Hello Stan and welcome to the forum!
Please accept my apologizes for the delay in response!
Life just gets busy sometimes!
:roll:
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My question would be...... Can i build a later model roller block engine without having to put computer wiring in it? Just want an old school motor without the high tech stuff ( computers, sensors, etc. )"
Sure, you can build a late model engine for use in a vintage car, without all the electronics and computers, sensors and stuff.
I'm sure up through the mid-late '90's small block Chevy's you can put a HEI distributor in them, an intake with a carburetor and all that, an old school build.
But, with the advantage of the roller cam and roller lifter advantage regards making power.
Chevy first went to the roller cam in '85, those early blocks (mostly used in trucks and full size cars and up about '89) had roller cams, but flat tappet hydraulic lifters.
Some of them had 'bosses' cast on the top of the cam tunnel, so a guy could drill and tap them, then add the 'spider' pan and roller lifters with no problem.
BTW, Chevy has put out several high power roller cams and heads that are free flowing.
A guy can build a great power house engine for cheap, using Chevy innards.
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Also.. what would you get with a 383 motor with the 400 crank ground .025. If it wont be above 6 grand rpm wise, would it be a safe move."
If you have a 400 crank and needs turning I think it would hold together well, ground 0.025".
Especially since you'll be keeping it below 6,000 rpm (some how!
)!
There are good 400 rotating assemblies new, balanced, ready to go, on eBay for about $750 shipped.
This is crank, rods and pistons.
Now, the reality is, the stock aluminum rods most guys would use (myself included) would really be the limiting factor.
If you jack your compression ratio over 9:1, then rev it up, you'll more than likely lose a rod before the crank will fail.
At a compression ratio of 8.5:1 - 9:1, with a full roller engine (roller cam, roller lifters and roller rocker arms) the right cam, heads, dual plane intake and free flowing exhaust, you can easily push 400 - 425 HP from a 383 that will produce +450 ft/lbs of torque (torque = acceleration).
And, it will run a long time with those stock rods and turned down crank.
That engine will bring a real smile to your face!
There's another member here on the forum, Ed Hurst, he's got a lot of experience building up strokers and these later model roller cam engines.
Hit him up here on the forum, or you can send him a Personal Message or just post to him in "Hot Rodding and DIY Projects" page of the forum.
He'll be glad to inform you on GM parts for the roller cam engine that will produce a lot of power and you can get this stuff used at a wrecking yard for cheap.
Good luck with your build and don't be a stranger on the forum, stop in from time to time and keep us up dated on your roller cam build!