sbc heads

[84silverado]

can i tell what kind of heads on my 350 by the numbers on the outside of the heads? the first 3 numbers on the heads are 305 does that mean they are 305 heads or something else?

[J.C.]

gotta take off the valve covers, there will be a 7 or 8 digit number. get them numbers and ya can find out what they are

[84silverado]

damn lol i knew that was one way to do it but i was hoping there was another

[J.C.]

just 4 bolts and maybe a gasket

[old school truck dude]

Wheelin is 50% or more wrenchin, get your sockets out and pop that valve cover. We know where to look to identify these heads, no problem. 

[84silverado]

lol yea it is. but thats just half the fun fixing the stuff. been wheeling with my dad my whole life and last year i picked up my own rig for $350 not running and in pieces. but ill take the covers off and look, itll be easy cause it has those hand twist bolts...but next time i see my truck ill take the covers off and get the numbers

[Jjay78]

the casting mark on the front of the head can also give you some general ideas of the head family, but the only true identification is between the rockers, if ya want i can come up and give ya a hand, your only a couple minutes up the road

[84silverado]

naww its alrite. tommorow afternoon im gunna go take the valve cover off and get the numbers. and it wont take that long i dont even need tools, i have the hand screw deal to hold down my cover 

[84silverado]

ok so, i went and got the numbers off the heads....14022801...if u need anything else to figure out what they are just let me know please. thanks.

[J.C.]

http://www.nastyz28.com/sbchevy/sbch.php

go here and look for your number. i couldnt find it. maybe that 8 is a 3?

1980-84 14022301  305 1.85 1.5

[84silverado]

it acually might be a 3 cause i ran my vin number and originally there was a 305 so they might be 305 heads on a 350.....i guess i have one helluva compression ratio with a 350 thats .40 over with 305 heads lol

[MR NASTY]

Not necessarily depending on the piston.

[MR NASTY]

Run the vin on the block maybe its a 305

[dirtydog]

it acually might be a 3 cause i ran my vin number and originally there was a 305 so they might be 305 heads on a 350.....i guess i have one helluva compression ratio with a 350 thats .40 over with 305 heads lol

i got i .60 over that was decked 15 thou. and 305 head on that which were milled 20 thou. could this b y my factory intake is leaking oil done the bell housing. runs good though

[84silverado]

ive ran the vin before on the block and its a true 350 block out of a 70's camaro actually and the pistons are flat top type.

[MR NASTY]

Well you should definitely have good compression.

[84silverado]

i will have even more if i go through this winter and re-ring it and all that jazz...shes getting kinda tired and needs alil help lol

[old school truck dude]

Well you should definitely have good compression.

Yes but not too good on the flow. Small valves.

[84silverado]

yea i thought about that too. debating on taking the 327 heads i have and going have them worked on and putting them on it...but cash flow not so good right now

[old school truck dude]

All the compression in the world dont matter if ya cant get the fuel through there