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looking thru your pics I saw the hillborn injection. half hour ago I saw that manifolds great grand daddy on craigslist... https://allentown.craigslist.org/pts/6053419465.html
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Originally Posted by freshwaterfiend
(Post 4545396)
Post pics of the custom pieces!
This is going to be a fun machine, http://i.imgur.com/ZnuXsaj.jpg http://i.imgur.com/lJYvxMw.jpg |
looks like the velocity stacks got shortened for the dyno, did they pick a set length or determine it from dyno pulls? Awesome project.
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We tested 12", 10", 9", and 7" stack lengths. 9" made the best averages. I'll post results later from a real computer.
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Did you try 2 different lengths at same time - long port / short port ?
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No because the o2's were dead nuts consistent from hole to hole so each cylinder was doing the same thing anyway
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You guys excited ? Must be. :)
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Originally Posted by 900HP
(Post 4551989)
No because the o2's were dead nuts consistent from hole to hole so each cylinder was doing the same thing anyway
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Yes if I recall 13 to 15 - but going off the top of my head. Long week for all of us here so Mark can reconfirm that. .
Mark at Throttle's Performance did one hell of a job building the engine. settled in for best overall -- at 934 hp and 906 ft lbs of tq. - we did see 949 hp with 7 inch stacks but torque was down with those sizes. Mark also is extremely good with EFI set ups and tuning. I highly recommend him for anything related to performance builds and any related EFI set ups along with parts buying. We will be using 8 wide bands in the headers once all of those gets made by Stainless Headers located in Minnesota. . Also want to thank Driven Racing Oil whom was johnny on the spot for the their breakin oil and marine version 15 w 50 racing motor oil in which we ran for the dyno.. |
Originally Posted by BUP
(Post 4552009)
Yes if I recall 13 to 15 - but going off the top of my head. Long week for all of us here so Mark can reconfirm that. .
Mark at Throttle's Performance did one hell of a job building the engine. settled in for best overall -- at 936 hp and 906 ft lbs of tq. - we did see 949 hp with 7 inch stacks but torque was down with those sizes. Mark also is extremely good with EFI set ups and tuning. I highly recommend him for anything related to performance builds and any related EFI set ups along with parts buying. We will be using 8 wide bands in the headers once all of those gets made by Stainless Headers located in Minnesota. . Also want thank Driven Racing Oil whom was johnny on the spot for the their breakin oil and marine version 15 w 50 racing motor oil. Runs good nice build. |
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