Re: 354 Hemi into 68 Dart GTS. 383
[Re: 68GTS383]
#2889652
02/17/21 03:03 PM
02/17/21 03:03 PM
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Joined: Sep 2003
Posts: 19,641 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,641
north of coder
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first, unless you are planning on aluminum heads, intake, front drive system, etc, those engines weigh a ton. second, there is the rear mounted distributor to take into consideration, firewall clearance issues. will you be able to find an oil pan that will fit, or will you have to fab one ? then the transmission adapter needed for whatever transmission you want to use. it will be a TON of work and not cheap, but can be done. however, for the dollars spent, you may be better off building a low deck stroker. of course if you are talking gen 3 hemi, i have no experience or advice.
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Re: 354 Hemi into 68 Dart GTS. 383
[Re: 68GTS383]
#2889694
02/17/21 04:40 PM
02/17/21 04:40 PM
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Joined: Oct 2005
Posts: 8,914 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,914
Ontario, Canada
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there is the rear mounted distributor to take into consideration, Yes, just like a small block !! The biggest issue will be the width and then headers, etc. Shorties would probably be the best option. Swap the stock front end for aluminum stuff and a BB Chev water pump. Use an aluminum intake and you're reduced the weight significantly down to roughly what a big block would weigh. Certainly no more than a gen II hemi!!.
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Re: 354 Hemi into 68 Dart GTS. 383
[Re: Stanton]
#2889826
02/17/21 09:58 PM
02/17/21 09:58 PM
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Joined: Jan 2010
Posts: 670 Los Osos, Ca
CKessel
mopar
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mopar
Joined: Jan 2010
Posts: 670
Los Osos, Ca
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Sell the 354's to a rod or LSR person. Use the money made to do the 383 or other BB. Maybe even a GEN3 Hemi. Gen 1's are not cost effective.
Carl Kessel
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Re: 354 Hemi into 68 Dart GTS. 383
[Re: elmor353]
#2889880
02/18/21 12:20 AM
02/18/21 12:20 AM
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Joined: Aug 2003
Posts: 43,315 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,315
Bend,OR USA
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Op, I'm sure a stock BB 383 or 440 weighs more than a early 354 C.I. all iron Chrysler fire Power Hemi do. Do some research to make sure though I've own and used both, the bare B and RB blocks are heavier than the bare 1954 to 1958 hemi blocks are. Not so on the heads but I have never measure the actual weight of a stock early hemi motor with exhaust manifolds, motor mounts and so on. I don't remember the advertised HP on the 1956 354 C.I. New Yorker and Imperial motors but I'm going to guess around 275 up to maybe 300 HP. The 1955 331 C.I. New Yorker and Imperial motors had 250 HP advertised and the 1957 and 1958 New Yorker and Imperial 392 C.I. motors where advertised as 325 HP is what I'm remembering now. The "300" cars that had dual quads and solid lifters motors had around 50 HP more than the single four barrel hydraulic lifter motors of the same year had
Last edited by Cab_Burge; 02/18/21 12:21 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 354 Hemi into 68 Dart GTS. 383
[Re: Cab_Burge]
#2889972
02/18/21 10:59 AM
02/18/21 10:59 AM
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Joined: Oct 2005
Posts: 8,914 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,914
Ontario, Canada
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The weight of those things is always the first negative. Everything on those early motors is cast iron. But so is everything on any other "stock" motor. The only thing making those any heavier than any other motor is the larger heads. And even then, they still don't weigh as much as a gen II hemi. But as soon as you start replacing some of that iron, the weight drops significantly. Timing cover, water pump, intake, distributor ... there goes 100 pounds right there. My point is, don't belittle these motors because of the weight. The only real issue with these motors is the cost to build them and in reality, if you did a similar parts swap on any other Mopar motor the difference in cost wouldn't be that much.
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Re: 354 Hemi into 68 Dart GTS. 383
[Re: 68GTS383]
#2893069
02/25/21 03:40 PM
02/25/21 03:40 PM
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Joined: Sep 2003
Posts: 19,641 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,641
north of coder
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any intake can be made to work if enough tinkering is done with it. as to how WELL it will work, that is another matter. this question should be asked over on the racing forum. those guys have way more multi-carb experience than i do. along with carb tuning will be your ignition curve. those two items go hand in hand on how well a combination can, or will run.
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