I would you guys opinion, advise, comments. I bought a 350 several months ago that supposably has about 2k miles on a rebuild. It was done by a shop in Omaha called Carl Anderson Inc. The receipt from the shop just states "Complete overhaul". Botton line cost was 1047.42. The date was 11/24/84. I tore it apart last night for a look over and here's what I found.

Block 3970010, V0920TMM, 4 bolt, 010 and 020 cast by timing chain sprocket. No carbon build up, no ridge, very noticable cross hatch pattern. No vertical scatches or maring top or bottom.

Crank part # 3941174, cast 307/327 3.25 stroke, obvious signs balancing, drill holes, welding, grinding.

Pistions 7002P .030. I think these are speed pro forged .125 half dooms. no carbon build, very clean, wiped shinny with a little brake clean on a rag.

Cam 179R which I also believe to be speed pro. not sure of the specs. 2 wiped lobes (first and fifth from the rear). Plan on replacing with Comp cams 210-2 .454/.454, 218/218.

Heads 3973487 x. 1.94/1.5. 75cc. Seems to be pretty clean. A few intakes have a little carbon on the stems, exhaust stems a little sooty but no carbon, faces tan.

Rods, not sure, can not find part number. Again obvious signs of balancing, bottom of all rods show grinding marks. I-beam with the letter B cast on the cap. The caps have a raised rectangle (about 1 1/8 x 11/16) flange that has been grinded down, some a lot, some very little.

I plan on putting in a new cam, lifters, gaskets and run it. (fresh 350THM, 3.73s out back)

I welcome your thoughs, good or bad.

 

a couple of things i see:
with a 3.25 stroke crank you don't have a 350.i would measure the bore to see if it is a 307 or a 327.
either way you can clean it up and run it.
the cam you picked is the high energy 260 grind.right?check your actual compression.if it is more than 9.0- you could end up with too much cylinder pressure for pump gas.if you havent bought it already i would consider the xtreme energy 262(307) or 268(327 or 350) grind with your 3.73 gears.

 

As said ... 3.25" stroke ain't a 350 ... check bore ... 3.875" is std 307 ... 4" is std 350.

If ... IF ... If by chance it's a 400 block (4.125" std) ... it'll make about a 353" motor w/ that 3.25" stroke & +30 bores. BTW ... that's the general BxS combo the cup cars run ... hi-rpm HP ... not alotta tq.

Forged speed pro pistons should have number stamped into crown that begin with "L2" or "LW" . For example ... a common speedpro 327 forged piston is P/N L2166NF30 is +30. 2VR, .125" dome, 1.675" CD, +5.3cc DV ... w/ your heads they'd make about 9:1 - 9.5:1 CR depending on gasket & deck height.

179R cam is speed pro ... spec: hydraulic flat tappet 290*/290*, 222*/222*, .447"/.447" lcl 114*... not so far from the comp cam you referenced.

*edit* BTW ... sp also has cam w/ number MUCH like what you wrote ... 1179R is SOLID flat tappet ... 304*/312*, 257*/270*, .493"/.512", lcl 112*.

 

Thanks for the feed back guys. The bore is 4.03. I calculated the CR at 8.8. Should be low enough with that cam for pump gas.

 

The engine is a .030" overbore 327. Not the best heads there. Hard to make compression on these short stroke engines and those are medium sized chambers. Better than thin smog castings I guess. Nice strong 4-bolt main engine with a short stroke crank means RPM potential.

If it was mine I would make a high RPM screamer out of it. Forged pistons and some better heads with a solid lifter cam. You will never make a torquey engine out of a 327 crank but it would be fun to spin it up to high RPMs. You have the gears out in back so why not?

Otherwise you can just build a nice street 327 commuter engine but any 350 or better that is tuned right will blow past you. You could do this but it seems like a waste of opportunity here. Good gas mileage though.

If that is not what you were shooting for you might as well go for the 383 kit and make some torque with it. Either way you have to replace the internals.

Torque or HP - here we go again.

-Mark.

 

Block casting 3970010 suffix TMM is a 1974 truck 350. Date code checks out.

Weird combo, What would lead someone to put a 327 crank and fordged pistons in a 350 block?

Any additonal comments about a 327 crank in a 350 block?

 

The 327 and 350 (starting in '68) use the same block (large journal). Someone just built a 4-bolt 327 engine. That combo with 62-64 cc. heads would make about 11:1. A bit much for pump gas using cast iron heads. Perhaps would be ok using the heads you have.