509 or 540
I want to repower 1990 27 datona but dont know witch to go with i have merlin 320 heads & intakes gil exhust anyone tryed ohio crank short blocks & witch cams to use - twin engines
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Originally Posted by itbs
(Post 2388016)
I want to repower 1990 27 datona but dont know witch to go with i have merlin 320 heads & intakes gil exhust anyone tryed ohio crank short blocks & witch cams to use - twin engines
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30 over 454s
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If you are going to go blown go with the 509 if you want to go na go with the 540.......Each are real easy to get 650 -700 hoarse power
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Originally Posted by itbs
(Post 2388209)
30 over 454s
Rotating assemblies 1800 each Weiand 177 blowers - 2000 each That will cost you less than ordering short blocks for the same outcome and they will make gobs of torque. Just my .02 if you are on a budget. If you want short blocks, call Scott at Dyno Flow and he'll sell you 572-598 short blocks for the same price as most guys sell a 540. |
want to stay na and short deck 9.8 blocks
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Originally Posted by itbs
(Post 2388273)
want to stay na and short deck 9.8 blocks
I have done somw very similar all ready. GL with your project. What kind of boat did you say they were going into? |
i built a pair of 496's na not the merc 496 but a 60 over bore with a 4.25 crank in a 454 block and made 640 and 6000 a 496 will make more power then a 509 eather way
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What is your definition of small cam? HP500cam or Crane -731 or bigger?
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Originally Posted by mikes280
(Post 2388325)
i built a pair of 496's na not the merc 496 but a 60 over bore with a 4.25 crank in a 454 block and made 640 and 6000 a 496 will make more power then a 509 eather way
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