best machine shop/porter for 340 j heads

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h340

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does anyone know who is the best porter/head worker for a set of cast iron j heads,(going for that sleeper look) i was lookin at going to shadydell speedshop?? any recommendations




thanks chris
 
i am , of course, partial to our work.....................

What are you looking to do?

What is the complete combo?
 
I'll second Ryan at Shady Dell. BJR on this site has posted some decent sounding results too. Porter Racing Heads in VT is another good place to try. He does some nice Stock Eliminator work. Modern Cylinder Head in MI is also a stong choice. Find someone who you can work with, who has track proven results. Don't base choice on flow numbers alone.
 
sorry took so long to replay i have a 340, stock stroke, forged factory crank, with a forged pistons, h beam rods, balanced. i have j heads. i have an edelbrock rpm airgap, holley 650, mp flat tap. 508 purple shaft, elec. ignition. the cars a 69 dart 4 speed, drag radials. 3:73 gears which will be 410 soon. im looking to run low 11's. id like to do this possibly with a solid cam, flt,or roller. and the max porting on the j heads and airgap. do you think this is possible?? my goal. im in 10th now i want to have the quickest non bottle fed car at the highschool drags my senior year.

also my pistons(speedpro powerforged) are above the deck flat tops, can u tsurface the heads down to make it 11-11:5:1 ???

chris
 
h340 said:
sorry took so long to replay i have a 340, stock stroke, forged factory crank, with a forged pistons, h beam rods, balanced. i have j heads. i have an edelbrock rpm airgap, holley 650, mp flat tap. 508 purple shaft, elec. ignition. the cars a 69 dart 4 speed, drag radials. 3:73 gears which will be 410 soon. im looking to run low 11's. id like to do this possibly with a solid cam, flt,or roller. and the max porting on the j heads and airgap. do you think this is possible?? my goal. im in 10th now i want to have the quickest non bottle fed car at the highschool drags my senior year.

also my pistons(speedpro powerforged) are above the deck flat tops, can u tsurface the heads down to make it 11-11:5:1 ???

chris
Click to expand...

Where are you located.............

Yes the heads can be milled................but we need to know clearence to figure out a few things.........

We have EXTENSIVE back ground in drag racing and road racing............IHRA, NHRA, NMRA, vintage, SCCA, etc.

Please feel free to PM me w/ a number and we can talk about your intent and combo..............

We'll need a few more tuning things from you to include cranking compression (cold), total tip in, jetting, etc.

What are you running now (including DA) and where do you need to be?

Gemme a number and we'll talk..............
 
I dont think you will do it without a few other parts being upgraded. The dual plane intake, the carb, and the valvetrain, possibly the headers depending on what you have, and I'd be looking to swap gears too. Low 11s are not quite that easy on a 340 like you metionned. Also the convertor if it's an automatic.
 
what moper said... both times....lol

you might get to 11's, but low 11's aint happening with the setup you decsribed, no matter what heads you put on there, its all gotta work together.
 
I agree with the other guys as well......You'll need a good converter if it's an auto..something in the 3400 - 3800 stall range and a Single palne intake and a 750 carb. You'd also be better off with say a Comp 294S cam as well (294/294 - .525/.525 w/110 CLA). Do you have to run on pump gas or can you run race gas? As for the heads....since you are in PA I'd defnietly send them to Ryan J @ Shadydell. Also after Ryan gets done with the heads I'd have him spec the cam to go with them that way it is all matched.
 
Just to show so of our late model work..............I do not have any 340 heads uploaded.

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I have a ton more...........

These heads flow 330-ish @ .600 with a 2.00" valve............massive port velocity :twisted:

The people we suggest for a verter is TransKing in Galv.,TX

I agree with letting the headshop pick the cam based upon several aspects.

I'd also work hard on suspension..............you'll need at least a 1.6 60' time

To go super fast at the track MAY mean its chitty on the street; you sure this is a direction you want to take?
 
IMHO, why spend the money porting a set of iron heads.

Get a set of Ede's or other aluminum head and go from there.

Being in PA, Ryan at Shady Dell is very good to work with. Brian at Indio Motor Machine, Indio, CA is also very good but on the other side of the country.

