Are all 350 Chevys mostly the same?

[Rusty Nail]

Interesting. Knowing this information, I guess my question then is what is the difference between all the gen i engines. I know I don't want to try an LS swap or TBI swap, but I am curious whether there is a difference between the 350 engine in a 1967 chevy truck vs a 1978 350 in a truck like mine? were there any performance upgrades done or are they all exactly the same year to year?

No...

I think it was 1967 the MAIN BEARINGS got bigger. Difference between a short or long water pump and the cylinder heads dont have "accessory holes" .... I think 1969 those changes were across the board .. Gotta watch 67-69 careful. Something about deck height or no? I'm not an expert but bearing spacers are sold to run the old crankshafts with....lot easier to find a badass old FORGED steel crank with small bearings. Just sayin, they're cheap.. If you was lookin to build a spinner.

A little spinner..

 

[Rusty Nail]

I strongly advocate the use of #416s on a 1974 350 , I apologize for not being more clear.
Sir.

 

[Blackbeard44]

small journal and large journal is a 327 thing, before the 350 was available.

short and large water pumps were used if it was a truck it came with a long pump, cars were short style.

deck height remained the same, tall deck stuff is heavy duty big block stuff

 

[Rusty Nail]

Oh. I thought a 327 block was the same as a 350 block.. prolly dont know what im talkin about.

 

[Blackbeard44]

it will bolt up the same, but has different bore

 

[Rusty Nail]

Well I decided to determine exactly which casting number(s) I want. Gonna build a tuned port engine..wonder what's in my 88?
Look at this piece of list I found... that's what i'm talkin about @AuroraGirl .


4 or 5 good casting numbers provided for you.
Hope this helps!

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[Ricko1966]

I strongly advocate the use of #416s on a 1974 350 , I apologize for not being more clear.
Sir.

I thought we already covered this between 8am and 1pm noon Saturday.

 

[Rusty Nail]

We did.
I did it on this msb for all to see because I think #416s suck so bad. Gotta run hi-test though.. 1.94/1.60s there is a pic.. Look!

Prolly don't know what i'm talkin about.:
'member?

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*edit
MAYBE... ? I found a pair of #083s! For CHEAP.

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[Ricko1966]

it will bolt up the same, but has different bore

302, 327,350 all the same bore. Different stroke.

 

[Blackbeard44]

302, 327,350 all the same bore. Different stroke.

yuuup i was mistaken

 

[idahovette]

Short water pumps on cars til 69(That's for you,Jeremy). 69 up used long pumps, pickups and trucks didn't get long pumps til 73, I think? Then later on you had the serpentine system with whatever