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Re: Get out of it's own way - 340 RR
[Re: dustergirl340]
#771372
08/13/10 09:53 AM
08/13/10 09:53 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Key word is "IF"...I don't care what your engine COULD do, I'm interested in what it does RIGHT NOW. 
oh mine should run fine, but it's not a "stock" unit so I would sweat it too much. 
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Re: Get out of it's own way - 340 RR
[Re: DaytonaTurbo]
#771373
08/13/10 10:10 AM
08/13/10 10:10 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
Arn't KB 243 pistons like 240 bucks? That's cheap for pistons if that's right.
I agree there's nothing better than having the proper compression for your application, however to change pistons the budget goes up quickly. Bore/hone, then of course you will want to take a look at the crank, new bearings, recondition rods, probably some block milling while you are there. Then you're not going to bolt some old heads back on so you're spending $ on going through them, new valve springs/seals at a minimum, etc. I didn't get the feeling the OP wanted to go overboard...
I went the cheap way, honed by hand my original bore 71K mile 71 340 block, reused the rods and did nothing to the block,rods or crank. Bought new rings and bearings and had the gaskets laying around. Like I said it runs great.
All the block work you speak of doesn't always need to be done.
I have rebuilt many motors this way and have never lost a motor other than a cracked cly wall that leaked water.
It helps that I have all the tools to rebuild motors.
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Re: Get out of it's own way - 340 RR
[Re: Challenger 1]
#771375
08/13/10 12:20 PM
08/13/10 12:20 PM
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Joined: Jul 2003
Posts: 4,761
Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,761
Holland MI Ottawa
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Quote:
Quote:
Quote:
Arn't KB 243 pistons like 240 bucks? That's cheap for pistons if that's right.
I agree there's nothing better than having the proper compression for your application, however to change pistons the budget goes up quickly. Bore/hone, then of course you will want to take a look at the crank, new bearings, recondition rods, probably some block milling while you are there. Then you're not going to bolt some old heads back on so you're spending $ on going through them, new valve springs/seals at a minimum, etc. I didn't get the feeling the OP wanted to go overboard...
I went the cheap way, honed my original bore 71K mile 71 340 block, reused the rods and did nothing to the block,rods or crank. Bought new rings and bearings and had the gaskets laying around. Like I said it runs great.
All the block work you speak of doesn't always need to be done.
I have rebuilt many motors this way and have never lost a motor other than a cracked cly wall that leaked water.
It helps that I have all the tools to rebuild motors.
Back in the 80s people did ring and bearing kits on a saturday and were cruising sat night! Dingle ball hone and reassembly. Some even left the engine in the car. Couldnt someone slide in new pistons into an existing and sound block to get the comp up? I knew alot of people who did farmer rebuilds on smallblock chevies and they ran pretty hard. The mopars ran even better. Obviously this is not the right way but many engines ran a good long time without all the machining and new parts. 
Keep old mopars alive.
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Re: Get out of it's own way - 340 RR
[Re: Paul_Fancsali]
#771377
08/13/10 02:47 PM
08/13/10 02:47 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I used to look for b engine Mopars back in the 70s to race with my 340 car. Its not the size that counts its what you can do with it The 340-360 is the little giant killer.
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Re: Get out of it's own way - 340 RR
[Re: Mr.Yuck]
#771378
08/13/10 02:55 PM
08/13/10 02:55 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
I used to look for b engine Mopars back in the 70s to race with my 340 car. Its not the size that counts its what you can do with it The 340-360 is the little giant killer.
I have to say that my 440 stomps my hi compression 340. That's why my wife always drives the 340 when we cruise both cars! 
I like to keep her in my mirror, although she don't agree. 
Here's what the gold car used to look like.
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Re: Get out of it's own way - 340 RR
[Re: RebelDart]
#771382
08/13/10 03:56 PM
08/13/10 03:56 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Man - I got more than I expected ! Let me throw something else into the mix here. IF the engine is sound - what could I expect bolting on a turbo kit ? Considering a total performance rebuid would probably cost as much or more ? I'm serious - what would the car feel like ? It's in great stock condition , currently.
My Keep it stock and in good condition.
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Re: Get out of it's own way - 340 RR
[Re: Mr.Yuck]
#771383
08/13/10 05:01 PM
08/13/10 05:01 PM
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Joined: Sep 2004
Posts: 22,873
Chicken coop
dustergirl340
Chicken Little
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Chicken Little
Joined: Sep 2004
Posts: 22,873
Chicken coop
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Quote:
Quote:
I used to look for b engine Mopars back in the 70s to race with my 340 car. Its not the size that counts its what you can do with it The 340-360 is the little giant killer.
So it's impossible for a 340 to beat a big block? Damn....I guess I need to trade some of my white timeslips in for the yellow ones. 
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Re: Get out of it's own way - 340 RR
[Re: dustergirl340]
#771384
08/13/10 05:09 PM
08/13/10 05:09 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
Quote:
I used to look for b engine Mopars back in the 70s to race with my 340 car. Its not the size that counts its what you can do with it The 340-360 is the little giant killer.
So it's impossible for a 340 to beat a big block? Damn....I guess I need to trade some of my white timeslips in for the yellow ones.
