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New Builder
https://slantsix.org/forum/viewtopic.php?t=58820		 Page 1 of 2
Author:  superdupersix [ Mon Dec 14, 2015 5:57 pm ]
Post subject:  New Builder
Can any of you fine gentlemen suggest a detailed, step by step, manual or video to guide my son and myself in our head first attempt to build a performance 225? We have a pile of parts and are.....ready..... to go. Thank you, Joe.
Author:  SlantSixDan [ Mon Dec 14, 2015 6:20 pm ]
Post subject: 
Well, it's a very fine idea to get the three books described in this thread.

Hope your pile of parts is thoughtfully selected and not random...were they chosen with a coherent, detailed plan in mind for what you want the engine to wind up doing (and not doing) when it's all built up? What kinds of parts are in the pile?

Hi-perf engine buildup here, high-perf parts and build info here.
Author:  superdupersix [ Tue Dec 15, 2015 4:12 am ]
Post subject:  parts
Hard to tell. They came with the car. He did tell me he followed some NHRA specs. We don't plan to race or anything. My son just loves the car and wants a nice weekend ride, maybe a show or two. Thank you for your information. As for where I was born.... mom never made it to the stadium.
Author:  superdupersix [ Tue Dec 15, 2015 4:59 am ]
Post subject:  parts
Do these books have detailed, any idiot can do it, instructions to assemble the 225? I just bought the Petersons and the Stockel books.
Author:  Reed [ Tue Dec 15, 2015 8:02 am ]
Post subject:  Re: parts
Quote:
Do these books have detailed, any idiot can do it, instructions to assemble the 225? I just bought the Petersons and the Stockel books.

No, because there is no such thing. You have to think of the vehicle as a system. The factory built the vehicle to match the intended use of a daily driver in a broad spectrum of daily driving conditions that were prevalent at the time of manufacture. If you are building a non-stock car you need to know what your intended use will be and then build the engine and drivetrain to match that use.

There is no "one size fits all" recipe to build a "performance"slant six because there are different definition of "performance." Are you building a 1/4 mile drag racing car? Are you building a fun street cruiser? Are you building an autocross car? A rally car? What kind of car is it? A 1960 Valiant coupé or a 1987 Dodge van?

What parts do you have in your pile? What year engine and transmission? What camshaft? What intake? What exhaust? Is the cylinder head stock or has it been ported/oversize valves/milled to increase compression? What transmission? Manual? Three or four speed? What are the gear ratios? Automatic? What torque converter are you using? What ignition system are you using? What carburetor?

These are just a few of the questions that'll need to be answered before anyone can start to give you an answer about what parts to use in your engine.

What are your goals and what parts do you have now? At a minimum, we need to know the model of vehicle, the transmission, the rear axle gear ratio, the intended use of the car, and the specifics of each of the parts in your pile of performance parts.

Depending the application, some racers have done quite well with near stock motors. Other have done quite well with fully customized engines running fuel injection and forced induction. But you have to build the vehicle remembering it is a system designed to achieve a specific goal.
Author:  superdupersix [ Wed Dec 16, 2015 5:54 am ]
Post subject:  new build
Looking to build a '74 Duster for cruising. The parts I have are supposedly for an NHRA spec 225. Of course I didn't purchase them or have anything machined. I need a guide that tells me the step by step assembly of an early '70's 225. I'm bringing the block, heads, crank, cam, and pistons to a local speed shop to clean and check. He'll be able to tell me if I have the right parts.
Author:  drgonzo [ Wed Dec 16, 2015 6:06 am ]
Post subject:  Re: new build
Quote:
Looking to build a '74 Duster for cruising. The parts I have are supposedly for an NHRA spec 225. Of course I didn't purchase them or have anything machined. I need a guide that tells me the step by step assembly of an early '70's 225. I'm bringing the block, heads, crank, cam, and pistons to a local speed shop to clean and check. He'll be able to tell me if I have the right parts.
NHRA Spec could mean a lot of different things. CharlieS has experience there.
I had a SBC NHRA legal stocker cam once and while the lift and total duration were the same as stock, the area under the curve was much greater than the stocker and engine had a very choppy, radical idle and needed plenty of compression and gear.
Here is a stock Chevy 409 cam on the left Vs. NHRA legal version on right.


Image
Author:  Reed [ Wed Dec 16, 2015 7:47 am ]
Post subject:  Re: new build
Quote:
Looking to build a '74 Duster for cruising.
Then you likely don't need or want to put any radical components in the engine. Probably a near stock build with some increase in the dynamic compression ratio and maybe a camshaft upgrade to the 72-80 stock cam (if it isn't already in there) and a two barrel carb will get you where you want to go.
Quote:
The parts I have are supposedly for an NHRA spec 225.
I have no idea what that means. I have never head of any NHRA specifications for a slant six. We could help you more if we knew some brand names and part numbers for the pile of parts you have.

Are you referring to the stock/super stock specifications given HERE?
Quote:
Of course I didn't purchase them or have anything machined. I need a guide that tells me the step by step assembly of an early '70's 225. I'm bringing the block, heads, crank, cam, and pistons to a local speed shop to clean and check. He'll be able to tell me if I have the right parts.
Hopefully the local speed shop guy knows how to put a slant six together. It is a fairly simple engine. But if you need a step by step guide for reassembly it is hard to find one better than the factory service manual for the car.

Before you commit to using anything in the pile of parts, I strongly advise you do do a little measuring and research. Find out the volume of the combustion chambers in the head. Find out how far down in the cylinder the pistons sit at TDC. Find out the cylinder bore. Measure the lift and duration of the intake and exhaust lobes on the cam. Find out what kind of intake and exhaust manifolds and carburetor you have. If you are building a street motor then bigger is not usually better in terms of cam profiles and carburetors.
Author:  SlantSixDan [ Wed Dec 16, 2015 11:54 am ]
Post subject: 
There really is no ready-bake recipe such as you have in mind, and "NHRA spec" does not mean anything. Before you do anything (except ordering those books), best read this thread.
Author:  Dart270 [ Thu Dec 17, 2015 8:15 am ]
Post subject: 
Dear superdupersix,

Welcome to the site! Your project sounds like fun for you and your son. It would help if you could make a listing of all the parts you have, with as much detail as you can. Also, what is your budget to finish this project?

There is an "engine build matrix" thread on this site with several recipes for different kinds of engines. I am not able to find it right now, but perhaps someone else can help with that.

All the best,

Lou Madsen
Author:  ProCycle [ Thu Dec 17, 2015 8:45 am ]
Post subject: 
Engine build matrix:
--> http://www.slantsix.org/forum/viewtopic.php?t=23314
Author:  Dart270 [ Fri Dec 18, 2015 7:05 am ]
Post subject: 
Thanks, ProCycle! I guess I need to use Google to search, since I typed "engine build matrix" into the onboard search function and it did not find the thread...

Best wishes,

Lou
Author:  ProCycle [ Fri Dec 18, 2015 8:06 am ]
Post subject: 
Hey Lou,

I use the Google "site search" function.
It's a great tool for digging stuff out of forums.
Author:  dartsport76 [ Sat Dec 19, 2015 2:33 pm ]
Post subject: 
Quote:
Hey Lou,

I use the Google "site search" function.
It's a great tool for digging stuff out of forums.
Ditto
Author:  Rick Covalt [ Sat Dec 19, 2015 3:34 pm ]
Post subject: 
Is site search a pay function?
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