S/G Launch RPM

Charlie Yannetti · 05-01-2024, 10:13 AM

I found in my 27 Roadster that it depends on HP and converter stall.. I was running a 565 with 1030 HP, and the stall is 6500 RPM.. I started at 5000 RPM, and moved to 5300 RPM to help with the tree.. I'm now running a 540 with 970 HP, and the stall is 6400 in OK weather.. still leaving at 5300, and having no problems with the tree.. I weigh in at around 2150 lbs.. 5000 would be a good starting point, and see how the car reacts.. with good power, these 27 Roadsters can be a weeeeeee bit violent, requiring adjustments..

05-01-2024, 10:13 AM	#1
Charlie Yannetti Senior Member Join Date: Jan 2005 Location: Alpine, NJ Posts: 560 Likes: 181 Liked 183 Times in 79 Posts	Re: S/G Launch RPM I found in my 27 Roadster that it depends on HP and converter stall.. I was running a 565 with 1030 HP, and the stall is 6500 RPM.. I started at 5000 RPM, and moved to 5300 RPM to help with the tree.. I'm now running a 540 with 970 HP, and the stall is 6400 in OK weather.. still leaving at 5300, and having no problems with the tree.. I weigh in at around 2150 lbs.. 5000 would be a good starting point, and see how the car reacts.. with good power, these 27 Roadsters can be a weeeeeee bit violent, requiring adjustments..