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Top Fuel Hemi similar to OEM Hemi?
#690756
05/06/10 09:43 PM
05/06/10 09:43 PM
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Joined: Jan 2006
Posts: 957
Heart of Ohio
4boxers4
OP
super stock
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OP
super stock
Joined: Jan 2006
Posts: 957
Heart of Ohio
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In a discussion about the hemi used in top fuel, my friend said no parts from an OEM Hemi will 'fit' the Top Fuel Hemi. I thought that some would (but obviously for fitment only). Am I wrong? Anyone know specifics or have links to cool sights on this topic, or on what will or won't fit, please? Thanks! 
Persistance is omnipotent
Durability Engineer, Chair and Couch division...
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Challenger 1]
#690759
05/07/10 07:02 AM
05/07/10 07:02 AM
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Joined: Jan 2003
Posts: 10,731
North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,731
North Dakota
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Depends what technology level you are talking about. 40 years ago I would venture a guess that almost everything fit as the only components available were stock parts. As time went on and the aftermarket started producing parts, I would think there would have been less and less compatibility with OEM. Just my  .
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: 6PakBee]
#690760
05/07/10 07:33 AM
05/07/10 07:33 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
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Cincinnati, Ohio
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Quote:
Depends what technology level you are talking about. 40 years ago I would venture a guess that almost everything fit as the only components available were stock parts. As time went on and the aftermarket started producing parts, I would think there would have been less and less compatibility with OEM. Just my .
exactly...
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Dodgem]
#690763
05/07/10 11:36 AM
05/07/10 11:36 AM
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Joined: Jul 2003
Posts: 4,776
Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,776
Holland MI Ottawa
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Even though the Top fuel hemis are not 100% intechangable with a passenger car hemi those engines share a hell of alot more with the street hemi than with an LS-6 454 or a 427. Ask you buddy how come the Chevy top fuel cars do not run a variation of a 427 or 454.
Keep old mopars alive.
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Dodgem]
#690764
05/07/10 11:58 AM
05/07/10 11:58 AM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
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master
Joined: Nov 2004
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Sk. Canada
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Quote:
Crank shafts and some rods depending if the use 2.375 or 2.20 bearing rods. heads are the same bolt pattern and so on.
The question I would pose is "What parts WON'T bolt on? Pistons are different..... thats about it. Not long ago they specified stock intake rockers that would break off in a backfire or hydro lock condition.
Its a bored and stroked 426 hemi made out of aluminum.
What dimensions on the block won't allow stock components?
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: RemCharger]
#690765
05/07/10 12:30 PM
05/07/10 12:30 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
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Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
Crank shafts and some rods depending if the use 2.375 or 2.20 bearing rods. heads are the same bolt pattern and so on.
The question I would pose is "What parts WON'T bolt on? Pistons are different..... thats about it. Not long ago they specified stock intake rockers that would break off in a backfire or hydro lock condition.
Its a bored and stroked 426 hemi made out of aluminum.
What dimensions on the block won't allow stock components?
No way are they running stock rockers,  with Nitro? Heck even the heads are different that won't allow stock rockers. BTW a new set of rockers are close to 5 grand, there not stock.
And the OP didn't say anything about chevys...
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: RV2]
#690767
05/07/10 01:02 PM
05/07/10 01:02 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
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Cincinnati, Ohio
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Quote:
Its not stock rocker arms they are running but on the exhaust side they do not run roller tip rockers.
That's correct, they have to be really strong to open the valves with nitro. And do you know what would happen if the rocker"broke off"?
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Runner2go]
#690770
05/07/10 03:39 PM
05/07/10 03:39 PM
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Joined: Mar 2003
Posts: 4,848
Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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I have a gun drilled crank bolt on my street Hemi that came from a top fuel car!
Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: HemiRick]
#690771
05/07/10 04:23 PM
05/07/10 04:23 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
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Quote:
I have a gun drilled crank bolt on my street Hemi that came from a top fuel car!
Me too, the reason it's drilled is so the socket will stay on the bolt. I put one on my 440.
Here's what the socket looks like. It's old school really. Nowadays we use a PSI reinforcement down there on the crank with a titanimun hub so it won't weld to the crank. Like in my picture above.
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: 4boxers4]
#690772
05/07/10 04:31 PM
05/07/10 04:31 PM
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Joined: Jan 2006
Posts: 957
Heart of Ohio
4boxers4
OP
super stock
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OP
super stock
Joined: Jan 2006
Posts: 957
Heart of Ohio
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My buddy is a Furd fan! I am smack talkin' for fun but I had heard enough of "the new Mustang beats the hemi Challenger" blah, blah... And the old Hemi isn't related to the Top Fuel at all...blah, blah! Thanks guys!
Persistance is omnipotent
Durability Engineer, Chair and Couch division...
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Runner2go]
#690773
05/07/10 04:34 PM
05/07/10 04:34 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
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Too Many Posts
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Cincinnati, Ohio
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 So how many beers do they put in the gray cooler before heading into battle 
I'm thinking about 10-12
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Challenger 1]
#690774
05/07/10 09:43 PM
05/07/10 09:43 PM
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Joined: Feb 2005
Posts: 528
SW CO
HemiSportFury
mopar
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mopar
Joined: Feb 2005
Posts: 528
SW CO
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The Donovan 417 as I recall was pretty much a copy of the 392 Hemi and many or most of the parts would interchange. They ran that engine for quite a few years after the 426 Hemi came out before the top fuel cars switched to the 426 derived motor.
'64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60
'57 Belvedere 2dr sedan, current project in process
'19 Cherokee Trail Hawk Elite
'03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: HemiSportFury]
#690775
05/08/10 12:37 AM
05/08/10 12:37 AM
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Joined: Jan 2003
Posts: 8,848
poplar bluff mo.
toplescuda
I Whine
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I Whine
Joined: Jan 2003
Posts: 8,848
poplar bluff mo.
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many of the external will fit they use a bigger lifter and a differnt cam bearing(size) most of the blower intakes are 10 bolt as compared to 16 bolt pic of angies 426 (stock bore/stroke)hemi 
1970 barracuda convert. 1 of 59
1970 pro street A.A.R. clone (panther pink)
1971 charger
2015 hellcat challenger. Redline red
2014 quad cab 4x4 ram 8 speed hemi
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Re: Top Fuel Hemi similar to OEM Hemi?
[Re: Challenger 1]
#690776
05/08/10 12:47 PM
05/08/10 12:47 PM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
master
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master
Joined: Nov 2004
Posts: 2,825
Sk. Canada
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Quote:
Quote:
Its not stock rocker arms they are running but on the exhaust side they do not run roller tip rockers.
That's correct, they have to be really strong to open the valves with nitro. And do you know what would happen if the rocker"broke off"?
It would prevent the super charger from "migrating" off the engine when that cylinder stops firing and loads up with fuel pushing it back up the inake??
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