Starting over --- Help with direction!!!
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 241
From: Northern VA
Starting over --- Help with direction!!!
I have decided to pull my engine as it looks like my rings never did seat! I have found what I believe to be a good machine shop that will disassemble, assess my parts and pieces and put it together and dyno it so I know what I am getting this time!!! Parts and pieces are in my sig. The question is: What direction do I want to go?
1) N/A increase displacement with a nasty cam
2) rebuild current displacement (new rings etc...) leave cam and put on the P600B supercharger I have in my garage
3) Find parts for a single or twin turbo kit and get new low compression pistons, blower cam etc...
4) Sell what i have got, buy a Billy Mitchell 427, port the miniram and call it a day!!!!
Btw, I do need to get it through a sniffer test once every two years. I have DFI so I can tune to try and make it through (did this year
)
Thanks, sorry about the long post. I do want to do my homework this year before blowing another 12K!!
1) N/A increase displacement with a nasty cam
2) rebuild current displacement (new rings etc...) leave cam and put on the P600B supercharger I have in my garage
3) Find parts for a single or twin turbo kit and get new low compression pistons, blower cam etc...
4) Sell what i have got, buy a Billy Mitchell 427, port the miniram and call it a day!!!!
Btw, I do need to get it through a sniffer test once every two years. I have DFI so I can tune to try and make it through (did this year
)Thanks, sorry about the long post. I do want to do my homework this year before blowing another 12K!!
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
I really dont see anything wrong with your current setup. It all looks good. I would maybe change the cam to a comp cam in the 230-236 range with .580 lift. The More cam might be a little small for the 383...You could also bump the compression to 10.5/1 with no problems. If you go with more cubes you probably wouldnt pass the sniffer...What do your heads flow and at what lift?
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
Either one of these cams would be a better choice.
Crane cams HdyRoller 109841 234/242@.50 .539/.558 lift
or a little less radical
Comp Cams HdyRoller Magnum 286HR Cam 230/230@.50 .560/.560 lift
or are you running a solid roller? A solid roller in the same specs would be great also.
What is your overall HP goals....?
Crane cams HdyRoller 109841 234/242@.50 .539/.558 lift
or a little less radical
Comp Cams HdyRoller Magnum 286HR Cam 230/230@.50 .560/.560 lift
or are you running a solid roller? A solid roller in the same specs would be great also.
What is your overall HP goals....?
Last edited by chriswtx; Nov 28, 2004 at 08:13 PM.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Heil Bill Mitchel makes a 454 SBC why stop at a 427ci ? If you are serious abut these other options you have listed by all means go for it. If it was me I would save myself 10 grand and just rebuild what I have, you have some good parts there, probably not hurt, put in a solid roller or hydraulic of you don't want to watch the valvetrain for the first year, port those heads and your making some serious power. 
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 241
From: Northern VA
Thanks guys. I'd like to be able to keep up with the seemingly endless number of highly modded C5s around here. I'd like to get up towards 500rwhp and I know it is difficult with emissions!
At this point, I don't trust anyone after a year of getting bent over. I paid for the heads to be ported. I received info from MORE perfomance that the heads flow 280 @ .550 intake and 210 at same lift exhaust but I am going to have them flowed to verify. Assuming that nothing is damaged and just needed freshening up, would I make more power going to a bigger cam like you suggested Chris or stick with the smaller cam and add a power adder like a supercharger? The ATI unit I have will bolt right up and give me around 10lbs of boost.
At this point, I don't trust anyone after a year of getting bent over. I paid for the heads to be ported. I received info from MORE perfomance that the heads flow 280 @ .550 intake and 210 at same lift exhaust but I am going to have them flowed to verify. Assuming that nothing is damaged and just needed freshening up, would I make more power going to a bigger cam like you suggested Chris or stick with the smaller cam and add a power adder like a supercharger? The ATI unit I have will bolt right up and give me around 10lbs of boost.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
If you looking for 500rwhp, go with a dual pattern cam in the 224/236 area and .580 lift. Also while its apart switch to 9.5/1 pistons. And bolt on that procharger you already have. Get some good rings like Child and Alberts and gap them for a supercharged motor. Run 8 to 10psi and you should reach your goals. Definatly double check the flow on the heads. Heads and cubic inches is where you make the real HP. But mainly heads. My heads flow 290 at .600 lift and you can see in my sig the numbers my engine is making. I expect 10-20 more with a few tweeks. I have room for a larger cam but I wanted it to be at least a little streetable. 
