear wheel spin on account of the cramp - and subsequent drive through penalty - all but ended his winning hopes.

Entering the 2019 race without the defending champion tag has changed the vibe around the race for Reynolds.

"[The 2017 win] was a great story. We were the smallest team in pit lane, winning the biggest race of the year, and I was out there telling everyone what a great story that was and forgot about trying to win the race in 2018," he said.

"This year's different because no-one wants to talk to a loser, so it's perfect.

"This week's been a nice build up and the weekend won't be as hot as last year. We learned a lot from what we did wrong in the race and try to mitigate those mistakes.

"It was a hardcore race last year with lap records broken all the time. It's not a six hour endurance race. It's a six hour sprint race."