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I highly reccomend a fuel psi safety shut off switch, plug it in the fuel supply and if it drops below 5psi wire it to shut down the nitrous noid. MSD also makes a dial operated timing controller that can be wired to work with the N2O, works well. The rule of thumb is 2* retarded per 50hp and...

Cam quest seems very optomistic to me based on my experience with it. I agree on not reaching that hp with that cam. . . without spray

How does it work jetting giant Cheater solenoids down to a 75hp shot? It's advertised range is 150-250hp, I was told that trying to shoot puny amounts through big solenoids can get whacky.

It was on a nova for about 5yrs, sat for 6months then I got the plate and solenoids and got my own bottle, I tested the noids and everything works, hooked the n20 solenoid to a full bottle and it didn't leak any through. I have to get a new feed line though, ine got pinched and sprung a leak.

With that big of solenoid I'm thinking you have a cheater plate, that will hve 64 spray holes in the spray bars IIRC, It's been a while but I don't think a cheater kit can be tuned for under 150hp maybe even 175hp, it's advertised range is like 150 or 175-250hp. Your solenoids MUST be wired with...

Screw RHS heads, all that money and they're still iron and won't let you bump compression past a pump 93 safe 10:1. . . no thanks. 302 heads can easily attain your goal, we are working on a set for my lil bro's SBE 68 318, port matched to 360 gasket size, good single plane intake, mid 500...

You're about right where I'm at with a very similar setup, I've got a converter but not quite enough motor to use it, all I've mustered out of mine is 14.00 at 98-99mph with 2.0 60'. this year I was so close to 13's so many times it's about enough to piss a guy off when 10 of your last 12 runs...

The dual plane thing is indeed a lie, I think it was Hot Rod that tested it against a single plane (SBC of course) and the dual actually did better on a dyno lol wouldn't of guessed that.

I've got a question that's related to this. When you check with clay do you have to do it on all cylinders or can you do it on just one?

Just keep in mind that the tune that made the best power might not be the tune that is the most drivable. The dyno doesn't really tell you how your car will act in traffic or on a day to day basis. Nothing against dynos and I wouldn't mind putting my toy on one, but friends of mine have swore...

I was hoping I'd get your input in here, I've probably read your website 20 times today lol. Do you feel these heads would work good on something like a 10:1 349 strkr? with either the stock intake valve or a 1.88 and with a 1.60 ex along with some mild port work? I realize that's a kinda...

Do you feel they would make 25 more hp than an X or J on a larger cubic inch motor like a 360? Kind of funny how less valve can build more power, who woulda thunk it back in the day lol

This is basically what I was telling him, but he made the point that while it's apart it's a good time to do the little things that don't hurt the wallet much, and being my younger brother I think he's out to beat me lol

I've heard those RHS heads aren't bad, but this is for my 17 year old brother so when I say money is tight I mean REAL tight so we use what we have around or find deals through friends/ swap meets. The plan is to put them on a mild 318 or I'll give him a spare 360 crank and have a machinist...

What about putting in mopar 1.88 intake valves? I assume that can be done and still work good and make good HP, right? We kinda figured, how much money will these free heads end up costing by time he's done with them lol funny how that works. oops, the post above this wasn't there when I...

So here's the deal, we got a free old ram 4x4, had a spare motor in the bed, it's an 87 318, my brother and I pull the valve cover to see if it had 302 heads and yea it does, he'd like to use them on his 318 build but isn't all that thrilled with the 1.78/1.50 valves so he'd like to know if...

I had asked a question like this before about my X heads and the common answer was that it varies from one head to the next as they were mass produced not all are the same, most* people said around 480-500 was the limit on X heads so probably around there for your heads, a machinist/engine...

being a porting greenhorn, I see shiny metal and say "yeap, looks good, they've been ported" . . . . . I don't know a whole lot about porting, this is why I made this thread which I feel has become pretty successful yay homerun! lol

Thanks for the info, unfortunately I have no idea who makes the springs that are on my heads as I bought them complete, I do know he was going to run a .530 solid cam, there's a chance that my heads have already had some of this done as they have had various machine work done in the past, he...

Thanks for the info, I know of a shop near me that can do this so looks like I'll be giving him a call. If you were to pick a number for how much to take off what might you go with?? I realize your number may not be ideal as there are differences from head to head but a ball park would be good...

Well the plan right now is to practice on an old set of heads and if I feel confident enough with what I've done I'll try it on the X heads, if not my dad and I both have heads we'd like ported and a local guy does nothing but porting, we may try to work a deal with him on some work just to know...

I'm planning on running a Comp Cams 507/510 lift that I can't remember the duration of right now, I think 24X. I'm not real sure what the max lift is for X heads, but I think I'm alright with this cam. Not sure tho.

Thanks very much for the info Godfather, and thank you Rob R especially for the really helpful pic kinda gives me something to shoot for. What kind of bits and tools are you guys using? I know there's port and polish kits for sale in jeg's and summit or is it good enough to use some rotary file...

So I've got some X heads on my 360 that I'd like to port this winter when I change cams. I know there's a lot of smart porting guys on here so what do I need to know? Lay out the basics and school me on it, what should I use for bits? Am I looking for perfectly smooth ports or can a little...

adjustable rockers and hydraulic cam/lifters use a Comp Cams pushrod, I THINK the number is 7821-16 I just installed a set, if you do things like mill the heads and run tiny head gaskets this length may not work for you and custom ones may be in order. Speaking of those thin head gaskets who...

Thanks for the responses, I will look into that other crank and see how cheap it is since I have to be all about the budget (whether I wana be or not)

So I've been reading up on building a 451 stroker. I can get a forged 440 crank and 440 rods, pistons I can get off the shelf from KB and the guys at the local machine shop can cut the mains down. My question is do the 440 crank counterweights need to be cut down to rotate in the block without...

I'm changing heads and have a set of MP adjustable iron rockers and I'm asking for a how to on setting these rockers. I have also heard that sometimes you can set up adj rockers to increase valve lift, what's that all about?? Thanks much.

The problem with using the domes that I have is that a few of the walls are ruff at the current .030 bore. I don't have the ability to put up pics but I have had a few experienced engine builders look at it and they said they would expect it to smoke right of the bat and probably tear rings up...

That's what I was thinking but the machinists don't think it will do it, as he told me "well that's only .005 more off the walls" . . . okay bummer I was kind of wondering that, they say they're about 9.5-9.9ish with my X-heads that have been worked on in the past so I don't know what's...