When I first started taking my full weight vert to the track it was a stock long block with GT-40 intake, 70mm TB, 75mm MAF, UD pulley's,and a short belt. My best times with this exremely mild set up were in the 13.50's @ 102mph with a 1.82 60ft. This was with 91 in the tank and timing at 16 deg. It was at Cecil County Dragway and the air was in the low 60's. On the last run of the night I put the timing back to 12 deg and my run was a 13.71 @ 100.5 with a 1.85 60ft. despite the air being about 2 degrees cooler. The next time down to the track the air was in the mid 70's and I tried to run 16 degrees again, but couldnt because of a slight ping. So now on the next trip to the track ( just for curiosity sake ) I started with stock timing, and then bumped it up in 2 degree incriments at a time. I was looking at the MPH more than ET at this point, because that tells you weather your making more power. Air was 67-70 for all runs. 1st run 99.98 mph, 2nd 100.64, 3rd 101.85, 4th 102.10. The 4th run was the best. When I tried to put more timing in for the next run I heard pinging and got out of it. Now I realize that this was done with 91, but it is obvious how much of a change the timing was making. I doubt 87 would have let me put that much timing in.
This topic has me thinking that when my 92 LX is finally up and running I may run my vert to see if there is a difference between 87 and 93 and how much timing each will allow and what the benifits are.
Dont get me wrong my vert will be running 87 with the stock timing, or whatever 87 will allow, but it is now just my weekend cruiser, and Im not looking for every last bit of power.