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SN-95 and New Edge Mustangs
Dyno results and I need advice!
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<blockquote data-quote="1qwkpny" data-source="post: 170013" data-attributes="member: 3195"><p>My brother has the systemax II kit on a 342 in his '91 GT I helped build this engine and I can tell you that the holley sy.mxII heads suck out of the box. We spent 1200.00 on porting now they flow great. The holley s.maxII u/l intake is awesome, if your going with a centrifugal blower then it is the intake to have PERIOD. By the way I'ld get a bigger cam too. If I were you I would use the AFR 185 (supercharged) or 165's (n.a.) they are second to none out of the box. The holley intake is not quite as good on the street as the gt40(b/c its more of an upper rpm3000 on up intake). If your keeping the stock shortblock (from which I've personally witnessed make over 650hp with main girdle) I would pull the pan and install a main girdle/support and you'll be fine. The kennebell s/c 'ers are great and would be absolutely killer combined w/afr 185's and a dual pattern cam w/ 112 deg lobe center. Plus at least 30lb injectors/255lph pump. No matter what you do make sure you check the piston to valve clearance(holleys w/2.02 intake valve req. notched pistons)</p></blockquote><p></p>
[QUOTE="1qwkpny, post: 170013, member: 3195"] My brother has the systemax II kit on a 342 in his '91 GT I helped build this engine and I can tell you that the holley sy.mxII heads suck out of the box. We spent 1200.00 on porting now they flow great. The holley s.maxII u/l intake is awesome, if your going with a centrifugal blower then it is the intake to have PERIOD. By the way I'ld get a bigger cam too. If I were you I would use the AFR 185 (supercharged) or 165's (n.a.) they are second to none out of the box. The holley intake is not quite as good on the street as the gt40(b/c its more of an upper rpm3000 on up intake). If your keeping the stock shortblock (from which I've personally witnessed make over 650hp with main girdle) I would pull the pan and install a main girdle/support and you'll be fine. The kennebell s/c 'ers are great and would be absolutely killer combined w/afr 185's and a dual pattern cam w/ 112 deg lobe center. Plus at least 30lb injectors/255lph pump. No matter what you do make sure you check the piston to valve clearance(holleys w/2.02 intake valve req. notched pistons) [/QUOTE]
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SN-95 and New Edge Mustangs
Dyno results and I need advice!
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