Re: Big Block weight
[Re: GMP440]
#2725560
12/20/19 09:26 AM
12/20/19 09:26 AM
|
Joined: May 2019
Posts: 6,306 nowhere
Sniper
master
|
master
Joined: May 2019
Posts: 6,306
nowhere
|
According to Hughes, that's about 150 lbs, doable? Yes. 670 vs 525lbs, as a note a 400 is at 620.
Stock assembled BB heads are about 60lbs each. 29lbs for assembled Stealth heads/ So that's 60 pounds right there.
Stock intake 40 lbs, aluminum 15 lbs, so that's 25lbs.
Water pump iron 20lbs, aluminum 5lbs, that's 15lbs.
Exhaust manifold 50lbs, headers 25 lbs, another 25lbs off.
We are at 125lbs less right now. If this was a 400 we'd be less than a 340 right now. For a 440 you have to find another 20lbs. Time to dress the block, remove all flash, unneeded bosses, smallest capacity oil pan you can run. Standard oil pump vs HV. lighten the crank, rods, pistons.
|
|
|
Re: Big Block weight
[Re: 2002bluert]
#2725613
12/20/19 12:33 PM
12/20/19 12:33 PM
|
Joined: Jan 2003
Posts: 31,071 Oregon
AndyF
I Win
|
I Win
Joined: Jan 2003
Posts: 31,071
Oregon
|
Does anyone know if you change a bunch of the stock parts on a 440 if you can get the weight down to an all stock 340? Change parts from the cast iron parts to aluminium such as the intake, heads, water pump housing. Sure, no problem. But if you do the same to a SB then it would be lighter too.
|
|
|
Re: Big Block weight
[Re: 2002bluert]
#2725765
12/21/19 02:05 AM
12/21/19 02:05 AM
|
Joined: Aug 2005
Posts: 6,017 Salem
Grizzly
Moparts Proctologist
|
Moparts Proctologist
Joined: Aug 2005
Posts: 6,017
Salem
|
All things equal it's easier and cheaper to get 440 cubic inches out of a 340 with a 4.25 inch crankshaft.
Not to mention ease of parts and transmission options with the small block.
Mo' Farts
Moderated by "tbagger".
|
|
|
Re: Big Block weight
[Re: forphorty]
#2726305
12/23/19 04:21 AM
12/23/19 04:21 AM
|
Joined: Aug 2005
Posts: 6,017 Salem
Grizzly
Moparts Proctologist
|
Moparts Proctologist
Joined: Aug 2005
Posts: 6,017
Salem
|
I seriously doubt that a 4.25 stroke 340 is cheaper to build than a stock stroke 440. Well, how about 10 times cheaper to attain the weight goal? "New forged 4340 4.250" Small Block Mopar crankshaft w/2.00" SBC small journal. Currently available in 340 mains (2.500") $629.00 +shipping"
This probably is way out there. What about going with an all aluminum block, heads, etc? Bill Mitchell sells aluminum 440 blocks for about $6,000.
Or, you can add up aluminum heads, intake, headers and water pump for an RB for Me? Not a big block expert but I'm sure there's 4 grand there?
Mo' Farts
Moderated by "tbagger".
|
|
|
Re: Big Block weight
[Re: elmor353]
#2726371
12/23/19 12:46 PM
12/23/19 12:46 PM
|
Joined: Aug 2011
Posts: 2,871 Pattison Texas
CSK
master
|
master
Joined: Aug 2011
Posts: 2,871
Pattison Texas
|
Just looked at Mancini Racing's website. Trick Flow aluminum heads are $1020.00, Edelbrock Performer RPM intake is $300.00, Mancini aluminum water pump housing is $107.00 and their aluminum water pump is $77.00. Works out to $1504.00. Add a 440Source stroker kit and you have a 505" motor for $4100.00 in parts. Still going to cost you the same to have your block machined whether it's a 440 or a 340. Thats Each for the Trick flow Heads
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
|
|
|
Re: Big Block weight
[Re: CSK]
#2726395
12/23/19 02:17 PM
12/23/19 02:17 PM
|
Joined: May 2019
Posts: 6,306 nowhere
Sniper
master
|
master
Joined: May 2019
Posts: 6,306
nowhere
|
Still need pistons for the stroked 340, maybe even different rods, I dunno, Muscle Motors has a kit with a 4.25" stroke 340 crank and all that is replaced, $3300 for just the rotating assembly. Mods to the oil pump as well. Like to see a link to the 4.25" crank mentioned. Not to mention stock iron 340 heads are going to be a big cork as will the stock Iron intake and exhaust manifolds. So no, a stroked to 440 cid 340 isn't cheaper, much less 10x. Unless you just want to be able to say it's got 440 cubic inches, otherwise it'll be an exercise in wasting money. You will have to do all the mods we are discussing on the RB 440 to make that LA 440 worth the effort.
Stealth heads are $500 each, FWIW.
|
|
|
|
|