I have used the March kit before worked well. Is there any cooling issues with it..didn't know since.pulleys were different sizes if it would affect it..
No cooling issues, zero. The rest of the cooling on the E body was a recored OE radiator, repopped fan shroud, MP viscous 5 blade fan and a 50/50 anti freeze mix.
The most power the engine received with this set up was a 360 @ 10.79-1, Edelbrock top end 1-3/4 header with a purple 292 Hyd cam set up. Backed by a 4spd and 4.10’s riding on 28 inch tires.
At one point I was driving this set up as a daily on a 40 mile commute one way (80 miles daily round trip) during NYC rush hour times into Queens on the clogged Hwy/pkwy. It was a 1 way, 1 hour (sometimes plus) commute.
The only thing that sucked was the competition clutch.