Combo/Price opinion
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 861
Likes: 0
From: WNY
Combo/Price opinion
Ive been working with a well recommended local builder and it looks like were ready to go on getting a new motor built. I just want some other opinions on it before I give the final say-so.
Having a 383 built - he is doing all the machine work (decking, clearance, boring out, etc) and the assembly.
Here is the basic parts list so far:
remanufactured 4 bolt block
balanced rotating assembly (forged crank/hyper pistons/I beam rods)
comp cam Duration 280/280, Lift .480/.480 is what I believe he wants to put in it
Patriot 215cc 2.02/1.60 64cc combustion chamber straight plug aluminum heads
~ 10:1 compression ratio expected
I have a Edelbrock 650 carb, Edelbrock Performer RPM intake, and Accel Distributor that I am taking off my current motor to put on this.
What kind of power do you think this combination would make? Im hoping to get around 450/450 out of this. Its going to be on premium pump gas. Its not a daily driver so I am fine with that.
The quote he gave me is for 3100 for all parts/labor. Sound about right?
Having a 383 built - he is doing all the machine work (decking, clearance, boring out, etc) and the assembly.
Here is the basic parts list so far:
remanufactured 4 bolt block
balanced rotating assembly (forged crank/hyper pistons/I beam rods)
comp cam Duration 280/280, Lift .480/.480 is what I believe he wants to put in it
Patriot 215cc 2.02/1.60 64cc combustion chamber straight plug aluminum heads
~ 10:1 compression ratio expected
I have a Edelbrock 650 carb, Edelbrock Performer RPM intake, and Accel Distributor that I am taking off my current motor to put on this.
What kind of power do you think this combination would make? Im hoping to get around 450/450 out of this. Its going to be on premium pump gas. Its not a daily driver so I am fine with that.
The quote he gave me is for 3100 for all parts/labor. Sound about right?
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 861
Likes: 0
From: WNY
What cam would you recommend? Im not looking for a well balanced cam through all RPM range
Burning Brakes
Joined: May 2006
Posts: 774
Likes: 1
From: Round Rock Texas
Im reusing whats currently on it - full length headman headers with 2 1/2" exhaust, no mufflers, just resonators in place to dampen it a bit. It sounds really good as is. I thought about side pipes but those will probably be a next year kind of project.
What cam would you recommend? Im not looking for a well balanced cam through all RPM range
What cam would you recommend? Im not looking for a well balanced cam through all RPM range
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
First off, 383's are great SB's. 
Agree w/marz on the 750 cfm recommendation, and if you go with a Holley style carb, you could also upgrade to an AirGap intake.
As long as you burn quality premium gas you could probably take the compression up to ~10.25:1 with that 280* cam, assuming you install the ICL at 106*. ...or you might want to stay at ~10:1 and drop the cam back to a 274*.
I have no personal experience with Patriots and from the "reviews" I've seen, here and elsewhere, I never will. My $.02
Agree w/marz on the 750 cfm recommendation, and if you go with a Holley style carb, you could also upgrade to an AirGap intake.
As long as you burn quality premium gas you could probably take the compression up to ~10.25:1 with that 280* cam, assuming you install the ICL at 106*. ...or you might want to stay at ~10:1 and drop the cam back to a 274*.
I have no personal experience with Patriots and from the "reviews" I've seen, here and elsewhere, I never will. My $.02
Last edited by TheSkunkWorks; Jan 20, 2010 at 03:43 PM.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I would like to try and help you out here by telling you to get another quote from the guy with name brand heads and ask him what parts are going in your motor, are they new or used ?
A 450HP 383ci long block for 3 grand with those heads ? hope you can see what I am getting at. Sorry just trying to help, price out some half decent parts and you can't even buy a short block for 3 grand. Try another shop for another quote too
A 450HP 383ci long block for 3 grand with those heads ? hope you can see what I am getting at. Sorry just trying to help, price out some half decent parts and you can't even buy a short block for 3 grand. Try another shop for another quote too
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Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
with motorhead. Heads are not what I would recommend either. Are the Hyper pistons KB's? If so just go somewhere else for your build, really. Everybody wants something for nothing today. You get what you pay for. A quality build cost money. $3100 is too cheap for a long block build including new aluminum heads. Something is wrong and I would guess low quality parts. If you are really sold on the builder upgrade pistons and heads and get a detailed list of parts with manufacturers. Read here for some info. Take some pointers from what happened to American Psycho in this thread.
http://forums.corvetteforum.com/c3-t...-piston-3.html
Last edited by 63mako; Jan 20, 2010 at 06:59 PM.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 861
Likes: 0
From: WNY
All new parts except for block (reamn) and intake and some other misc parts. (I'll step up to a 750 carb, didn't think the one I have now would quite cut it).
