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Re: How Much Boost????
622 cu inch?
I like to hear that screaming at 6000 rpm. |
Re: How Much Boost????
Fastlane 40,Crate Gen VI 502's.8.75:1 ,5lb boost,850DP's,Aussie stainless exhaust,Weiand 177's,540 dyno HP.240 hours,not a problem.As a home engine builder and this type of set up where the guy at the wheel is the computer a exhaust mixture meter is invaluable.
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Re: How Much Boost????
8.2 static compression
4-6 lbs boost 522 ci Merlin heads 132cc's Crane hydraulic roller B&M 250 No Inter-cooler 300 plus hours That's the power side of the engine Here's the durability side 4340 billet crankshaft Oliver billet rods JE pistons A.R.P fasteners Merlin block Machined by the best...Weston Machine Assembled in a shop where time is not a problem...mine |
Re: How Much Boost????
Originally Posted by MESA BALANCING
We have a customer who we build the engines for in a Daytona we run a 4.625 bore by 4.625 stroke the cyl heads are 125 cc and a flat top piston with one of our custom cams solid roller we run 9.5 lbs of boost with no inter cooler on 93 oct and run 119 mph at 5900rpm it is currently the fastest boat of its size in the Miami area. It has taken quite of work to make the combo work and its all in the cam we have had at least 5 cams before we had this one and I can tell you that the lobe sep has been the key. Ill give a clue its not from 110-114. Sincerely Laz Mesa
Roby |
Re: How Much Boost????
Originally Posted by MESA BALANCING
We have a customer who we build the engines for in a Daytona we run a 4.625 bore by 4.625 stroke the cyl heads are 125 cc and a flat top piston with one of our custom cams solid roller we run 9.5 lbs of boost with no inter cooler on 93 oct and run 119 mph at 5900rpm it is currently the fastest boat of its size in the Miami area. It has taken quite of work to make the combo work and its all in the cam we have had at least 5 cams before we had this one and I can tell you that the lobe sep has been the key. Ill give a clue its not from 110-114. Sincerely Laz Mesa
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Re: How Much Boost????
I know its old..
Are your top pulleys the size of dimes? Anyone else want to play? |
Re: How Much Boost????
1 Attachment(s)
Numbers from a stock HP500EFI with Rtech system:
Static compression 8.8:1 (stock) Boost pressure 7 psi Displacement 502 Heads Stock GM iron unported Cam Stock HP500EFI hydraulic roller Intercooled Rtech supercooler Type of S/C Vortech V-4 Engine Hours just installed |
Re: How Much Boost????
Be easy on those cranks....BTW looks wicked, let us in on the dyno numbers.
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Re: How Much Boost????
1 Attachment(s)
Static compression 8.1:1
Boost pressure 5 psi Displacement 580" Heads Merlin 345 w/ 126 CC chambers. Cam: Lunati Hyd. Blower Cam (.571 - .580) the rest I'm not sure 8-71 Hampton Blower underdriven 5% 766 hp and 753 lbs. torque at 4500. I went with a conservative setup for longevity but I could always pump up the boost if I want more juice. :eek: |
Re: How Much Boost????
1 Attachment(s)
8.45 CR
Boost 5.00" pulley 10 lbs on 92 oct 4.75" pulley 12lbs on 92 oct 4.25" pulley 15 lbs on 92 oct max tq @ +- 5400rpm, hp +-6700 rpm 12.2 A/F, 34 deg. timing, 72lbs injectors run @ 60 psi Displacement 434ci chevy small block AFR 227cc Heads Cam Solid Roller [email protected]: in 258, ex 264, lift .648", .667", 112cl EFI F.A.S.T. ECU Procharger M3 504 Intercooler Engine Hours 50 |
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