427 update [Forums - C4 Technical]

C4 Technical > 427 update
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jsup	427 update	#1
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	ok...I dropped off the deposit today for the 427 I'm going with a 232/238 cam Heads are not determined yet. Either Dart or Brodix I am changing the SR to the MR. I have a sentimental attachment to the SR as the car was a TPI car from day one, which at this point seems not to matter. The MR makes more sense We are going 10.5 compression Pat is estimating at least 550 CHP, we're thinking closer to 575. This will be a unique engine as it will be the first one built on this new Dart block platform. Vic from Edlebrock is watching this build closely and intends to offer a motor based on the results of this build. Dart is also watching it closely to determine what they will do with this block. Pat is going to try to get it done before Carlisle, so I can go there. I am getting custom valve covers that will read "Pat Musi Performance" on one side of the cover, and 427 #1 on the other.... If anyone has any interest or questions, PM me. This is a new block, which from what Pat says, is almost impossible to get right now. He is starting the build soon...
	Posted on: 2008/8/7 3:41
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bogus	Re: 427 update	#2
Grand Imperial Pooh-Bah San Pedro, CA 20859 Posts Member since: 2005/9/7 0:00	I repeat: wow.
	Posted on: 2008/8/7 6:06
	_________________ The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me
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Qack	Re: 427 update	#3
Senior Guru Raleigh, NC 274 Posts Member since: 2007/12/11 0:00	I repeat ... A .. W ... E .... S ..... O ...... M ........ E !!!!!!!!
	Posted on: 2008/8/7 11:19
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cuisinartvette	Re: 427 update	#4
Elite Guru 1782 Posts Member since: 2005/9/16 0:00	Use the AFR 210s if you can they will make more power than the dart or brodix. Your CI can use about all of what those heads have to offer. Dont get stuck with a head and have to further port them to make power. Take it from a guy who bought Dart heads becuase they were $200 less and proceeded to spend thousands on them because "out of the box" the results were disappointing. Enjoy breaking them loose at 40 mph
	Posted on: 2008/8/7 11:27
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TommyT-Bone	Re: 427 update	#5
Chair-man of the bored Homestead USA 33766 Posts Member since: 2007/12/10 0:00
	Posted on: 2008/8/7 11:52

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pianoguy	Re: 427 update	#6
Guru Emeritus Apple Valley, MN 14762 Posts Member since: 2007/12/29 0:00	Woo-hoo!!!
	Posted on: 2008/8/7 12:21
	_________________ 1996 LT4 �Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.�- Jack Handey
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biggrizzly	Re: 427 update	#7
2011 Memorial Day Car Show Winner! Chesapeake Beach, Maryland 4543 Posts Member since: 2006/4/23 0:00	John, I hope this happens for Carlisle because I'd love to be able to meet you and check out the car.!! This is going to be a really cool C4
	Posted on: 2008/8/7 13:02
	_________________ Don Haller Corvette Club of America 94Coupe, 383Stroka, PeteK Trans, 3000stall, 3.54rear, Konis and bigger sways.
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jsup	Re: 427 update	#8
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	Quote: biggrizzly wrote: John, I hope this happens for Carlisle because I'd love to be able to meet you and check out the car.!! This is going to be a really cool C4 If not, we can get together afterwards. Maybe a NJ/DE/MD thing....see who we can scrape up.
	Posted on: 2008/8/7 13:29
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jsup	Re: 427 update	#9
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	Quote: cuisinartvette wrote: Use the AFR 210s if you can they will make more power than the dart or brodix. Your CI can use about all of what those heads have to offer. Dont get stuck with a head and have to further port them to make power. Take it from a guy who bought Dart heads becuase they were $200 less and proceeded to spend thousands on them because "out of the box" the results were disappointing. Enjoy breaking them loose at 40 mph Thanks for all the input. I appreciate it. NO decision is made on heads just yet. I asked pat outright what he perfers.. He carries Dart, Brodix, AFR, Edlebrock. His preferenceis Dart or Brodix. He does agree that we need to see 200CFM on the exhaust side, he's working with Dart and Brodix to get the flow to 200. If we can't get the flow there, and be reasonable on the price (we set the heads at $1500 in the quote) we'll figure it out. so...we know the numbers.we just need to see what's the best option.
	Posted on: 2008/8/7 13:32
	_________________ Parts don't make power, engines make power.
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dan0617	Re: 427 update	#10
Senior Guru Tyrone, PA 1260 Posts Member since: 2007/12/30 0:00	Glad to see you are ditching the superram. It would be ok but with your cubes and cam I think the mini will be great. 10.5:1 compression. Going to spray it someday? That compression will be perfect for nitrous. If not, you could go higher than that. Or, you could go down to 10:1, then run a supercharger at about 10 psi and water/meth system in the future. I couldn't imagine the power you would put down at that point. I cant' imagine the amount of power you will be putting down N/A with this new setup!
	Posted on: 2008/8/7 14:10
	_________________ ´89 Vert, 383, 230/236 cam, AFR 195's, LT Headers, HSR intake, 2800 stall, Zex 200 shot, ET Street Radials, tune by me. Runs were with D36 3.07's. On spray, 10.55 @ 132.78, 1.55 60 ft. On motor, 12.08 @ 113.15, 1.66 60 ft.
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jsup	Re: 427 update	#11
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	Picked the heads....The Darts... Flows 300 intake, 215 exhaust
	Posted on: 2008/8/7 17:44
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jsup	Re: 427 update	#12
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	Quote: dan0617 wrote: Glad to see you are ditching the superram. It would be ok but with your cubes and cam I think the mini will be great. 10.5:1 compression. Going to spray it someday? That compression will be perfect for nitrous. If not, you could go higher than that. Or, you could go down to 10:1, then run a supercharger at about 10 psi and water/meth system in the future. I couldn't imagine the power you would put down at that point. I cant' imagine the amount of power you will be putting down N/A with this new setup! I am considering spraying it some time in the future....The bottom end is being built to sustain 1000 HP, so a 150 shot should be no problem...
	Posted on: 2008/8/7 21:56
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Matatk	Re: 427 update	#13
Webmaster SW Chicago Burbs 22805 Posts Member since: 2008/1/7 0:00	This motor is going to be a monster. I can't wait to see it. Matthew
	Posted on: 2008/8/8 0:19
	_________________ 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP
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Randy93	Re: 427 update	#14
Guru Winter Park, Fl 51 Posts Member since: 2008/4/26 13:51	Jeez you TOTALLY screwed up, I think I need to take the motor from you. Just kidding, sounds like a beast. Good luck snd I hope it works well for you.
	Posted on: 2008/8/8 3:50

