540ci 700hp build recipe
07-31-2016, 05:03 AM
#11
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509 Brodix BB1 CNC 260*270*@.050 .680" lift 112 lsa 9.5:1 compression 715hp @6300 rpm. Motor kept making horsepower to 7400rpm where the pull was ended because the desired rpm in the boat was 6300.
540 Merlin steel 320 525efi cam 9.5:1 650hp @ 5500rpm 630tq. No need to spend $3000 on a set of heads when $1,000 set of heads will do. For that matter with 540 ci's if 650 was the goal a GM steel head will do. If you want to spend $3000-$4,000 on a set of heads 750hp is a better target than 700hp.
540 Merlin steel 320 525efi cam 9.5:1 650hp @ 5500rpm 630tq. No need to spend $3000 on a set of heads when $1,000 set of heads will do. For that matter with 540 ci's if 650 was the goal a GM steel head will do. If you want to spend $3000-$4,000 on a set of heads 750hp is a better target than 700hp.
07-31-2016, 08:08 AM
#12
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509 Brodix BB1 CNC 260*270*@.050 .680" lift 112 lsa 9.5:1 compression 715hp @6300 rpm. Motor kept making horsepower to 7400rpm where the pull was ended because the desired rpm in the boat was 6300.
540 Merlin steel 320 525efi cam 9.5:1 650hp @ 5500rpm 630tq. No need to spend $3000 on a set of heads when $1,000 set of heads will do. For that matter with 540 ci's if 650 was the goal a GM steel head will do. If you want to spend $3000-$4,000 on a set of heads 750hp is a better target than 700hp.
540 Merlin steel 320 525efi cam 9.5:1 650hp @ 5500rpm 630tq. No need to spend $3000 on a set of heads when $1,000 set of heads will do. For that matter with 540 ci's if 650 was the goal a GM steel head will do. If you want to spend $3000-$4,000 on a set of heads 750hp is a better target than 700hp.
07-31-2016, 09:38 AM
#13
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Pretty sure that mpi will need a bunch of help to get much HP over 600, ( Smitty ) on this board has done a bunch of dyno testing with these intakes, might want to send him a pm and chat,
07-31-2016, 05:17 PM
#15
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I wouldn't use the merlin heads.but if you already have them.
07-31-2016, 05:45 PM
#16
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Rookie - anyone you know run the 298cc 24* Oval Race Rite ?
Just wondering howthese are in real world. Came out last year I think.
On paper they look impressive, but we know how that goes. LOl.
Here they are: http://www.brodix.com/heads/big-bloc...block-series24
BP RR BB-3 XTRA O™
• 100% CNC Ported
• 24° Valve Angle
• Flows Over 390 cfm
• 298 cc Intake Port
• Exhaust Ports in Stock Location
Just wondering howthese are in real world. Came out last year I think.
On paper they look impressive, but we know how that goes. LOl.
Here they are: http://www.brodix.com/heads/big-bloc...block-series24
BP RR BB-3 XTRA O™
• 100% CNC Ported
• 24° Valve Angle
• Flows Over 390 cfm
• 298 cc Intake Port
• Exhaust Ports in Stock Location
That is so strange I was just reading up on those last night. How strange... Was wondering the same as you posted. Lol
07-31-2016, 05:51 PM
#17
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He's gonna tell you the exhaust port is prolly to big and lazy. Lol. If they are what they claim my opinion is they would be an awesome head. Would love to try them on a bigger cubic inch engine.
Last edited by getrdunn; 07-31-2016 at 06:30 PM.
07-31-2016, 06:12 PM
#18
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I'm building a pair of 555/565 (undecided) and am aiming for 700hp plus at or under 5,700. Build so far is valokoized pro 1 310's, edelbrock sv-565 intake, 1050 dominator and unsure on cam however have two new billet 244/248-644/648 on a 111 custom grinds. I'd like a little more lift. Compression will be 10.5:1.
Just an FYI Gellner Racing was punching out 540's with virgin pro 1's, dart intake, 4150 1000 cfm Holley, same cam as above and making 650 around 6k rpm. Would make much more power with head porting and a little intake work.
Just an FYI Gellner Racing was punching out 540's with virgin pro 1's, dart intake, 4150 1000 cfm Holley, same cam as above and making 650 around 6k rpm. Would make much more power with head porting and a little intake work.
Last edited by getrdunn; 07-31-2016 at 06:21 PM.
07-31-2016, 06:35 PM
#20
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Interesting. One would think the SV565 would have too much cross sectional area for a low rpm 555/565.
looks like I'll be doing some digging on this.
looks like I'll be doing some digging on this.
