454 Mag questions
#11
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Thanks, great info guys. i am not looking to get to deep into these engines as i have another pair i may put in next season. So far i am pretty set on the AirGap intake and bigger cam (anybody got a part # thay can recomend?) also thinking about Dana Torque flow exhaust. Would i benafit from 1.7 roller rockers over 1.5's? what is the up and down side of the 1.7 rockers?
http://www.zippyvideos.com/683233795...5-05_008/*cuda
#12
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The Crane 241 is a slight improvemnt over the stock Merc 420 cam. Mine runs very strong with a set of Gold roller rockers the 241 cam Air Gap or similar intake and an 800 Holley. The stock alum intake with a little more spacer and the stock 750cfm Qjet carb is still a very good combo with that cam.Also some better than stock exhaust.
My stock springs were fine and good enough for this cam.
My stock springs were fine and good enough for this cam.
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pretty sure i am going with Dana torque flow manifolds when i do the mods. i have been looking for a reason to get them. you guys are right the improvments wont be fully realized without good breathing exhaust. its not really a money issue but what i plan on in the future, the 525's i have lined up have e tops on them already but i am thinking they wont find their way into this boat anyway. most likely sit on them for a future project.
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Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
08 OPA High Points Champion
10 OPA Class 1 National Champion ( happy now Ed! )
Last edited by glassdave; 03-14-2007 at 11:31 PM.
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Dave, Talk to Dean Gellner, (MrHorsepower1 on OSO), in Cleveland and he can get parts for you to wake that thing up. A good combo like heads, cams and intake manifold will make a difference. Dean has the experience with the 454 from Dyno pulls so he knows a decent amount of hp mods in mind for you. When I had Gellner upgrade my original 454 with just head work and a intake manifold, I was pushing close to 480hp.
Last edited by pkspx; 03-15-2007 at 07:54 PM.
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