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My opinion would be to use those heads. Good for the 283 bore size and if they're 80-86 then ready for unleaded. Figure your 58cc head size and a 283 assume flat top piston you'll be around 9.0:1 compression. Should be good running street motor.

Yeah but by the casting # the engine is a 283.... So the smaller cc's would help compresion. And the valve size isn't that bad for the smaller bore. Depending what you want to get out of it...

Did you ck the fit for the 283 intake to the 350? Depending on the year 350 // Later ones had different angle on the 4-center bolts.....

I'm with the Preacher... Plug the hole and run a PCV...

The early Small blocks didn't have bolts or threads, [283-327] small journel stuff. Not till about '68 when they came out with the 350 the put them on all small blocks. Big Blocks always have them as well as all other later GM's

Looking Good........[cl

I saw a old-time cannister vacuum used once... Sorry never got a pic, but it was cool looking

if it's just in the rods.... same Questiion up and down or front or front to back? rod side play should be .006 to .012 [front to back] you can check that with a feeler gauge. up and down should only be .001-.003 and really not be able to feel that play

just where is the play you are talking about? up and down? Front to back? front to back is crank end play that is determined by the thrust brg and should only be .005 to maybe .010 Is it from a stick or automatic?

People on drugs shouldn't use tools......

5:30 in the morning, stopped for gas on the way to work [yeah I drive it to work when I can]. A, guy flys off the main road into the gas station runs out of his car and asked if he can take a pic for his brother because when he see's it he'll "pop a boner":eek:

sounds like a lifter... How's your oil pressure at idle? Maybe one is a little loose or sticky and not staying pumped up?

Keep looking along that bellhousing area for a 7 or 8 digit # probably ending in 638 or 878....

We sell Fed-mog/Sealed power cast-flat tops with rings = 115.33 If the forged pist are new it's a better deal. Make sure the rings you use are new, You Don't want to chance used ring not seating once you've put it all together.

I have had customers Powder Coat the external area of the block/heads With no effect on cooling or power. As far as internal coating there are some oil-shedding products that help the oil flow off the internal parts faster which in turn helps cool the engine also. The oil also keeps parts cool...

Any casting #s from the bell housing area?

As far as what my info reads GM used the same #s for 283 and 327 [both blocks and heads] 283= 56-67 327= 62-67 looks like if it's a 61? probably a 283 If you can check the bore size 327=4.00 283=3.875

What kinda engine you runnin?

Just watch exchanging cranks. A 305 and a 350 use the same casting but are Balanced different because of the difference in piston bore size. You may end up with a vibration. Also if you get a new crank it will most likely need to be balanced.

Agreed.... I always talk my street customers out of porting. You'll never feel the benefits unless you are all out, most of the time it hurts bottom end. A good valve job and some bowl work is all you will need..