high rise manifold

fordkid68 · 05-16-2003, 12:54 AM

how much power does A high rise manifold actualy add. I'm not talking about the real high ones. just the average.

and how high can you actually go with out having clearance issues with A 66 mustang.

thanks
ford kid

hobgoblin351 · 05-16-2003, 11:48 AM

A highrise manifold, either a single plain or a duel will usually be more efficient than a stock one. It will allow you to flow more air thus increasing you HP output. In the case of say a single plain highrise it will allow you to raise the RPM range of the engine and run bigger cams. How much depends on what size cam, and other changes made to the engine. If all you are changeing is the manifold you'll probably only add around 15-20 horses.
As far as clearence I couldn't tell you, it depends on the manifold/carb/aircleaner setup. Good luck

fordkid68 · 05-18-2003, 01:38 AM

good I was hopping it would be around 15.

thanks
ford kid

05-16-2003, 12:54 AM	#1
fordkid68 Registered Member Join Date: Jan 2002 Location: fremont Posts: 306	high rise manifold how much power does A high rise manifold actualy add. I'm not talking about the real high ones. just the average. and how high can you actually go with out having clearance issues with A 66 mustang. thanks ford kid

05-16-2003, 11:48 AM	#2
hobgoblin351 Registered Member Join Date: Sep 2002 Location: NYC Posts: 245	A highrise manifold, either a single plain or a duel will usually be more efficient than a stock one. It will allow you to flow more air thus increasing you HP output. In the case of say a single plain highrise it will allow you to raise the RPM range of the engine and run bigger cams. How much depends on what size cam, and other changes made to the engine. If all you are changeing is the manifold you'll probably only add around 15-20 horses. As far as clearence I couldn't tell you, it depends on the manifold/carb/aircleaner setup. Good luck __________________ 1970 Stang Conv: en:Boss351 (balanced/blueprinted) mech cam(240*@.050/.540 lift) Scrw in studs/comp cams rllr rkr Mldn valves 2.19in 1.71ex ported polished cc'd hrdnd ex Keith Black FT pistons(10.25/1) Weiand Excellorator manifold Holley700 DP mech 2nds MSD 6 box and Dis Headers/2 1/2 inch duels tr: modified FMX re:9-inch/3.89 limited slip

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05-18-2003, 01:38 AM	#3
fordkid68 Registered Member Join Date: Jan 2002 Location: fremont Posts: 306	good I was hopping it would be around 15. thanks ford kid