416 build help
#1476653
07/30/13 10:00 PM
07/30/13 10:00 PM
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Joined: Jan 2003
Posts: 1,721
Eugene, OR
FuryBoy
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 1,721
Eugene, OR
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I want to build a 416 stroker for my '70 challenger that will run solid low 12 second passes with 3.23 gears and an A/C. This is a street car that gets ran at the strip 3-4 times a year. I want the motor to last. What the dyno says doesn't really matter to me.
I have a '68 340 block that we are going to align hone the mains in. It's going ,040 over as long as it passes sonic checking.
I was figuring on using the lowest comp Icon pistons that I can get because this is a pump gas street car that will be took on a yearly 1000 mile road trip.
Thinking SCAT I beam rods
Does MP still have the best bargain on cast 4 inch stroker cranks? Or is there a better option now?
Hopefully I'll be able to internally balance this rotating away.
I plan on buying some ported Edelbrock heads. I know there are high flowing heads now, but I want to be able to use stock rockers, intakes and headers.
Cam will probably be from Scott Brown.
Induction will be my edelbrock performer RPM and my Quick Fuel 780 for now.
Hooker Super Comp headers with a 2.5 inch X pipe exhaust. I will probably put TTI headers eventually.
Car currently weighs about 3400 lbs with iron headed 360 without AC pump and condenser. I have a 9.5 inch SMR converter in a 727 with
Last edited by FuryBoy; 07/31/13 11:46 PM.
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Re: 416 build help
[Re: FuryBoy]
#1476654
07/30/13 10:46 PM
07/30/13 10:46 PM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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If it were me I wouldn't skimp on the parts. Run a forged crankshaft and H beam rods. The Scat cast and I beam rods are good pieces but I think they'd be the sketchiest part of the build for the power output you want. For the heads, if you want stock rocker layout, the 220 cc Airwolf (?) heads are probably the best bet unless you can get some W5's fully ported and I'm not for sure if they use stock intake rockers or offset. I'd rather see some fully ported oval port Indy heads with some T&D rockers. Stay far far away from the Indy rocker arms, they're junk. Don't use their pushrods either. I'm not sure what your elevation is but I'd shoot for 11:1 or at least the high 10's for compression. A camshaft in the 250ish range @.050" lift, solid flat or roller would be my choice. Solid rollers have their own reliability issues on a street car, make sure to get pressurized oiling to the roller bearing. Using a hydraulic roller causes some pretty severe pushrod angles due to the taller lifter and shorter pushrod. Stud the mains, prior to align honing. I think you could reach 11's easier with lower gears and a less powerful engine, so you could go that route and put an overdrive transmission in it.
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Re: 416 build help
[Re: cudadoug]
#1476657
07/31/13 09:40 AM
07/31/13 09:40 AM
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Joined: Aug 2006
Posts: 2,141
junction city oregon
viperblue72
top fuel
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top fuel
Joined: Aug 2006
Posts: 2,141
junction city oregon
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To run solid low 11s with 3.23 gears and probably a tight converter is a tall order. With what you plan, I think you will end up solid mid 11s.
If you really want low 11s, get a bigger cylinder head, maybe an indybrock or w2, and a mild solid roller. Yes they are fine on the street and have better vacuum and much broader power curve.
I wouldn't run a cast crank, or i beam rods. The block is fine at that level. I wouldn't bore the block anymore than necessary.
Last edited by viperblue72; 07/31/13 09:41 AM.
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Re: 416 build help
[Re: draginmopars]
#1476663
08/01/13 01:09 AM
08/01/13 01:09 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Quote:
I was thinking about going forged with H beams but won't the stock block be the weak point? And the Air Wolf heads look great but no one has received theirs yet.
I will either be going Hyd flat or Hyd roller on the cam most likely a 245-250 dur @ .050 cam and comp pro mag rockers.
I actually have a 3.91 sure grip chunk I swap in the rear occasionally.
The stock block will handle 650hp as long as you
dont detonate it... the H-beam are a good choice,
I cant say is is the best price on a 4" crank but
dont cheap out or you might be spending more to get
it into shape to use...also dont just use OOTB heads...
for a few bucks(or do it yourself) I would at least
pocket port them and check the valve job... you
already have in your mind 11s.. like your gonna be content
at that... your better off spending a little more
now then doing it again... I know.. been there
EDIT
One of the guys here BKE (I think thats the letters)
sells SB stuff and from what I hear has good prices
for a quality product
Maybe you are thinking >> BPE
Bloomer Performance Engineering
LOL... yes I was... thanks... I was close
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Re: 416 build help
[Re: MR_P_BODY]
#1476664
08/01/13 01:29 PM
08/01/13 01:29 PM
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Joined: Sep 2007
Posts: 35
Minot, ND
darndart
member
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member
Joined: Sep 2007
Posts: 35
Minot, ND
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Be carful when mix matching rotating parts. My bro-in-law had a bad experience when putting his 408 together. He bought an Eagle cast crank, SCAT H-beams & Probe dish pistons. He had the rotating assembly balanced, started to assemble his short block & discovered the bottom pad of the pistons hit the counter weights of the crank! So he had to have the pistons machined/clearance and the rotating assembly rebalanced!
73 Dart Sport 340, 410ci, Indy 360-2 230CNC.
72 Demon 340 4-speed
01 Ram Quad Cab
89 Mustang LX Boss 331,C4,HP76mm turbo, FAST EFI
86 Mustang GT 5.0 AOD
82 Capri RS 306, Fox Lake Stage 1 TW, N41, T5,etc.
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Re: 416 build help
[Re: darndart]
#1476665
08/01/13 01:58 PM
08/01/13 01:58 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Your plan sounds solid. Here's what i'd do: 418" Forged crank (BPE is my choice) SCAT I beam's Forged piston, aim for 10:1 Edelbrock heads, have them checked and springs matched to the camshaft Cam should be 235-245@.050 for a nice street car. Air Gap and your carb. This combo should run 11's with the 3.23's i'd bet.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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