Heating Problems

[holstine_racing]

Ok guys see if this makes since to you. If i run a 2 barrel and race it does not get hot. As soon as i put on the 4 barrel it starts running hot. Any ideas?

[Dirtrunner35]

I would say too lean.

[fast_crew]

HP makes heat, you may have enough air flow or water flow to cool 400HP but maybe not enough for 450HP. Besure shroud is sealed well to the Rad, so that all air is pulled through the rad. Use some duct work in front of rad to help force air through rad and not around it. Just some ideas.