Shipping a set of Iron heads cross country is EXPENSIVE. Looking at about $75 each way, or 3/4 the cost of a set of new valves...

If you go with a stroker, it needs to breathe.
 
Porter racing heads built my 340 which would run the ETs you are looking for with the proper chassis set up. It was never intended to be a street motor though.

I do agree with all of the above though. any of the shop mention can do what you need.

A stroker will make it more streetable but a 420+ cube small block will probably need more air flow then a set of J heads can support no matter who ports them.
 
oh i understand i was seeing if anyone had any experience with the 426 kit i should be more clear, sometimes i am thinking of everything but i dont write 1/2 of it
 
I've thought about this..........what about:

A 340 stroker...........still keep it around a 1.55 rod ratio (or above)..........maybe just an offset grind. I haven't done the math but something like a 360 - 368 ci motor.

Single plane................send intake w/ heads to be worked

750 cfm carb and electric fuel pump.............

Goto electronic ign if not already done.........

Electric fan....

lastly...........suspension suspension suspension..............we'll need 1.4X's as I said before.............

You may want to consider fiberglass hood, bumpers, and anything to shave weight................

As for the gear thing..............we'll have to figure some math out considering your tire size, 833 gearing, and 1/4 times and we can figure for your final drive to RPM.

I think this thread is MORE about your combo more so than about a head-shop.................you might want to kill this thread and re-open it over in the racer's section and just spill the beans about what you have and the time you'd like to run...................

Let those that have years of experience talk openly about how to get there........

As for the 426 stroker...................I'm not a big fan of huge strokers and bad rod angles....................its just an oppinion however.
 
I have to agree with the above reply. Overall combo is where you need to look.
The time sought to run is not to be taken lightly.

On strokers, there great for some things, but not all things. True, bigger may be better, but at what cost and pit fall to overcome? Just to say I have a 426 small block? Naaaaaaaaa
 
You can do a 372" stroker with a 3.58" crank and .070" over 360 pistons or for the same price or maybe less you can do a 4" crank 416.
 
MY 340 has a 3.58 360 crank, 60 over, 378 inch. 242@50 hyd cam. Kid, my engine is choppy as hell! Don't get too crazy if your car will be a daily driver. Be realistic, listen to the guys here, try a target more like mid to hi 12's. Thats pretty fast.
425 HP is easy to get out of a 340 and be reliable. Get a good converter 3.91 gears and a snubber with slicks, you will go!
 
when i had tis combo i was running mid 12's consistanly and completely streetable 340 bored 30,factory steel crank, i beam rods, srp pistons, j heads i ported myself,rpm airgap, carb shop carb, 507-510 hydalic extreme energy comp cam, 3500-3800 convertor, 904 trans with low gears in it, 3.55 gears, compression about 10.1, full wieght 74 duster no fiberglass or racing seats, if you want 11's i put a 125 shot of nos on it and went 11.4o's all day and still streetable. just a combo i had run in the past, thought it may be of some help , good luck :toothy7:
 
i shpuld be running mid 12's already i got one run up at maple grove, my father didnt get the drag radials hott enough spun through first and second (stick car 3.73 gears) and ran a 13.2 so the car has too already be into the 12's, the car isint a daily drive its a car i enjoy taking to cruise night not too far away and haveing some fun with.

no NOS, blower etc. only n/a for me, sorry
 
h340 said:
new idea get a 360 block and do a 426 stroker. any comments
Click to expand...

Find a 340 block and build a 416 stroker,thats what i did car runs 11.0's@120 with a dual plane intake, all motor of coarse,no need for spray here..
 
For good head work w/excellent flowbench to prove it try Angie at Mopar Engines West, she went to mondello's porting school and know's how to get the most out of your heads. Another excellent choice would be Gromm Racing heads, they have a few mopar guys that have proven their technique as well. Either way you can be assured that it's gonna cost some bread, but that was a given when I fell in love with mopar. You can buy the porting templates from MPP and practice on some old smoggers and then if you like the results, J heads done with the templates are pretty safe bet to be 250cfm +. You can get that out of some Eddies with a gasket match, but that is a much bigger investment than the templates, so for a budget conscious guy you could get pretty fair results with the templates if you aren't afraid of a die grinder and are willing to be patient and careful, you can do it.
 
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