Endurance Short Stroke BBC
#31
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Project kept on growing, I wanted every surface machined and cleaned up, and made perfect, and to do the best job, I had to go 522, that was the only way to make everything sweet. The problem is, that I had to have custom pistons made with a specialized displacement, which took more then a month to show up, since it was race season. Which led to my project taking longer and of course adding a chunk of change. But in the long run, everything assembled went smoothly, because all of the surfaces were machined perfectly. My Engine assembler has access to a huge machine shop and has 35+ years experience with the tools! Everything had to be balanced. In the end the price tag was large, but i know that every part was new, or machined to new specs
Last edited by cigrocket; 11-06-2017 at 11:14 AM.
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29 FOUNTAIN FUN (06-27-2020), TylerBurich (11-06-2017)
#32
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Were you shooting for a specific cr? Is that why you had to go custom on pistons? I'm looking at the srp line of JE pistons in 4.560" bore. Also leaning towards new scat cranks and rods. I'm not reusing any of my current short blocks.
#34
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After throwing around the stroke issue I'm currently going with a 550 standard deck.a hydralic roller cam 10.2 to one compression and fuel injection.
I didn't want to go with the longer stroke and tall deck for stroke and alignment of my exhaust etc.
should put out over 700hp and high 600 torque.
torque will be over 600 up to 6000.
I didn't want to go with the longer stroke and tall deck for stroke and alignment of my exhaust etc.
should put out over 700hp and high 600 torque.
torque will be over 600 up to 6000.
#35
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tyler,a 509 [4.500 bore 4.000 stroke]a crane 168741 hyd roller cam and your heads will exceed 600 hp.i just finished the same combination but it has a set of the engine quest heads.it is going to the dyno next week,i will post the results but i am expecting 625 + or - 10.
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#36
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What carb and intake Mike ?
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29 FOUNTAIN FUN (06-27-2020), TylerBurich (11-07-2017)
#38
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Photos and Videos on the last page of the thread above is how the engines are dressed out now. I know I will need more carb it currently has 800 quick fuels. Should I plan on going to a dominator style? I have room for a small spacer if needed. Thanks Mike!
#39
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So I snapped a crank in my 311 memorial day weekend !
Photos and Videos on the last page of the thread above is how the engines are dressed out now. I know I will need more carb it currently has 800 quick fuels. Should I plan on going to a dominator style? I have room for a small spacer if needed. Thanks Mike!
Photos and Videos on the last page of the thread above is how the engines are dressed out now. I know I will need more carb it currently has 800 quick fuels. Should I plan on going to a dominator style? I have room for a small spacer if needed. Thanks Mike!
#40
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Just caught this thread. I have a 524 similar to what you are looking to build. It's a 4.565 bore with a 4" stroke, 6.385 Eagle H-beam rods, AFR 305 Rectangular heads with CNC chambers and bowls, Brodix HV2000 intake that has been ported with the heads. Custom Holley 950 cfm 4150, custom hydraulic roller cam with .611/.623 lift 242/252 @.050, 10.1:1 compression, Crower stainless rockers with a stud girdle. MSD 6M ignition and Lightning wet headers. It sounds awesome, a little too, I had to put Gibson mufflers on it to keep from getting tickets. First time I started it after the rebuild in the marina, it sounded like thunder. I never had it dyno'd but it runs better than it sounds. I've had my boat to 90 with 4 people and a full tank of gas, I can only go half throttle getting on plane or the prop blows out. Acceleration from 45 is absolutely amazing. Big bore short stroke engines are very efficient and love to rev quickly.