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MikeAhrado 08-12-2010 11:09 PM

Help finding a 350 roller block
i feel like a real jack *** but im having trouble getting a list of roller block castings. a list of these would help me tremendously on my hunt through craigslist. much thanks for all the help through all my posts fellas.

cobalt327 08-13-2010 03:05 AM

350cid roller tappet blocks are casting numbers 10243880, 14011148, 14088526, and 14093638.

1986-up 350cid flat tappet (i.e. non-roller) blocks are casting number 10054727, 14079287, 14088548, and 14101148. These flat tappet blocks may have the provisions for a roller cam (i.e. bosses cast in and tapped for the spider, tapped holes for the cam plate, etc.)- but also very well may not be so equipped- but these blocks will have a flat tappet cam and non-roller lifters, no spider, etc. These blocks are fine if you don't care about the roller cam.

There is a flat tappet block and a roller block that both end with the numbers 148. 14101148 is a flat tappet truck block, 14011148 is a roller provisioned block.

Some blocks came machined all the way for a mechanical fuel pump. Others (most) have either partial or no machining done to use a mechanical F/P.

A member here posted this regarding the fuel pump (sorry, I don't recall the name to give proper credit):
"All of the 638's that I've seen (not that many, 5 or 6) have had the pump rod hole drilled.
I've seen 880s both ways, and both 14011148 I've seen were undrilled."

MikeAhrado 08-13-2010 10:36 AM

is the 638 casting considered "good"? i found a complete 638 350 carb to oil pan for 250$ the block is broken by the starter mounting peice..
i also found a 2000 chevy truck with a roller block, the complete motor is being sold for 550$. im thinking about going this route..

OneMoreTime 08-13-2010 11:57 AM

I would avoid any blocks that are cracked or broken in any way..Might be better to get the one that is pretty decent and that just needs freshening..

Just my opinion though


MikeAhrado 08-13-2010 12:03 PM

do u know anything about the 2000 silverado roller 350?

MikeAhrado 08-13-2010 12:05 PM

can this motor be carb'd?

cool rockin daddy 08-13-2010 12:21 PM

Yes, it can be carbed. Any engine can be carbed or injected. That is nothing but the induction system.

hemi joe 08-13-2010 12:25 PM

like i said before,i have a 1987 chevy 5.7L/350 ina caprice block casting #14093683,it is a roller block with roller lifters and full roller set up.i have intake off motor it's a true factory roller motor.but it is in a police car.i don't know if this helps just giving info.....

cobalt327 08-13-2010 01:54 PM


Originally Posted by MikeAhrado
do u know anything about the 2000 silverado roller 350?

You mean other than it should have the OEM roller cam/lifters, a windage tray, 1-pc. rear main seal, powdered metal rods and Vortec heads?

MikeAhrado 08-13-2010 02:05 PM

just found out that its a 3500 4x4 truck! go or no? will i jave to make my truck 4 wheel drive?

FastOrange 08-13-2010 02:09 PM


Originally Posted by MikeAhrado
just found out that its a 3500 4x4 truck! go or no? will i jave to make my truck 4 wheel drive?

Get it, Most likely 4-bolt Main

I just picked a 638 out of a 1990 Burb, 4-bolt main, One Piece Rear, No Windage Tray, Fully Machined for roller AND fuel pump provisions all machined! SCORE!

but the being said, my other 638 Block, 2-bolt Main, One Piece Rear, Windage Tray, Roller stuff is there but not machined, and fuel pump is not machined.

So you gotta watch out, same casting number and two different blocks!

cobalt327 08-13-2010 02:17 PM


Originally Posted by MikeAhrado
just found out that its a 3500 4x4 truck! go or no? will i jave to make my truck 4 wheel drive?

Climb up into the engine compartment and read the casting number off of the rear of the block on the ledge behind the distributor. You will be looking for a number like "10243880" as an example, and there will also be a date code- something like "H 26 7". With that info you can determine what you have. You should see "5.7L GAS" if it's a 350, "5.0L Gas" if a 305 that could have been swapped into it. If the engine is original it will likely be a 4-bolt block.

Now, why would the fact that the engine was in a 4WD vehicle mean that YOU had to make your vehicle 4WD? The engine has the tranny bolted to it- it could care less what goes on from the bellhousing flange back, AFA 2- or 4WD.

MikeAhrado 08-13-2010 02:28 PM

yeah i understand that was a dumb question lol. just excited. going to leave now and go drive this thing. ill post info when i get back

bigdog7373 08-13-2010 03:07 PM

Like i said in your other thread, 1999 and newer had ls engines except for some rare occasions. Find out if it is an ls or not.

lmsport 08-13-2010 03:11 PM

GM made the old and new body style trucks for a couple years, and the old body style ones got the old engine. The 1-ton and Sub were the last to convert to the new body and LS engine.

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