Engine help

[Franks 72]

Just had our 72 Suburban 350 engine rebuilt and would like
some impartial comments on what we have. Just wondering if anyone could help identify what we have and what kind of HP we can expect. The old cast heads were badly erroded and we opted to replace. Block was a casting 3970010 (now .030 over) ,new pistons are "flattop" , heads have a casting # 14120188 ,cam is a CCS-2 ( Melling ? )
Block mating surface was machined . Intake will be the original cast iron with a 4 bl carb . Ignition will be non points (transistorized ) with matching coil .
Exhaust will be original "Ram Horn". This will be a weekend driver maybe pull a small RV trailer (not expecting a 1/4 mile record setter 3.73 rear end)
Any ideas on what we can expect for HP or torque?

[geezer#99]

You have a 'stock as a rock' 350 which will produce likely the same hp and torque as your original motor.

[Franks 72]

Thanks for the speedy responce ! Any idea what era the head 's are from?

[storm9c1]

I agree. Cam specs are here:

http://www.mellingengine.com/Portals...ifications.pdf

You may get some more power than stock due to the additional bore and tuning. The advertised 190hp 350 crate engine that GM sells can be pushed closer to 300hp with a cam change, intake, carb and ignition.

[GASoline71]

I bet it will pump out 200 to 225 hp. .030 over with flat top pistons will gain a little.

It will have good low end TQ to get the heavy rig rollin'.

Gary

[storm9c1]

Originally Posted by Franks 72

heads have a casting # 14120188

Do you possibly mean 14102188 ???

14102188 -- that's a 350 1988-1993 EFI (Swirl Port) head.

[Franks 72]

My apologies 14120183

[GASoline71]

No the best head design, but for a stock rebuild they will do okay. They were designed to work with the TBI fuel injection system.

Gary

[Franks 72]

Perhaps in the future we will tinker some more with it.My son (who is funding the rebuild) didnt want a lumpy idle so we just opted for a close to stock setup. Sounds like it will be a good combo for our needs. Thanks for your help !

[GASoline71]

Nothing wrong with a stock engine. As much as I love snotty cams, 3" exhaust and loose TQ converters and all that.

Nothing sounds better than a newly broke in stock SBC just purring away at idle through a decent exhaust system.

Sounds like... victory!

Gary

[Marv D]

Ya know,, every where I look I can't find that head casting #

yes the 14102193 is common late model light weight castings

BUT this is a 14120193 This is quite a mystery!

[storm9c1]

Yeah, strange!

I agree. I found the same info you did with the 20 versus 02. I even looked for both 183 and 193 since my eyes see it as either number depending on the time of day. LOL.

I was going to pull out my books at home. If is isn't in there, they don't exist! But that means I have to remember to look... and my brain has been fried after work recently. Heh.

[ka_jd7and1]

I Googled it and a couple results came up... Mercruiser 5.7L marine head.

[storm9c1]

Originally Posted by storm9c1

Yeah, strange!

I agree. I found the same info you did with the 20 versus 02. I even looked for both 183 and 193 since my eyes see it as either number depending on the time of day. LOL.

I was going to pull out my books at home. If is isn't in there, they don't exist! But that means I have to remember to look... and my brain has been fried after work recently. Heh.

Yep, not in my books. I'm leaning toward a marine head too, but that doesn't feel right. It just could be too new for my books.

EDIT: they could also be run-of-the-mill replacement heads, which would explain the the later part numbers.