Nikwho
Well-Known Member
- Joined
- Jan 8, 2019
- Messages
- 284
- Reaction score
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Hello folks,
I previously started a thread, buy was leaning towards a 468/iron head build. You guys all helped me realize that my goals were not easily obtainable going that route. So, I have made progress! I've been collecting some parts. I've got a 502 longblock with 088 heads. BUT, I just picked up a set of Brodix "Big Brodie" heads. Was told that they flowed 365cfm by the machinist that removed them from another customers build. I belive that they were blended/ported to help flow. Currently the combustion chambers are at 119cc. My 502 has 4 bolt mains (as all do, to my knowledge) and an all forged rotating assembly. The heads can be milled to 110cc chambers. Not 100% certain, but I believe that the pistons are around -3cc dome. Low hour factory 4.470" bore. They are stamped "SRP 75F".
I don't want to land south of the 700 HP range. I'm okay with higher compression and running 100 octane fuel in the boat, if I cannot reach my goals on pump gas. Boat is currently a '74 Tahiti with 12JC pump, but looking for a different hull, more suited to handle the power. Pump will get rebuilt for the power and set up accordingly, but that'll come next.
So, with retaining the stock forged 4" crank and forged rods, and the factory forged SRP pistons, if possible, and utilizing my Brodix BB-2 Xtra blended heads, what is my path to making 700 HP? Seems like it's right on the brink of being a pump gas deal.
What kind of static compression do I need?
Do I need to go to a solid roller, or can I meet my goals with a hydraulic roller camshaft?
Can I do this with pump gas, or do I need to go to 100 octane fuel?
Can I do this with the SRP pistons, or will they be too low compression, even with my heads milled to 110cc?
I'm making serious headway on my build. Will be getting all machining processes done soon. Want this thing wrapped up by February, in the boat testing in March, and ready to run all summer.
Thanks a million for the expertise that you guys are so willing to share!
Nik
I previously started a thread, buy was leaning towards a 468/iron head build. You guys all helped me realize that my goals were not easily obtainable going that route. So, I have made progress! I've been collecting some parts. I've got a 502 longblock with 088 heads. BUT, I just picked up a set of Brodix "Big Brodie" heads. Was told that they flowed 365cfm by the machinist that removed them from another customers build. I belive that they were blended/ported to help flow. Currently the combustion chambers are at 119cc. My 502 has 4 bolt mains (as all do, to my knowledge) and an all forged rotating assembly. The heads can be milled to 110cc chambers. Not 100% certain, but I believe that the pistons are around -3cc dome. Low hour factory 4.470" bore. They are stamped "SRP 75F".
I don't want to land south of the 700 HP range. I'm okay with higher compression and running 100 octane fuel in the boat, if I cannot reach my goals on pump gas. Boat is currently a '74 Tahiti with 12JC pump, but looking for a different hull, more suited to handle the power. Pump will get rebuilt for the power and set up accordingly, but that'll come next.
So, with retaining the stock forged 4" crank and forged rods, and the factory forged SRP pistons, if possible, and utilizing my Brodix BB-2 Xtra blended heads, what is my path to making 700 HP? Seems like it's right on the brink of being a pump gas deal.
What kind of static compression do I need?
Do I need to go to a solid roller, or can I meet my goals with a hydraulic roller camshaft?
Can I do this with pump gas, or do I need to go to 100 octane fuel?
Can I do this with the SRP pistons, or will they be too low compression, even with my heads milled to 110cc?
I'm making serious headway on my build. Will be getting all machining processes done soon. Want this thing wrapped up by February, in the boat testing in March, and ready to run all summer.
Thanks a million for the expertise that you guys are so willing to share!
Nik