I agree, a hot 340 in a A body can be very quick. 
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Re: Get out of it's own way - 340 RR
[Re: Challenger 1]
#771385
08/13/10 05:20 PM
08/13/10 05:20 PM
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Joined: Dec 2008
Posts: 459
pana illinois
bigblock4x4
mopar
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mopar
Joined: Dec 2008
Posts: 459
pana illinois
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Quote:
Quote:
Quote:
Arn't KB 243 pistons like 240 bucks? That's cheap for pistons if that's right.
I agree there's nothing better than having the proper compression for your application, however to change pistons the budget goes up quickly. Bore/hone, then of course you will want to take a look at the crank, new bearings, recondition rods, probably some block milling while you are there. Then you're not going to bolt some old heads back on so you're spending $ on going through them, new valve springs/seals at a minimum, etc. I didn't get the feeling the OP wanted to go overboard...
I went the cheap way, honed by hand my original bore 71K mile 71 340 block, reused the rods and did nothing to the block,rods or crank. Bought new rings and bearings and had the gaskets laying around. Like I said it runs great.
All the block work you speak of doesn't always need to be done.
I have rebuilt many motors this way and have never lost a motor other than a cracked cly wall that leaked water.
It helps that I have all the tools to rebuild motors.
what is that tool?is it outrageously priced and where do you get one?looks like something me and my buddies could use
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Re: Get out of it's own way - 340 RR
[Re: bigblock4x4]
#771386
08/13/10 06:08 PM
08/13/10 06:08 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
what is that tool?is it outrageously priced and where do you get one?looks like something me and my buddies could use
It's a Sunnen cylinder hone, hand held. Same head that's on a stationary hone. It takes a heavy duty varible speed drill and a big guy like me to operate it. With some practice you can acheive very straight bores. I have a gravity feed honeing oil setup along with a bore gauge to use with it. Have used it a bunch on my blown hemi sleeves when we get a little too lean.
Goodson is one place to get one along with the honing oil and bore gauge.
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Re: Get out of it's own way - 340 RR
[Re: Challenger 1]
#771387
08/13/10 07:18 PM
08/13/10 07:18 PM
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Joined: Jan 2003
Posts: 11,912
APACHE JUNCTION AZ
Joesixpack
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,912
APACHE JUNCTION AZ
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lol i bet is you scaled those two cars the difference would be closer to 800lbs or more, 73-74 B-bodies were heavy...70 a bodies were light weight compared to them....now when the 73 340s came out you got the #587 1.88 heads....8.5 to 1 compression,low lift cam etc...the combo of a low compression,low lift cam,small intake valves, restrictive exhaust manifolds(logs),and big heavy car...slowed them down quite a lot...I would consider an engine change, save the # 340/trans, drop in a 360!, you can find rebuildable core motors pretty cheap, drop in some flat top pistons,bigger cam,more torque,you can add 2.02 valves to the 360 heads which after 71 340 and 360 used the same basic heads anyway(915s&587#). a looser converter ie 2400-2800, some more gear,and there ya go.just depends on your budget and what you want to do with the car. I f you decide to build the 340, first thing you want to do is rebuild the con rods and replace the rod bolts/nuts anyway, get some new pistons, rebalance everything, cut the heads for 2.02 valves,you can get some HP by some bowl work below the seats,your trying to increase airflow from the top thru the exhaust.bigger ports,bigger valves,bigger cam,more cyl pressure,more torque to help move along the B-body...headers, loose convertor,more gear,a good combo is important when you go the small block/b-body route.
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Re: Get out of it's own way - 340 RR
[Re: Paul_Fancsali]
#771389
08/13/10 08:16 PM
08/13/10 08:16 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Stock 340 and stock 440 and everything being equal except the weight and the 340 can and will often come out on top.Look at gross HP of both and they were seperated by 40 horsepower in 1973. the 440 had 280 and the 340 240.
NOT A CHANCE a 340 B-body or E-body will come on top of a 440 B or E. Even in 73. 40 is huge and the 440 has waaaaaaaaaaay more torque. You 340 guys are fooling yourself.
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Re: Get out of it's own way - 340 RR
[Re: dustergirl340]
#771390
08/13/10 08:19 PM
08/13/10 08:19 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
Quote:
I used to look for b engine Mopars back in the 70s to race with my 340 car. Its not the size that counts its what you can do with it The 340-360 is the little giant killer.
So it's impossible for a 340 to beat a big block? Damn....I guess I need to trade some of my white timeslips in for the yellow ones.
I don't think abody is saying that at all. But a stock 340 vs a stock 440 in the same car the 440 wins. A mild 340 vs a mild 440 in the SAME car the 440 wins. Just like if you put a 440 in an a-body and a 340 in the other, they have they same build a little cam, compression, gear, intake carb, the 440 WINS. Jeesh.
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my 74 RR 318 with just headers, intake and 4 barrel carb did pretty good, something must be off! Mine didn't blow anyone away, but would sit you back in seat! Plus i'm doing a 73 340 now and I hope it's not going to be a dog, of course it's a 68 engine 40 over mild cam and other goodies, hope it will start soon 
