540 n/a help (little long)
07-23-2003 | 09:00 PM
#23
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Joined: Feb 2002
Posts: 1,296
Likes: 1
From: LaPorte IN.
Hello,
I have 2cents worth on this one. I currently am running a 13.2:1 compression 498" BBC with good flowing ported 325 Pro 1 heads, comp solid roller (272/280 @ .050" .715" lift), merlin intake, Nickerson stage 5 1050, CMI E-tops, Dooley 10QT pan running 8QTS, full MSD. Anyway this combo is a lot of fun for running hard, but it is no pleasure boat motor. I have 30 trouble free hrs on it since last rebuild. On a motor like this valve springs and lifters need to be changed out every 50 hrs and the motor needs a complete going over at 200hrs. Even with this wild set up 800 HP would be a stretch and with the E-top exhaust it is realistically somewhere in the 725 to 750 HP range at 6200 RPM. Here is the lowdown on my 800 HP combo for next year.
598" BBC (4.6 X 4.5)
10:1 compression
355 CNC or 345 JimV ported heads
Custom grind solid roller cam (276/284 @ .050" on a 114 +4 install with .731" lift)
1200 + CFM Dominator carb.
Dart match ported intake
Full MSD Ignition
Full runner length CMI Sport Tubes or Tube Tops.
I think that would be close to 800 HP at 6000 to 6500 RPM on pump gas. Not a pleasure boat motor!!! If you put more than 15 or 20 hrs on your motor per year, go blower and hydraulic roller. I average 10 hrs per year so I will stay solid.
Craig
I have 2cents worth on this one. I currently am running a 13.2:1 compression 498" BBC with good flowing ported 325 Pro 1 heads, comp solid roller (272/280 @ .050" .715" lift), merlin intake, Nickerson stage 5 1050, CMI E-tops, Dooley 10QT pan running 8QTS, full MSD. Anyway this combo is a lot of fun for running hard, but it is no pleasure boat motor. I have 30 trouble free hrs on it since last rebuild. On a motor like this valve springs and lifters need to be changed out every 50 hrs and the motor needs a complete going over at 200hrs. Even with this wild set up 800 HP would be a stretch and with the E-top exhaust it is realistically somewhere in the 725 to 750 HP range at 6200 RPM. Here is the lowdown on my 800 HP combo for next year.
598" BBC (4.6 X 4.5)
10:1 compression
355 CNC or 345 JimV ported heads
Custom grind solid roller cam (276/284 @ .050" on a 114 +4 install with .731" lift)
1200 + CFM Dominator carb.
Dart match ported intake
Full MSD Ignition
Full runner length CMI Sport Tubes or Tube Tops.
I think that would be close to 800 HP at 6000 to 6500 RPM on pump gas. Not a pleasure boat motor!!! If you put more than 15 or 20 hrs on your motor per year, go blower and hydraulic roller. I average 10 hrs per year so I will stay solid.
Craig
07-24-2003 | 08:22 PM
#25
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Joined: Jul 2002
Posts: 109
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thanks for reply budah
should i run the block cold even though i have alum. heads?
here are the parts i am stuck with (already bought them)
merlin block canfield 310cc heads 10.1 pistons and i have my choice of intakes dart ,rpm air gap ,or a holley knock off of the dart you know the one also a crane 139741 roller cam whata yta think power wise
bo
should i run the block cold even though i have alum. heads?
here are the parts i am stuck with (already bought them)
merlin block canfield 310cc heads 10.1 pistons and i have my choice of intakes dart ,rpm air gap ,or a holley knock off of the dart you know the one also a crane 139741 roller cam whata yta think power wise
bo
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