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hey, any info/tips for building a mild 283 would be appreciated. planning on flattops, performer int, headers, ported 4bbl 305 heads, comp 280h cam. sound all right, or too much cam?

Cam depends on what converter and rear gear you are planning on running,play truck or daily driver?

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72 luv v-8 owned since 16!
240" rear engine dragster
traded the circle track cars for a blown 496 chevy
[color=#FF8000]
29 dodge 4 dr sedan (project)
84 ranger 2wd "tuff truck" with 350 sbc

well, it'll be a street truck... would like to play quite a bit. 2000-2200 stall converter. i've ran a old cam in a 383 before with .496 lift/302 duration, but i've never ran a cam like this comp 280h in a 283 before, wasnt shure how a cam that size would react with the small displacement. people say the 283's will really scream. guess we'll see...anyway truck will be drove about 30 miles a day on open road, sometimes longer trips and through town. 373 gears

going to be a pretty big cam for it,I would suggest a little more stall (2400-2600) if you don't have enough converter you will find out quick,it'll be a dog until the cam comes in.make sure you have a good oil pump and good spark and it'll be fun.If it was me, I would scrap the 305 heads and pick up a set of vortecs for it. Alot better head for very little money.The problem with the 305 heads is they have small valves,any machine work that they might need would almost ofset the $500 for a new set of vortecs.

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72 luv v-8 owned since 16!
240" rear engine dragster
traded the circle track cars for a blown 496 chevy
[color=#FF8000]
29 dodge 4 dr sedan (project)
84 ranger 2wd "tuff truck" with 350 sbc

i think the 280h cam has too much lift for a 283.

im going to be using an isky 278 grind. it got a 278* duration, with a .450lift and a 110* LSA. so i wont need super stiff springs to run this cam and with the tight lobe separation itll lope like a mother.

im also gonna be using a set of 1962 283 power pack heads. i figure if they worked good back then, theyll still work good today. especially and the engine that theyre made for.

id also say that youd be better off with a 4 or 5 speed manual tranny too. the th350 will work, but its gonna rob alot of power that the 283 isnt going to be makin alot of. you know what i mean?

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

Yeah a screamer with a manual is definately more fun. Especially if its carbed and exhausted to breathe.


Bob.

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Current project, 1979 KB Isuzu Ute.

Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.

guess i'll go with the lil lunati I've got. it's in a 350 now, and lopes enough to sound good. makes a ton of low and mid range power, tops out around 5500rpm... how much bigger , if any, should this cam seem in a 283 instead of a 350? I'm assuming that it'll seem like a larger cam cause of the small displacement... everyone says that these engines will really scream due to the short stroke small journal crank... wonder what kindof compression I'm lookin at with flattops in it with 305 tbi heads??

It will depend on what cc the 305 heads are. The stock 283 heads are around 66 cc. Depending on what year and what horsepower rating. With the factory flattops, they come in around 9.3 to 9.5 to 1, depending on the amount od surfacing done to the heads and the deck height of the motor. Some of the 305 heads are 58 cc. This will put you in the land of premium gas. A benefit of the later heads is that they are compatable with unleaded gas. 1 last thing, the 283 is a small bore. You might want to check that the valves on the 305 heads dont hit the top of the cylinder when they open. Depending on the valve size, they top of the cylinder might need clearancing. Relatively easy fix, and worth the trouble to upgrade to the newer heads.

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If you think no one cares, try missing a couple of payments...



FIAA!

SFPP!

It is a dollars and cents decision. More 350 Chevy's made, makes for less expensive parts. 327's before that. Heads usually flow more stock(not always but mostly true) Bigger is better. That is not to say small cu. in. can't be good. You could make a good mpg engine. Small valves, and more but that doesn't sound what you are wanting.


Check you costs before committing, but asking for help is a good thing. Some of the Cam shaft sites give you info on their products. Read what they say the cam will work with too.

Richard

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75 Luv, 350 V8, TH350, Camaro rearend. New 1975 Luv Step side. Stock for now.
Grandmaster of the "Shade Tree" way.. I can't see the yard for all the cars. Come on down and we will sit on the porch and watch the grass grow.

I would stay around 218 to 225 on duration @50 and around or under 465 on lift . Just my .02 . If the heads are 58 cc 's on a flat top 4 valve relief compression will probably be over 10 to 1 .

well first off, the tbi heads arent gonna flow for crap.

second, that lunati cam you have in the 350 will be insane in a 283. you could put a 350 cam in a 283 and itll get a little lope to it. smaller cubic inch engines are more sensitive to camming. that why you see bigblocks runnin insanely huge 305*durations with .750in lifts.

you wnt need alot of cam for the 283 to be a good runner.

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"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

hmmm...now i just have a few decisions to make. having too many trucks can be a bad thing. I now have 2 chevy luv's with enough parts to build one out of them, a 52 and 49 chevy trk to build one from, and a 87 chev trk and 82 chev trk. the roller cammed 305 i've been asking about may go in the 87 and the tbi back on it for a driver. the 82 has my 383, but it needs a trans (in the works right now) and is my weekend driver... and the 283 is prolly gonna go in my luv for a drag truck... too many projects, too little time and money... main priority is getting trans in 82. then probably start on drag truck. 87 can wait...gas mileage isn't that important, right?? thanks for the help.

My trk had a 283 in it when i first built it and it had a 500 lift and 300 dur. Isky cam in it. It had a radical lope to it and it didn't come on until 4200-4400 RPM but i also had a 4spd and a 14# flywheel and it was a little rocket and a blast to drive.

Now people this is not a 350 motor .The small bore and short stroke of the 283 don't give the same numbers.

At 58 cc's and flat tops comp. will be around 8.5 it takes some big domes to get to 11.1 with 64 cc heads.

1.94 valve 305 58cc heads will fit with no clearance problems i used to run the fueler327 heads on the 283s.

The early 305 heavy head is the most durable but the later ones work well and they already flow far better then the best ported power pack head.Oh and they have mounting holes to.

This little motor will be fun to drive when everything is set up correctly witch is if you run a auto trans it is a diff. set up then a manuel trans.

The quick build list is:
305 heads
flat tops
steel shim head gaskets
Edlebrock performer cam-intake package
600 cfm carb
14# manuel flywheel or at least a 10" converter with a stall of 2800-3000(on the 283 this will be in the 2200-2400 but will flash.
Oh and if you want the LT1 Corvette alum heads were 58cc and flow better,they are about 1100 bucks new at your Chevy dealer.

The 283 is a good little motor that will last a long time even while running the snot out of it. Build it and have fun and supprise a few unwary victims on the street.

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1978 pro street step/side 455Buick, 4sp,4.11s, 31/18.5s

what about world sportsman 2s?

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(PLATINUM STREET RODS)
Deming, NM