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What oldkimmer said, before you just give up on the build (BTW its not that wild IMO) get the tune right & look into rhodes lifters, I'm not a big fan of eddy carbs with larger cams, I'd invest in a good used holley 750dp 4779. When you start hopping up an engine & lowering manifold vacuum it...

I know! In what????????

I'll say it, what is the set-up & combo, we are drawing straws here, Is the engine a SB or BB, mild or wild, I wouldn't run a 5/16 line for any mild V8 period, so thats the 1st. that should upgrated, plus if its the factory line its most likely rusty unless its been changed, I do notice your...

So true!!

Other then the larger valve, what made the X a better casting then the J, are you talking "flow" or just structure? I've had both & IMO there was really no difference, they both performed well, My X heads ran better then the Js in the upper RPMs untill i installed 2.02s in a set of Js & never...

If i'm not mistaken the "H" is HP, The "E" is economy, Now thats just a guess, The X/J conversion happened around the latter part of 1970 when the 360 was introduced for the 71 model yr., The X head had the 2.02 valves, The J had the 1.88 (for the most), but its very possible some of the 1st...

Even a small solid comp cam will give you a bit more then the XE284 or 285HL, I stepped up to a solid from comp, It was based on there 520/540 292dur., I had it ground up different from there blanks, it didn't cost anymore, I went with .543/.529, dur. @50 was 250/256 & went with a 108, Car...

The M1 single works great on the 451. You are going to be abit surprized of the amount of torque the 451s have, so going with a single plane isn't going to hurt at all.

Don't you worry about a thing trust me, Those 451 lowdecks are strong runners, very strong, I kicked *** on many for 2 yrs. with mine. As for the cam, no its not to large, I ran the XE284H & it was mild. I ran high 10s in my duster with 906 heads, you'll love it :glasses7:

I beat up on a few 500's with my little 451 with stock 906s & a mild cam, its all in the combo.

Direct port vacuum is on the base plate of the carb in most cases, if its a holley carb, the timed port will be on the left hand side of the metering block, but like mentioned, have it disconnected while setting the timing. Oh while i'm thinking about it, if by chance you ran a jumper wire &...

Not possible "unless" they jacked with it but i doubt it, Now that i'm thinking back, i had the same problem, it was a polarity issue, I'm thinking i had the dist. wires crossed, Now this was running an MSD box with a MP distributor, I couldn't time it for sh*t, had to clip the 2 wire plug to...

I was leading to this, but i figured he went over the wiring, Now having the polarity off will do this, it'll jack the timing way up like your exsperiancing, you need to make sure the wiring is right at the coil too.

Don't know if this was discused in an earlier reply, Seeing its acting the same with another dist. it could be the MSD box or a slipped balancer, If the points act'd the same "timing wise" i'd suspect the Balancer, Did you ever fined TDC to make sure the balancer lines up at 0 on the tab? You...

You are getting very close, From what i heared the engine sounds great, you can try a point distributor for testing, because you shouldn't need any more then 38* total, Now on that distributor, i'm sure its the one i ran on my last 360 & i loved it, remember it is "totally" adjustable, from the...

When you have major ignition issues where its not firing at the right time it'll bleed the lifters down on the affected cylinders, Firing when not on compression stroke & the valve is still open. He was also talking about backfiring through the carb as well, If you read his later reply he...

By judgeing from your earlier reply you tinkered with the ignition & it runs much better, your on the right track, I still stick to it being an ignition issue.

Don't need to get your panties in a wod, there just opinions, no need trashing others opinion just because your trying to get your point across. Could it be the vavletrain, sure it can, but do you realize how much preload would be needed on a hyd. lifter to keep a valve hung open, a good...

Double check your wiring for the MSD, by-pass the ballast resistor, just run an 10g wire to both ends, here is the diagrams, hope it helps...

Go to your nearest auto parts house & get a point type dizzy, set the points & drop it in, hook up the vacuum advance, trust me on this, you will be able to rule out all the electronics you installed, it very simple, you'll need a stock coil though, the dizzys are not exspensive, hook up the...

I'd run 2 elec. pumps or one BIG one, this way you'll never have to worry, unless you only throw a 100-125 max at it, Then i'd run a holley black.

Are you asking or telling, if your asking, I would say no way, you are on the edge on just motor. thats about what a carter street/strip pump puts out, I would run either the mega pump, or run 2 lines, The engine use a black & a blue/red for the nitrous, regulate both & have 2 cowl fuel gauges...

It all depends on what the HP level is on your engine as it stands now, & is the pump able to keep up with the demand, Lets just say your at 425 HP, you shoot 100 through it, can the pump comfirtably feed 525 HP, I'm talking FWHP not RWHP, I'm sure the carter street/strip pump can feed a solid...

What did you only make 1 pass, why would you not try 1st. gear? I'm sure you wouldn't have made the same mistake twice right, your 60fts. will gratly improve leaving in 1st. go back & try leaving 1st. gear, If you did just make 1 pass you can't judge it by that, the car will faster as you play...

I say its fuel related also, A bad coil will act'd up in any gear, its affected by RPM if its going out. Not having full throttle on the carb will not cause it to break up & fall on its face. I had this problem on my 73 swinger after installing a 440, strong through 1st. & most of 2nd. by...

I'd run a pair of 500 eddys, The 390s will work, I'd like the 450s better, but i think there a racier setup. The 500 eddys paired up should work really good.

I don't blame you steve, I wouldn't even think of hacking that car in any way, I'd either get a roller that can be hacked up or just sump the factory tank, You are getting down there on ET where its best to have a "good" fuel set-up, not meadiocre/half-azzed lol.

The best way to run with an elec. pump is a sump, I see cars have hoses running everywhere & the pumps mounted too high & making all kinds of noises, I hear of guys running a helper elec. for the mech., otherwize its just a crossover job when doing it right, I mount mine on the back side of the...

Steve, I run full spools in all my street cars, I had one in my last dart, It isn't bad on the street really, just don't put yourself in a tight position/tight turns, They are alot cheaper then clutch units & alot stronger, They are not hard to push in a straight line, even slight turning isn't...

Nitrous beleive it or not is not as scary to run as some think, once you learn the ins/outs of keeping it safe & don't get too greedy you just can't beat it for the cost too power gains.