What size pulley for ysi
10-09-2018, 12:49 AM
#1
Pro
Thread Starter
What size pulley for ysi
Finally got my ysi ordered. My current set up is a forged 427, heads, cam, Ttrim blower, 3.1 pulley, 8” overdrive, 8 rib set up. I hit 780 on e85. My goal is 900+ with the ysi, my question is, what is the smallest sized pulley I can put on without belt slip or going flip drive or 10 rib. Should I stick with the 3.1 or could I do a 2.9 or smaller? Thanks!
10-09-2018, 12:43 PM
#3
Team Owner
YSI is a lot harder to spin than a t-trim, so I wouldn't be surprised if a 3.1 slips on just an 8 rib. I know I had issues in the 3.15 range with just 8 rib.
10-09-2018, 12:44 PM
#4
Team Owner
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Finally got my ysi ordered. My current set up is a forged 427, heads, cam, Ttrim blower, 3.1 pulley, 8” overdrive, 8 rib set up. I hit 780 on e85. My goal is 900+ with the ysi, my question is, what is the smallest sized pulley I can put on without belt slip or going flip drive or 10 rib. Should I stick with the 3.1 or could I do a 2.9 or smaller? Thanks!
10-09-2018, 02:09 PM
#5
Team Owner
Yes it does, but not with just an 8 rib. I run a 2.70 with 10 rib and direct drive, zero issues. With just an 8 rib 3.1 maybe pushing it.
10-09-2018, 08:20 PM
#10
Racer
8 rib and a 3.0 and you will be able to reach your goals. You can do 2.7 but it’s not necessary, I made 930 uncorrected in Denver with the 2.7 on e85
10-11-2018, 08:39 AM
#16
Team Owner
A&A is WORLDs better for the flip drive. I've ran just about every setup. If you are going that far, might as well just do the 10 rib with flip. Cost difference is basically nothing at that point.
10-11-2018, 01:26 PM
#17
Safety Car
10-11-2018, 01:34 PM
#18
Le Mans Master