Last edited by chriswtx; Nov 28, 2004 at 11:23 PM.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
You could also keep the 10/1 pistons and run 6-8psi of boost instead of the 10psi. I here the P600 has problems with belt slip with higher boost. Just start out by checking those head flow numbers first. You may end up wanting a different set of heads. I perfer the CNC heads right out of the box that flow good. Your goals are definiatly attainable with what you have and the 6-8psi of boost. Just make sure you have a good engine builder and a good tuner. I would hate for you to have to do it again. 
Burning Brakes
Joined: Feb 2003
Posts: 1,246
Likes: 1
From: SouthBend IN
will the blower make the car more difficult to get through emmisions ? Have you thought about a nitrous kit ? Keeps the motor docile and doesn't affect emmisions at all.
Nice car, good luck with the rebuild.
Mike
Nice car, good luck with the rebuild.
Mike
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Team Owner
Joined: Sep 2003
Posts: 88,393
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From: eville in
Originally Posted by mike 1985
will the blower make the car more difficult to get through emmisions ? Have you thought about a nitrous kit ? Keeps the motor docile and doesn't affect emmisions at all.
Nice car, good luck with the rebuild.
Mike
Nice car, good luck with the rebuild.
Mike
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Well.. I would want the Mitchell 427 if money were no object.
My second (and the one I could more afford) choice would be to rebuild what you have. Then add a nice nitrous kit that would add maybe 100hp when you want/need it.
Your engine will probably last longer with NO2 because if your like most folks a lot of times when you want/need it the bottle will be empty.
Empty NO2=saved engine.
The blower will NEVER be empty so you can pump the heart out of your engine at will.
My second (and the one I could more afford) choice would be to rebuild what you have. Then add a nice nitrous kit that would add maybe 100hp when you want/need it.
Your engine will probably last longer with NO2 because if your like most folks a lot of times when you want/need it the bottle will be empty.
Empty NO2=saved engine.
The blower will NEVER be empty so you can pump the heart out of your engine at will.
Race Director
Joined: Nov 2000
Posts: 16,416
Likes: 1
From: NC,USA
Are ya running chrome moly rings? If so... The chrome parts awful hard to seat. I've read ya have to have a 400 grit finish (How to rebuild your small block Chevy HPBooks) to get em to seat out!
I'm hopeful that mine will seat... I went with the chrome moly because all the big million mile diesels run chrome, maybe the chrome moly is a step in the right direction?
I'm hopeful that mine will seat... I went with the chrome moly because all the big million mile diesels run chrome, maybe the chrome moly is a step in the right direction?
Melting Slicks
Joined: May 2001
Posts: 3,270
Likes: 26
From: Winchester VA
Cruise-In V Veteran
Hey Dave,
Glad to see you decided to keep the car!
What machine shop are you using?
And yeah, supercharge. Lots of good reasons you can read about right here in this section!
Glad to see you decided to keep the car!
What machine shop are you using?
And yeah, supercharge. Lots of good reasons you can read about right here in this section!
Thread Starter
Melting Slicks
Joined: Jun 2002
Posts: 2,152
Likes: 241
From: Northern VA
Steve, I was planning on using C&C in Manassas. They have a good rep from all of the "old timers" in the area. The problem is: He'll build the engine and then puts on a carb and carb manifold to test the engine on a bench dyno. I would like to find somebody to that will test the engine as it will be in the car (i.e. with miniram and supercharger). I am just trying to find the time to get started on this thing!!!!
The rings were childs with the top ring being moly.
I keep looking at this Banks TT kit on ebay right now. Man, would that be cool or what?
http://cgi.ebay.com/ebaymotors/ws/e...ssPageName=WDVW
The rings were childs with the top ring being moly.
I keep looking at this Banks TT kit on ebay right now. Man, would that be cool or what?
http://cgi.ebay.com/ebaymotors/ws/e...ssPageName=WDVW
