- Jul 9, 2003
- 1971 Stingray Bridgehampton Blue
This is what I have found out. I'm changing my stock 71' intake maniflod to a Edelbrock aluminum # 2101 Performer the only one that will work and fit pre 86' heads on a 270hp engine and hood clearance. There is enough hood clearance to put a 1" spacer with gaskets, (2) one top one bottom of the spacer on the maniflod. The stock gasket ( it's not a spacer) is a 1/4" thick, therefore you would be only raising the carb 7/8". The best style and material is a 4 hole spacer, ( better bottom end, idle to 4200rpm) than the open style spacer (comes on about 4000rpm) and made of phenolic resin. Plywood is very good material also, but the phenolic is made of wood with resin added. The rule of thumb is for every 10 deegres lower fuel/air mixture temp. = 1% hp. gain. That is why you don't want heat transfer to the carb. I didn't take heat readings before I started, but will have them when I finish and will share them in about a week. Any questions or comments please.