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Old 08-31-2002, 05:40 PM
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Post 400 SBC machine work

I'm building my first engine, a 421 sbc with the help of a few knowlegable friends. I plan on putting some serious cash into the motor to produce 650 hp but was kinda shocked with the estimate I got back from the machine shop I sent the block to. The block is very clean and can easily be cleaned up to .030. It is a 2 bolt that will be converted over to Splayed main caps. Plan on running Eagle Crank with a 3.750 stroke and 6" Rods with 11:1 compression. JE Pistons etc. I got a price of $2000 - $2750 plus any parts. Am I getting ripped or is it just the price to play? <img src="graemlins/spank.gif" border="0" alt="[spank]" />
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Old 08-31-2002, 05:51 PM
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I got a bridge in the desert I'll sell ya.lol.
Seriously though. If all your getting is block work done, your getting stabbed.
Im not sure about the cost of the splayed main caps, but around here at a pretty reputable shop, I got a 350 hot tanked, cleaned, bored 030 over, freeze plugs installed and cam bearings installed for around 200-250 bucks(been a while). Id check around. If thats block work alone, I think your gettin bent over without the reacharound. <img src="graemlins/pain.gif" border="0" alt="[pain]" /> HG
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Old 08-31-2002, 06:02 PM
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Need4Speed: Have you price shopped the other machine shops in your area? I agree with HM that your getting hosed. I had my small block Chevy machine work done for $300.00 that included the installation of new cam bearings and brass freeze plugs. You have other options. Have the block cleaned and bored, then find someone who can do your assembly, if your not confident to do the assembly yourself. Don't discount a local high school auto shop. Check around, some of these teachers have been doing engine assembly, since three days after God was born. Offer them your engine assembly as a class project and make them a donation. You might be surprised. Whatever you do, remember to have fun, that's what we do...
FastGo
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Old 08-31-2002, 06:47 PM
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i got all head work (2.02 and 1.6 stainless valves fully ported)block work,internally balanced,kb pistons,motor ready togo minus carb and external parts done for 2000.00 so i would say ya your getting it hard
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Old 08-31-2002, 07:29 PM
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The machine shop I have been using lately charges... (give or take 5%)
Bore and hone with torque plate $165.00
Balance complete rotating assem. $135.00
Install cam bearing $ 30.00
press piston pins $ 65.00
If needed..true the block about $100.00
If needed.. Line bore about $110.00
Mill the heads $65.00
Don,t know what the cost is for rebuilding or resizing the rods are. They would probably get $800.00 to a $1000.00 to assemble the engine. If you got a good manual and you want it done right put the money in your pocket and do it yourself.
If you get stuck on something ask on this forum for help. Reading these post I've seen a lot of guys that know what their talking about and could help you thru any problems you may come up with.
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Old 09-01-2002, 05:33 AM
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Thanks for your help guys! I've decided to go pick my block up Tuesday morning and bring it to a shop that doesn't require a customer to bring their own vasoline!
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Old 09-01-2002, 05:40 AM
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That price must be for the complete job? assembled shortblock!
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Old 09-01-2002, 05:59 AM
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Roy - Nope, just the machine work. We are doing all the assembly work ourselves!
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Old 09-14-2002, 09:46 PM
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It is a little pricey to convert one to splayed caps, the caps (just the center ones) should run around 150 bucks.You will have labor for fitting the caps to the block, drilling the outer mounting holes, roughing out the caps via align boring, and then finishing them with align honing, (preferred method is to finish hone). Also a 400 has to have the rear seal cut if it is align-honed. I used to set these up myself, and to do a nice job, IE not sinking the crank too far in the block, fitting the caps properly, not punching the splayed bolt holes into water, ect. What I'm getting at here is there is alot of differences between some shops, i'd rather spend a little extra and get competent work, but you probably should pay around 550.00 to 750.00 for the caps and all related machining. add 125.00 for a comp bore and hone with plate. 30.00 or so to clean block. 40 bucks for cam bearings. 80 to square deck it.
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