Thread: 427 Build what do I need

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Originally Posted by calxen61

I really thank you guys for your help, and yes I did search the site as well as other sites and this has been the best, by the way where is Bay City. I have collected several cars over the years and now retired I want to work on them and build my first BB motor. I got the 427TD for dirt cheap, with overhauled 73 454 heads, but as I am finding out it was not the best thing to get for a chevelle. So I am trying to see what I can salvage from it and move on.

Info you guys take for granted is an education for me.

So Pat said earlier " there two ways to go with this build up take all parts less pistons use a 454 block and build a 427 out of it . or start build with a 9.800 deck block with Gm 454 block you can get to 512 cid with out much work built many of the 489 to510 . i have done many of the 10.200 tall decks but we start at 572to 632 cid then it,s worth the work for things to fit . "

Do both these builds use any of the parts I have, and if I did the first option is there and HP there?

thanks

cal

bay city is past flint north by about 40 miles my shop is in kawkawlin mi that 20 miles north of bay city . the deal is the deck is really not to tall aPontiac is 10.250 .olds is 10.625 all at one time GM did stuff them in a A body car But the 427 tall bbc was never in a car so work needs to be done and you need to run a bbc A body oil pan on any bbc has the cross over is close and the drag link inner tie rods will hit at full lock if not the right oil pan . things you can use out of the 427 tall deck .is the heads . the crank. the rods. timing cover . oil pump drive . head bolts ... but i buy new.. if you used all this and if you had a 396/402 block with 396/402 pistons would end up with a 9.800 deck engine all parts would bolt up to block and fit in the car with not much work if you had a 454 block and used all your parts with 427 .9.800 piston CH of 1.765 for the 3.760 crank you have you would have a 427 car engine..... the bore on a 454 block is 4.250 same as 454 .thats how you get a 427 from a454 . the 396/402 bore was smaller but cranks is still a 3.760 .. not many blocks could be bore to 4.250 bore so just better not think about it very few would take the over bore. you will see i never said a 427 9.800 car block and just told you to look for a 454 block the 427 car blocks are $$$$ less you in the right place at the right time realy do not need the427 9.800 block to build one better save it for the number restoration guys with deep pockets but even the older 454 blocks are of value to. bbc are not as cheap as SBC round here they always costed more for good cores