Search results for query: *

I had a 340 given to me cracked in the same place. I'm not sure why I took it. Figured someone may want it to make something out of.

As others have already mentioned, Id check the balancer. I bought a nice running 70 340 for dirt cheap a few yrs back. Guy thought it was knocking and so it sounded. After further investigation the keyway groove was worn and balancer slid on and off pretty loosely. New balancer and im still...

Personal preference. I have a buddy that races a 3.58 stroke 340 w W5 heads in a Plymouth Arrow that is in the 5s 1/8 mile. Im sure a 360 Magnum could do the same thing. I have heard that 340 bottom ends are stronger than magnum blocks, never measured to say that is fact. If you are building...

Not that you already didn't get your answer but yes they are interchangeable. had a 72 360. Rubber in balancer was bad. Replaced it with one of the later style balancers no problems at all.

Awesome..... Good to know. Thanks guys. I guess ill be scoffing her up.

Anyone have any words of wisdom or voices of experience on the forged eagle 4" 340 main cranks? I hear the cast cranks are a nightmare. I can pick one up for reasonable. Has low street miles on it. Currently std/std will probably polish rite up, .010/.010 at the max. Not sure if I will use the...

Yeah. I believe the 2316s are around 735 grams, can get a hyper piston closer to 475-500 grams. If added with lighter rods the lighter spinning mass is what some people want. I have never had any problems with the heavy slugs and I pound the crap out of my poor little engines.

Machine shop I use gets them within + or - .5 gram. He builds mostly high revving race engines.

KB probably most bank for the buck. I usually run the TRW/Speed Pro 2316s. Just a forged replacement piston for the earlier 340s. They are durable as hell, but VERY heavy. Im a creature of habit. Have built over 20 340s with them and never had any problems.

BINGO..... Thank you..... I have run lots of high compression small blocks on the street. NO problems at all. People don't understand static compression don't mean much. It is the dynamic compression you need to worry about.

I am running a 11.2:1 340 in my Duster. Runs just fine on 93. Has a solid roller cam with a lot of duration. Cylinder pressure is only 160psi.

As rusty already stated, 587s are the same as the 915 Js. I actually have a set of 72 587s off of a 340 that have a J cast onto the underside. Id use them

Personally, Id keep the 273 rockers.

Got a Voodoo 30200741 solid flat tappit in my 9.8:1 aluminum headed 416 .546/.566 243/251 with howards direct lube lifters. Engine made over 525 HP w 540 TQ on the dyno. Mike @ MRL did my heads.

I usually run a little cooler plug like RN9YC. Have for a long time. Was originally to prevent pre ignition in the 10.5-11:1 small blocks at the strip probably no need to run them in a 9.5:1 engine, but I bought a surplus of them so Im using them. They do foul easy.

375-400 hp out of a 340 is easy. I have a (hyper pistoned) 9.8:1 340 w 2:02 J heads. Stock forged crank and rods. Rods were lightened and ARP bolts installed. Some minor port and bowl work on heads. Voodoo 60403 .494/.513 cam Good old 273 rockers. LD340 Holley 750 18 initial w 36 total on timing...

Mine had horrible core shift. Spent a lot of time just getting it gasket matched.

Have seen engines stuck after setting for only 5 yrs. Best of luck.

Not to mention if your valve stems are not perfectly level you can adjust every cylinder individually with the same exact amount of pre loal. I run them on my 340s. Have for years.

Have it sonic checked. If it checks out fine, bore build and enjoy. I know guys running the snot out of 340s .040, .060, and .070 over. As long as cylinder walls have enough meat you will be fine. Every block is different.

71 340 in my panther pink duster is .040 over. Same idea. .030 was just not quite enough to clean it up. Engine is a 10:1 solid roller motor w ported eddys pushing 450 HP, No problems. Engine has been in car for 8+ yrs now

You can use a 273, 318, or 340 forged crank. No need to swap K frame. Just need drivers side 340 mount LOL!! Get it balanced to your new bob weight anyways. 400 hp out of a 340 is easy. Mine current 340 dynoed 398 HP and it nothing real radical. 10:1 compression mildly ported 2:02 J heads, stock...

TDC on the compression stroke both dots should be @ 12:00. Remember that when you drop your dizzy in. see lots of guys go dot to dot and dizzy is 180* off. I think some are looking at the dot on the crank sprocket by the key way. That is not the line up dot, just the dot saying you are on the 0...

I cant see new one that well. Is it clam shelled? Hollowed out 3/4 of the way around. Almost don't look it. May be wrong balancer for neutral balanced engine. And no it will be the same front seal. Looks like old one was sleeved.

Old one is an earlier 360 balancer. New one looks to be a later 360 balancer. Instead of big counter weight they hollowed out the center more. Im not a 360 expert, but i have been told they are interchangeable. Someone more into 360s may chime in.

I agree, looks off. Beers..... Hell yeah....

Mr Gasket sells them. Closest i could get my 416 was 109* Cam is ground on 110* and i wanted to install it 2* advanced (108*) Sure 109* was close and most would have said good enough, but I had the 2* key way so WTH I threw it in and got it centerlined @ 107* (3* advanced) Im happy with that. I...

I have used both 2* and 4* offset keys with no problems at all. Have a 2* in my 416 w cloyes .250 double roller chain and cloyes tensioner, so quality gears makes no difference at all, it is either on or it is off. I personally rather have it a couple * advanced over retarded

Oh yeah. LOL!!!! I should have known. I have pics of a 69 GTS survivor w a blue 340. Blue must be the least common color of 69 340s. I have 2 that are turquoise.

Red for sure. 69 is the odd ball year where they could be red, turquoise, or orange