Lt1 converted to carburator is it possible?

[tupac]

hey guys i have a LT1 of a 96 trans am that i want to put in my 79 pick up i got the block at the machine shop getting it bored out 60 over and my question is if i can put a carburator on it becouse i dont have the LT1 intake and i just like to converted to carburator im keeping the stock LT1 heads the machine shop done a three angle valve job on it already and im getting a 383 stroker kit from mad dog racing all forged 4340 crank 5.700 H beam rods and forged flat top pistons 11 to 1 compression and a magnum 306 cam .555 lift im wonder if this sound right and what else would i need to finish the motor i want at least 400hp on it no less your help will be greatly appreciated thanks

[89IROC&RS]

you can convert any engine to a carb, so long as it dosnt have electronicly controled ignition. im not sure about optispark, but i think that it will run without the computer. someone more up to speed will have to throw that out. but as far as the block and heads, you can throw a normal carb intake on it, and shove an old HEI distributor in teh back, and run it like an older style small block. just ignore all the sensors and such. as far as your 400hp mark, i think your good to go. a 383 with that much cam, sounds like a done deal.

[Bronco2]

Make sure you get a carb. intake to fit the heads. The intake bolts go in at a different angle on 87 and later heads. Also, isn't a 60 over to much? Clean it up with 10 or 30 and save some cylinder wall. The more I look at your post, the less sense it makes. No good machine shop would bore your engine without having the pistons to measure and adjust for clearance. 400 HP. is not a problem with this package, but you need to look at what you use the truck for.

[tupac]

thanks guys for your coments

[FortechMini11]

you won't really be able to run pump gas and bronco is right .060 is a bit much, it should be at .020 over if you want a 383

[89IROC&RS]

.030 for a 383

[1992RS]

I don't think the LT1 had that opti spark thing did it? I think the LT1 was a 350 block with a "special" induction system. And .060 is a bit, well a bunch much. On a virgine block I wouldn't go over .040. Especialy not with the block you have. They have thin cylinder walls to begin with. 11:1 compression is to high also, unless your in one of them states that offer 103 octain, or 98 with additive. With normal high octain gas you'll get crapy performance and a funny look on your face when you try to shut your motor off. Also, with that cam to get 400hp your going to need big valves, 2.02/1.6. And you may have a .555 lift cam, but how longs the duration at .05? Go with something between 245 and 255 degrees. And with your 383 kit, if you're wanting the big hp get the 6" rods, they put less stress on your rotating assy. giving you more torque and HP. Other than that, get your self a good high rise intake for the late model heads and a good carb, 750 would work and your in business.

[FortechMini11]

Originally Posted by 89IROC&RS

.030 for a 383

thanks for the correction

[GTStang]

Like every1 said going .60 over on a never before rebuilt motor is not smart and also any 383 kit you buy is going to come with .30 pistons cause that is how all standard stroker kits are set-up. Also going to longer rods on Chevy stroker I would be looking a 6.2 and the newer 6.3 rods. I personally used Eagle ESP SBC 6.3 H-rods on my Ford 393 stroker motor. 11.1 pistons is not gonna happen with normal octane gas especially w/o fuel injection. LT-1's had optispark the first 2 years only then they went to a DIS system.

Converting an LT-1 to carb you need to make sure to get a carbed intake that works with heads that use center-bolt valve covers cause they have a different angle for the intake bolts. Other solutions are a machined intake or intake manifold adapter plates. As far as the opti-spark you need toss it, that is the easiest solution. Buy a new cam for the engine that was made for standard SBC cause any cam for an LT-1 or LS-1 will not have the gear drive lobe on it to run a standard distributor. Also you need a distributor for a SBC.

[FortechMini11]

those rods are way too long...you're suppose to use the 5.700" rods

[GTStang]

Originally Posted by FortechMini11

those rods are way too long...you're suppose to use the 5.700" rods

LoL the rods are not way too long LoL

[badLS768maro]

ARE YOU CRACKED? All 383s are +.060! DO THE MATH (3.1415*(4.060/2)^2)*3.75*8.

If you use 6.3 inch rods, not only will the wrist pin be IN the ring lands it will probably be above the top of the piston. Anything, above a 5.7 in a street motor is unadvisable by most engine builders for longevity reasons due to premature ring failure.

ALL Lt-1 POWERED CARS HAVE OPTI SPARKS, CAMAROS, IMPALAS, CORVETTES, AND YES, EVEN CAPRICES.

AN Lt-1 INTAKE IS EXACTLY THE SAME AS ANY OTHER SMALL BLOCK CHEVROLET INTAKE LESS THE DISTRIBUTOR HOLE. YES, THEY SELL CARB CONVERSION KITS FOR IT. THEY EVEN SELL THEM FOR THE LS1 TOO! An LT1 is EXACTLY like ANY SMALL BLOCK CHEVY SAVE FOR THE COOLING SYSTEM (REVERSE FLOW) AND THE OPTISPARK, WHICH IS A POS.
YOU DO NOT NEED , A NORMAL SMALLBLOCK CAM BECAUSE THE LT1S STILL DRIVE THE OIL PUMP OFF THE CAM IN THE BACK.

[Hypsi87]

man... simmer down now!! Anyway, just buy the mainafold and stuff to keep it fuel injected. It would be a hell of alot cheaper in the long run. I'm sure a bone yard would have all you need.

[FortechMini11]

no, you're wrong too badLS, look at HOT ROD of January of 2001. it shows you how to stroke a 383 to get 421hp. it says you bore out the block to .030 from 350. according to them, if you start out boring it .060 over, you would later need to sleeve the cylinders and then you'll be screwed for the life of the block. leaving us to the crankshaft. 2.45" mains is whats expected when running the proper 5.700" rods..... Tupac, i suggest you back order that issue of HOT ROD, you may find it to be extremely useful

[Chevyracincamaro]

actually badLS is right. let me rephrase that: the math is correct, with the exception that you dont square the 4.060, its a diameter not a radius. on the other hand, if you use the .030 your only off by about 3.8 cubic centimeters and i dont really think that anyone here can complain about 3.8 cubic centimeters. just sayin is all...