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I am having a carbon problem on my intake and exhaust valves that I cleaned up last winter. It was quite thick on the intake and the exhaust indicating it was running very rich for years. It's all back together now and I'm trying to get it to burn cleaner. It's a 9.9:1 340 with magnum...

I changed out my cam to a Lunati VooDoo 702 cam kit last winter and it seems to have a lot of valve train noise. Its a 340 with magnum heads on it so the rockers are 1.6 ratio. And I'm using small block Chevy style Crane aluminum rockers with Comps guide plates. The intake valve's lift is .525...

I was killing time on Sunday and I read an old thread where RRR recommended a Comp Magnum Muscle cam for a small block. I was just wondering if anyone uses one on their car and how does idle and run? There are certainly cams with faster ramps and will make more power for the same money. It...

Due to some great weather last weekend I have my engine stripped down ready to pull the cam. I think I can pull it out with out removing the grill. It has a XE 274 and it's not working, thanks Comp Cams tech line. What I have is a 340 with a 3.58 stroke and stock rod. It has a measured 9.9...

After reading Rusty's guide to hot rod bliss I'm going to remove my Comp XE274 cam. I can't get it to idle in gear and is way to much cam for my car. Of course my really tight converter has a lot to do with that. I plan on buying a Lunati 262/268 cam this winter along with a better converter...

Just wondering if the Crane Anti Pump up lifters are normally noisy. I have them adjusted 1/4 turn from zero lash on a 24 thread stud. They are quiet when the oil is cool, but the hotter the oil , the louder they get. This is on a Comp XE 274 cam with 16 inches of vacuum at idle in park. I...

Just got my intake back from being machined. Took .004 off the top to the bottom to help seal the bottom of the intake port. Now it sits a little lower and is kinda tight at the block to intake gap. Has about .030 clearance. It's an aluminium intake and cast iron heads. Is this to tight? Or...

Last year I put a Comp Cams XE274 in my car and I'm not real happy with it. It has a rough idle to it, but it has 16 inches of vacuum at idle too. Car has a 340 with Magnum heads and exhaust manifolds.I'm thinking I could install Rhoads Lifters, kinda noisy though. Or I could have the cam...

I have a 340 that's sucking oil out of the lifter valley and I thought I had it fixed last fall. It started burning oil last September again so I just tore it apart, for the 6th. time, and let it set over the winter. I got to looking at it now and measured it and the angles are off from the...

Hey everyone. I have been fighting a vacuum leak on the bottom of my intake. It sucks oil from the lifter valley between the head and gasket on port #3. I've replaced the intake gaskets 4 times this summer to no avail. I had the blocked decked last winter .015 so I could use an MLS gasket...

Can someone school me on milling my intake. I had my block milled .015 last winter to clean it up for a MLS head gasket. Since I got it together I've had a water leak between the intake and the head in the back on the right side. And every once in a while it would burn a little bit of oil at...

I running a Mopar M1 dual plane intake on my Magnum headed 340 right now. And I have a leaky intake gasket that needs replaced. I was wondering if it would be worth the $ and trouble to switch to a Edelbrock RPM dual plane? I would have to remove the heads to be drilled for the LA intake bolt...

I'm trying to tune my 340 after installing a Comp XE274 cam and I'm having a problem setting the idle. Got the timing set at 16* initial and 34* total at 3000 rpm. The idle is 900 with 14 inches of vacuum but of course I have no idle mixture screw control. Took the carb off and most of the...

I got my car going after a taking it apart over the winter. I finally got to drive it for about 20 miles yesterday, after breaking in the new cam. It runs ok but it has a small coolant leak from the pass cylinder head by #8 cylinder, at least that's what it looks like. After I parked it, there...

Got my new issue of Mopar Action today and I've been reading the budget 360 build article. I can't believe how easy it was to make 468 hp on a junkyard motor. And they did it for $2000. I spent $3500 and my engine makes over 100 hp less. Of course mine looks better.:D

Hey everyone! Is there a valve to piston calculator online? I had my distance recorded with my Hughes cam but I switched to a Comp cam this year and in my haste I forgot to check the distance with the new cam before I put it all together. I really don't want to tear it apart and use clay to...

I went through my engine this year checking out the short block. I had .015 milled off the deck so I could use a MLS gasket and replaced the rod bearings. I've been assembling it and I installed the old Hughes cam, an HEH 219/228, and I noticed that the nose had little pits in it on the #8...

I was going through my engine this year and I found this really small imperfection on a cam lobe. The lobe has full lift so there is very little wear and all the rest of the lobes are in great shape. The old lifters all had a good wear pattern but I am still replacing all the lifters with new...

I took my engine out last fall to have the block milled to a smoother finish for a MLS gasket to fix an oil leak. So I'm putting it together and I can't get the oil pump to seat properly. It's hitting the ARP main bolt in two places. The head is hitting and the vertical part of the pump is...

Hey people! My 340 engine, with 800 miles on it, had a really small oil leak between the head and block that it's had since it was rebuilt years ago. Last fall I took the heads off to replace the head gaskets. I was planning to use some MLS gaskets but the deck was way to ruff, but the heads are...

I'm thinking of using Cometic head gaskets to replace the leaking one in my car this winter. Just wondering if the thickness is as accurate as they advertise. I have a zero deck block with magnum heads. So I'm looking at the 4.080 bore and the .040 thickness, for a good quench. Just want to...

I was driving my car last Saturday and I over reved it and it started ticking. I drove it home, about 5 miles, and by the time I got home it was really making a load hammering noise. I took a valve cover off and one of the lash caps came off and was lying in the cylinder head. I removed the...

When I built my 340 I ditched the right angle adapter for the oil filter. I never did like those things, there in the way of the exhaust system. I just have the base plate with the filter screwed on. I have the stock 340 exhaust and I have been using a Wix 51335 filter for clearance. I used...

I took my car out Tuesday and ran around a little bit and on the way home I ran it a little hard. When I got to the stop sign it was running rough and it had a lifter tic. So I babyed it home and took off the pass valve cover and sure enough it had a loose rocker. So I adjust it and start it...

After sitting on a stand for a year and pushing it out of the way for the last time. It's in.

Hi guys. I have a M1 dual plane intake for magnum heads and I was wondering what the threaded hole is for on the side of the water heated choke. Do you just put a plug in it? Is it just a bleeder or does it have a hose that comes off it in some applactions? Thanks, Bob

Hey guys, I have a problem with my roller rocker arms on my magnum headed 340. To set the rocker arms correctly, I either have to mill down the pedestals or leathen the valve with lash caps. I've never delt with lash caps before and was wondering how they stay on the valve tip. Are they pressed...

Anyone know where I could get a jig for drilling magnum heads for a LA intake manifold? How could I figure out the location for drilling the holes? If I mocked up the heads, head gasket, intake and intake gasket, could I use a center punch and mark the holes close enough to line up? Thanks...

Has anybody here used the heavy duty magnum replacement heads. The flow numbers on these look pretty good. I got the numbers from the Hughes Racing website, and with a little grinding they should be a really good street head. I can get a new bare set for $475.00 with shipping. I'm thinking of...

I'm putting together a 340\373 cube motor with iron magnum heads and 69 340 exhaust manifolds and was thinking of a iron 340 intake and a thermoquad carb. Is the performance level of this intake combo good enough to get me to high twelves with good traction? Or should I go to a aluminum intake...