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I would bet it fits.
Originally Posted by Mr Maine
(Post 4553382)
Cool, i didnt think a 525sc would fit under the hatch of a 311 but maybe it will
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Originally Posted by 79formula
(Post 4553175)
I had a merc 420 that I made into a 525sc. I had the ebay dart hp500 knock off intake. The blower is only about an inch taller. Anyways I did 2399 pistons, stock forged rods and crank. My heads were junk, so I picked up a set of HP500 rectangle port heads, the only difference was 2.25 vs 2.19 intake valves.
Heres the full list in a better order. Block: Stock MK IV .060 over Pistons: Speed Pro Forged 2399 Crank: GM Forged Rods: GM Forged Cam: Crane 134561 Flat Cam Heads: HP500 Rectangle port Valves: Manley Stainless intake with Inconel Exhaust Springs:Crane 99896-16 springs Rockers: Comp Ultra Pro MagnumXD Blower: Weiand 177/ Merc525 Carb: 1050 Dominator Exhaust: EMI Thunder. It made 572hp @5600RPM, I dont remember the torque But I want to say over 600. I remember thinking while it was on the dyno that it could break a bravo on demand. I have over 60 hours on the setup and it has performed perfectly. It starts easy. It idles well. I am really happy. It is thirsty though. I did gain 10mph over a 420. |
I'm strictly an internet mechanic, but the 240 blowers are the same height and you can turn them slower with less heat into the engines.
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The cam sounds pretty healthy imo. Does not sound like a 900sc or other big power, but for sure healthier than a 454 mag.
Originally Posted by mike tkach
(Post 4553495)
i just installed one of these cam,s,plan on firing the engine in the am,does it have a rough sounding idle?
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All true. I went with the 525sc setup because it was merc. Plug and play. I knew accessories would bolt right up, thermostat housing would work, and jetting and boost would be right for a 454. It was just a super simple add on.
Originally Posted by Baja Rooster
(Post 4553604)
I'm strictly an internet mechanic, but the 240 blowers are the same height and you can turn them slower with less heat into the engines.
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So, 79, how is the Bravo holding up? Any extra maintenance?
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So far so good.
Originally Posted by ph1971
(Post 4553848)
So, 79, how is the Bravo holding up? Any extra maintenance?
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Originally Posted by mike tkach
(Post 4553495)
i just installed one of these cam,s,plan on firing the engine in the am,does it have a rough sounding idle?
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