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340 street build

Posted By: plumcrazycuda

340 street build - 02/27/17 04:39 AM

Anyone care to share there 340 build?
I like to get 500 to 600 HP out of it.
Its going into a 70 Cuda 4 speed with 3 55 gears
What's the best bang for the buck?
Posted By: RapidRobert

Re: 340 street build - 02/27/17 05:21 AM

4" cast crank (they're cheap these days). EQ mag heads with LA bolt pattern. this would give you an dynamite long block. I would get ahold of Eric Haugland of Las Vegas an importer of them, good guy to deal with.
Posted By: Rob C

Re: 340 street build - 02/27/17 05:50 AM

If your not stroking it, supercharger.
Posted By: Stroker Scamp

Re: 340 street build - 02/27/17 09:52 AM

Pump Gas? Budget?
Posted By: J. Hammer

Re: 340 street build - 02/27/17 10:02 AM

Bang for buck is easy,put a simple plate system on it. No need for a 4" crank or heads or nothing fancy to reach your goal.
Posted By: plumcrazycuda

Re: 340 street build - 02/27/17 03:35 PM

I like to keep it under 6k if possible.
I like to go with aluminum head and a hydraulic roller.
Also keep it on pump gas.

4" crank
Edelblock head $1382
Rod
Pistons
Cam
Roller lifters
Roller rockers
Intake (must be factory height for shaker)
Doug header $655
Machine work
Posted By: Crizila

Re: 340 street build - 02/27/17 04:09 PM

Originally Posted By plumcrazycuda
Anyone care to share there 340 build?
I like to get 500 to 600 HP out of it.
Its going into a 70 Cuda 4 speed with 3 55 gears
What's the best bang for the buck?
Start with a stroker kit for sure with that combo - just from a drivability aspect.
Posted By: Belvedere2

Re: 340 street build - 02/28/17 02:55 AM

500 to 600hp doesn't sound like a budget build to me. My 380 makes 550 and that's with 48* W-2s. Wasn't cheap either and I got a deal on it. 4" crank and some nice heads is what you'll need in a 340.
Posted By: Cab_Burge

Re: 340 street build - 02/28/17 03:20 AM

I'm building a local customer a pump gas 340 stroker motor with a cast steel scat brand crankshaft, Scat I beam rods and SRP pistons with Eddy RPM 65 CC heads (10.2 to 10.6 to 1 comp. ratio)and a Eddy RPM Air gap intake. I'm hoping for and expecting 480 to 500 HP with the local 91 octane non ethanol pump swill at around 6200 RPM with either 830 or 850 CFM carb, I have both sizes in stock. I will dyno test and tune it on the local Studka brand engine dyno, it will go in a 1966 dart GT with a 4 speed also up
Posted By: G-Money1320

Re: 340 street build - 03/01/17 02:50 AM

You could build a nice 416 stroker for under $6000 if you don't use all the higher priced parts. I have a few hundred over $6K but I used the forged crank, H beam rods, Mahle pistons, custom cam and some other goodies. It runs great and has great street manners and has around 600HP.
Posted By: Just-a-dart

Re: 340 street build - 03/01/17 03:48 AM

Get in touch with Rod Bloomer

https://board.moparts.org/ubbthreads/ubbt...nder-heads.html
Posted By: MarkZ

Re: 340 street build - 03/01/17 05:17 PM

Untouched Eddie heads are a bottle neck on a 400+ cubic inch motor and will likely limit you to under 500HP. Add $1k for porting and retrofitting an older block for a roller cam will set you back $1500.

I wouldn't use cast internals to cut costs with your stated power goals either. Plan on spending $8000 then add another grand for incidentals.
Posted By: MI Mopar Works

Re: 340 street build - 03/01/17 11:06 PM

"4" crank
Edelblock head $1382
Rod
Pistons
Cam
Roller lifters
Roller rockers
Intake (must be factory height for shaker)
Doug header $655
Machine work"

I think you are asking for a lot if you want a box stock eddy headed stroker small block with a low profile intake and a hydraulic cam to make north of 500 HP. I assume you want low CR as well for it to run on pump gas nicely? I would expect no more than 450 HP on a realistic dyno with your demands and budget.
Posted By: fast68plymouth

Re: 340 street build - 03/02/17 12:19 AM

I did up a mild set of E heads for a 408 last summer.
Pump gas(I think it was 10.7cr), 265-270cfm heads, victor 340 intake(customer already had it), small solid roller, .600/.600 with 1.5 rockers,(customer didnt want a flat tappet cam, but did want 7000rpm capability)....... Made 540hp...... Don't remember the TQ exactly..... I seem to think it was 520-530tq.
Don't know what the bill was, but I'm pretty sure it was over 6k(parts, machining, head work, assy, dyno).

500+hp from a pump gas 416 with eddy heads and a hyd roller isn't hard at all.........having it "all" done so all you have to do is write a check, and have it end up at under 6k.......that might be harder.
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