I know this is a budget build - I originally had a set of used vortec heads I was going to clean up and we found what we thought was a good block after tearing apart 3 or 4 other motors. Too bad that didn't work out. Cracked heads and the block was bored .040 already and needed some cleaning, didnt want to risk going .060.
I talked with the builder a little while ago and he did called and spoke with the manufacturer and got a recommendation on the cam, and we are going with that.
.490/.500 112 lobe separation Comp Cam
it is eagle rods and crank with speedpro coated skirt pistons.
anyone have any other head recommendations?
Last edited by Kevins77; Jan 20, 2010 at 07:01 PM.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
I may look into some better heads then. Getting a good deal on them, $699 brand new assembled. Having them pnp/matched, but I could find very few reviews on them. Everything I saw seemed to say they were okay, not great, but can't beat the price.
All new parts except for block (reamn) and intake and some other misc parts. (I'll step up to a 750 carb, didn't think the one I have now would quite cut it).
I know this is a budget build - I originally had a set of used vortec heads I was going to clean up and we found what we thought was a good block after tearing apart 3 or 4 other motors. Too bad that didn't work out. Cracked heads and the block was bored .040 already and needed some cleaning, didnt want to risk going .060.
I talked with the builder a little while ago and he did called and spoke with the manufacturer and got a recommendation on the cam, and we are going with that.
.490/.500 112 lobe separation Comp Cam
it is eagle rods and crank with speedpro coated skirt pistons.
anyone have any other head recommendations?
All new parts except for block (reamn) and intake and some other misc parts. (I'll step up to a 750 carb, didn't think the one I have now would quite cut it).
I know this is a budget build - I originally had a set of used vortec heads I was going to clean up and we found what we thought was a good block after tearing apart 3 or 4 other motors. Too bad that didn't work out. Cracked heads and the block was bored .040 already and needed some cleaning, didnt want to risk going .060.
I talked with the builder a little while ago and he did called and spoke with the manufacturer and got a recommendation on the cam, and we are going with that.
.490/.500 112 lobe separation Comp Cam
it is eagle rods and crank with speedpro coated skirt pistons.
anyone have any other head recommendations?
Last edited by 63mako; Jan 20, 2010 at 07:07 PM.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 861
Likes: 0
From: WNY
I should add that I trust this builder. He does a LOT of dirt track guys and a few of my friends that run those cars recommended him. He also built a motor for my friends 240 that had a cam failure - the guy came to his house to help him pull the motor again and tear it apart to figure out what went wrong and replaced the parts at no cost.
I'll look into the other heads. Anyone else have any suggestions?
I'll look into the other heads. Anyone else have any suggestions?
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I'm with 63 Mako Speedpro pistons will work, I would actually get them uncoated as the coating just wears off, and pretty quick too, this has been my experience, ask your engine builder. Upgrade the heads or you may be sorry
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
I agree with 63mako on the Brodix recommendation for decent heads on a budget, but I'd verify the crank is forged rather than cast.
Assuming you mean the XM278H cam (278°/292° .498"/.500", 112° LSA), which is the closest off-the-shelf Comp SB hyd grind I could find, the bigger exhaust side will likely compensate somewhat for lesser flowing exhaust ports (common is less expensive ones), and together with the wider LSA (good for moderate duration street applications IMCO) it ought to hang on better on top end than the 280H Magnum would have. And, if the ICL is installed at 108° you can still probably push your CR up to ~10.25:1 on quality premium with alum heads.
Assuming you mean the XM278H cam (278°/292° .498"/.500", 112° LSA), which is the closest off-the-shelf Comp SB hyd grind I could find, the bigger exhaust side will likely compensate somewhat for lesser flowing exhaust ports (common is less expensive ones), and together with the wider LSA (good for moderate duration street applications IMCO) it ought to hang on better on top end than the 280H Magnum would have. And, if the ICL is installed at 108° you can still probably push your CR up to ~10.25:1 on quality premium with alum heads.
