grumpyvette Posted June 9, 2005 Share Posted June 9, 2005 thanks to CNC BLOCKS N/E I can repost this info have been emailed several times asking what it takes to do the job correctly. First we start with the main line add caps if needed line bore and finish with a line hone. This is a pic of a 010/020 block with 2482 center caps being line honed. Next we blue print bore the cam tunnel for over size bearings or roller bearings as this fixture locates center to center distance of the main line and cam center line and keeps the cam tunnel in line with the main line. This is a pic of a Dart Aluminum block with a .391 raised cam tunnel that we bored out for 55MM cam shaft. From ther we install it in our CNC machine and index it in the machine. And before we do any machine work we probe the block for deck heights, Cylinder locations in X and Y and cylinder size as it tells us how far its of to blue print. This is a pick of a Dart Little-M block being probed out. [ From there we machine the decks 45 degrees from the crank and cam center lines. Next we blue print bore the cylinders or on some of the older 010 blocks that are out of blue print we can bore to the preprobed location Dart block being bored to blue print. Once bore we can chamfer the tops of the cylinders yo a desired depth Next we blue print bore the lifter bores to .875 or .904 or bush back to standard. Dart Little-M block being machined for .875 lifter bores. From there we install the block in our Sunnen Hone intall the torque plate and hone the cylinders to the desired size. Dart Little-M block being honed Finished products. Dart Little-M block This is a pic of a blower engine our engine shop builds for a pulling team. Comments are welcome. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted June 9, 2005 Author Share Posted June 9, 2005 BLUEPRINTING" an engine basically means cleaning up/and minimizing the normal machining clearance and dimensional variations that occur durring mass production, its basicaly done to make sure all the parts function correctly with minimal and EQUAL stress levels you might want to buy and read this http://www.overstock.com/cgi-bin/d2.cgi?...&kid=281466 http://hpbooks.carshopinc.com/product_in...6119779a324aaa8 http://sabooks.carshopinc.com/product_info.php/products_id/46840/06 you really should get these books and read them before going any further, it will help a good deal, while only the basic info is presented it still makes for a good knowledge base, and referance DO YOURSELF A HUGE FAVOR buy these books, FIRST it will be the best money you ever spent, read them, and you will be miles ahead of the average guy. youll save thousands of dollars and thousands of hours once youve got a good basic understanding of what your trying to do! http://www.amazon.com/exec/obidos/tg/det...F8&v=glance http://www.amazon.com/exec/obidos/tg/det...nce&s=books HOW TO BUILD THE SMALL BLOCK CHEVEROLET by LARRY ATHERTON&LARRY SCHREIB http://www.amazon.com/exec/obidos/tg/det...2699400-6836852 . HOW TO BUILD MAX PERFORMANCE CHEVY SMALL BLOCKS ON A BUDGET by DAVID VIZARD . JOHN LINGENFELTER on modifying small-block chevy engines how to build & modify CHEVROLET small-block V-8 CAMSHAFTS & VALVTRAINS BY DAVID VIZARD SMOKEY YUNICK,S POWER SECRETS SMALL BLOCK CHEVY ENGINE BUILDUPS [ http://www.amazon.com/exec/obidos/ASIN/1...1234339-0571324 http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.idealhowtovideo.com/engine.html http://www.amazon.com/exec/obidos/tg/det...ks&n=507846 http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books http://www.amazon.com/exec/obidos/tg/det...nce&s=books Quote Link to comment Share on other sites More sharing options...
Corzette Posted June 9, 2005 Share Posted June 9, 2005 Thanks Grumpy! Oh your rear main cap you gave me while in Okinawa almost three years ago is still holding up fine...now Im going back to Japan.....hmmmmm. Did you say that was a Dart Aluminum block...thats the route Im going when I return. With the raised cam positon a 396 stroker shouldnt be a hard thing to do right? Would it be a better investment to just go with a 400 Small block and stroke it....price wise? Terry Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted June 9, 2005 Author Share Posted June 9, 2005 http://www.worldcastings.com/docs/05_cat_pg7.pdf http://store.summitracing.com/default.asp?Ntt=083111&Ntk=KeywordSearch&DDS=1&searchinresults=false&N=0&target=egnsearch.asp&x=34&y=12 http://www.worldcastings.com/docs/05_cat_pg23.pdf http://store.summitracing.com/default.asp?Ntt=083111&Ntk=KeywordSearch&DDS=1&searchinresults=false&N=0&target=egnsearch.asp&x=34&y=12 http://www.worldcastings.com/docs/05_cat_pg27.pdf now it does not take much thought to figure out that an all aluminum BBC that would weight less than an all iron small block enginewith 80cc chamber heads that flow 400cfm plus is slightly cheaper potential idea now, than the average aluminum blocks that usually run in the $5000-$5500 range, the new block costs $3700, while thats a big jump in price over the similar iron aftermarket big block, block that generally costs about $2000, its still a good deal lighter in weight, and with flat top pistons high compression combos are easy now (11.2:1 with typical flat top pistons on a 496-632 displacement stroker that could easily produce 700-900hp without a domed piston. in fact on the larger displacements a reverse dome is required) Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted June 13, 2005 Author Share Posted June 13, 2005 "your rear main cap you gave me while in Okinawa almost three years ago is still holding up fine" GLAD TO HEAR THAT IT WORKED FOR YOU! Quote Link to comment Share on other sites More sharing options...
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