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LD85	Re: 427 update	#15
Master Guru Indianapolis, Indiana 784 Posts Member since: 2005/9/16 0:00	Quote: jsup wrote: Picked the heads....The Darts... Flows 300 intake, 215 exhaust Been here before, I am a huge fan of buying a bare head and having someone that ports for a living do the assembly & finish work. Spare no expense on a good port job, they usually cost @ $500 for a nice street/performance setup. Darts are known entity in terms of porting results, as is Brodix , Edelbrock Tricks etc. I personally don't trust the "out of the box or as advertised" statements,,, if a head is that good, the mfgr should flow the heads and send you a flow sheet.
	Posted on: 2008/8/8 21:00
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jsup	Re: 427 update	#16
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	Quote: LD85 wrote: Quote: jsup wrote: Picked the heads....The Darts... Flows 300 intake, 215 exhaust Been here before, I am a huge fan of buying a bare head and having someone that ports for a living do the assembly & finish work. Spare no expense on a good port job, they usually cost @ $500 for a nice street/performance setup. Darts are known entity in terms of porting results, as is Brodix , Edelbrock Tricks etc. I personally don't trust the "out of the box or as advertised" statements,,, if a head is that good, the mfgr should flow the heads and send you a flow sheet. I am having the factory clean up the chambers and port the exhaust and intake slightly to get me to the numbers listed, that's what I need for this motor. I don't want to over port them and have too much head.
	Posted on: 2008/8/8 23:40
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c4-zo7-91	Re: 427 update	#17
Senior Guru 312 Posts Member since: 2008/1/6 0:00	hi jon. did you get my pm,s?? i also made a thread here in tech section r.e 8 t/b intake for you!! did you see it ?? thanks glen
	Posted on: 2008/8/8 23:46

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anesthes	Re: 427 update	#18
Master Guru Boston, MA 646 Posts Member since: 2008/6/18 18:02	Quote: jsup wrote: Picked the heads....The Darts... Flows 300 intake, 215 exhaust Gonna need 1 7/8" headers for that combo. In fact, 1 7/8" headers flow 198.40 CFM. Your still gonna have a hair of pressure drop assuming the motor is near 95% VE. -- Joe
	Posted on: 2008/8/10 2:36

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jsup	Re: 427 update	#19
Elite Guru 1778 Posts Member since: 2005/9/9 0:00	Quote: anesthes wrote: Quote: jsup wrote: Picked the heads....The Darts... Flows 300 intake, 215 exhaust Gonna need 1 7/8" headers for that combo. In fact, 1 7/8" headers flow 198.40 CFM. Your still gonna have a hair of pressure drop assuming the motor is near 95% VE. -- Joe Joe, I don't disagree, however, I have a set of custom made EMs, and they are 1.75 inches. I'm using those. Maybe someday I'll change it, but with the budget going through the ceiling, not right now. I have a 3 inch exhaust all the way out the back.
	Posted on: 2008/8/10 3:24
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