HEMI in NHRA T/F,F/C,TAD,TAFC
#1107340
11/04/11 11:11 PM
11/04/11 11:11 PM
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Joined: May 2005
Posts: 304 Enfield, Ct
Moe
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Posts: 304
Enfield, Ct
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HEMI in NHRA T/F,F/C,TAD,TAFC. What is the reason why the HEMI is the choice of engines. It will stay together @ 8000 Hp? It has superior dentonation characteristics? Ford & GM won't work in these applications? Need a good detailed answer for the guys at work. "Google" Won't give me an answer. THANKS!
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: Moe]
#1107341
11/05/11 07:28 AM
11/05/11 07:28 AM
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Joined: Jan 2003
Posts: 20,185 Park Forest, IL
slantzilla
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Because it is the only engine allowed by the NHRA.
"Everybody funny, now you funny too."
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: Challenger 1]
#1107343
11/05/11 10:18 AM
11/05/11 10:18 AM
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Joined: Jan 2003
Posts: 11,408 NJ
rdrnr6970
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because years ago the hemis were beating everybody...they had the most horsepower,when placed in vehicles they were the fastest.racers found out the hemispherical combustion chambers,the motor set up, in these mosters couldnt be beat!
OWNER OF EVERYTHING FROM 1956 300 B,IMPERIAL,NEW YORKER HEMIS,AND NEW HEMI TRUCKS.....5TH GENRAMS.COM... 1969/70 ROADRUNNERS ,DARTS/CORONETS, NORTHEAST HEMI OWNERS ASSOCIATION.....WWW.PHANTASMCUDAS.COM....MOPAR FAMILY FOR 50 YEARS AND STILL GOING!MOPAR OWNER COAST TO COAST!!!!
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: rdrnr6970]
#1107344
11/05/11 10:19 AM
11/05/11 10:19 AM
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Joined: Jan 2003
Posts: 11,408 NJ
rdrnr6970
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amd YES...HEMI motors look cool!
OWNER OF EVERYTHING FROM 1956 300 B,IMPERIAL,NEW YORKER HEMIS,AND NEW HEMI TRUCKS.....5TH GENRAMS.COM... 1969/70 ROADRUNNERS ,DARTS/CORONETS, NORTHEAST HEMI OWNERS ASSOCIATION.....WWW.PHANTASMCUDAS.COM....MOPAR FAMILY FOR 50 YEARS AND STILL GOING!MOPAR OWNER COAST TO COAST!!!!
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: rdrnr6970]
#1107345
11/05/11 10:33 AM
11/05/11 10:33 AM
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Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
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ill
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I was going to say something like ,, no-one designs motors here anymore! now its built on someones computor in japan or china. same as the cars platform , car makers used to have designers, now they leave that to the jackets they wear
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: Challenger 1]
#1107347
11/05/11 11:21 AM
11/05/11 11:21 AM
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Joined: Jan 2003
Posts: 11,408 NJ
rdrnr6970
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Your #1 source for current events
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OWNER OF EVERYTHING FROM 1956 300 B,IMPERIAL,NEW YORKER HEMIS,AND NEW HEMI TRUCKS.....5TH GENRAMS.COM... 1969/70 ROADRUNNERS ,DARTS/CORONETS, NORTHEAST HEMI OWNERS ASSOCIATION.....WWW.PHANTASMCUDAS.COM....MOPAR FAMILY FOR 50 YEARS AND STILL GOING!MOPAR OWNER COAST TO COAST!!!!
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: Challenger 1]
#1107348
11/05/11 11:26 AM
11/05/11 11:26 AM
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Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
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We all know what the Hemi does,, but why hasn't Ford,,, Chevy,,, tried to put some type of engine that would at least compete with the Hemi?? The Hemi that is being used , is just a distant relative of the original Hemi.
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: dennismopar73]
#1107349
11/05/11 11:44 AM
11/05/11 11:44 AM
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Joined: Jan 2003
Posts: 11,408 NJ
rdrnr6970
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ford did try in 69 with the BOSS 429,hemi configuration.limited sales,and the expense of the motor and its development,prob led to its demise.chevy tried too,their was a smokey yunik built( i think)302?or 307?cross ram hemi,that was put in a 68/69 camaro,but never worked out.
OWNER OF EVERYTHING FROM 1956 300 B,IMPERIAL,NEW YORKER HEMIS,AND NEW HEMI TRUCKS.....5TH GENRAMS.COM... 1969/70 ROADRUNNERS ,DARTS/CORONETS, NORTHEAST HEMI OWNERS ASSOCIATION.....WWW.PHANTASMCUDAS.COM....MOPAR FAMILY FOR 50 YEARS AND STILL GOING!MOPAR OWNER COAST TO COAST!!!!
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: rdrnr6970]
#1107350
11/05/11 01:08 PM
11/05/11 01:08 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
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Memphis
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The reason why Hemis dominate the Nitro classes is because they are the only engine with a port design good enough to keep the exhaust valves from melting. During the overlap period enough air goes thru them to cool the exhaust valve for the next stroke.
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: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: MoparDan]
#1107353
11/06/11 12:37 AM
11/06/11 12:37 AM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
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NHRA killed the hemi in pro stock by assigning it a very uncompetitive weight break..
so with the swipe of a pen the 426 hemi was dead in pro stock...after several years of trying..all further development on the PS hemi was stopped..
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: Moe]
#1107358
11/06/11 03:12 PM
11/06/11 03:12 PM
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Joined: Jan 2003
Posts: 25,879 Rio Linda, CA
John_Kunkel
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Quote:
HEMI in NHRA T/F,F/C,TAD,TAFC.
What is the reason why the HEMI is the choice of engines.
The Hemi is easier than others to maintain, other designs require too much time to teardown/reassemble between rounds.
The INTERNET, the MISinformation superhighway
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Re: HEMI in NHRA T/F,F/C,TAD,TAFC
[Re: John_Kunkel]
#1107359
11/06/11 03:33 PM
11/06/11 03:33 PM
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Joined: Feb 2003
Posts: 8,020 Pangaea
B5 Bee
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Pangaea
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By 1990, the 426 Hemi type motors were the only motor being used in the nitro classes for reasons given above (ease of maintainence and performance using a blower and nitro). The 426 Hemi rule came not long after Bernstein invested in and was testing the McGee 4valve OHC motor. The Hemi only rule was to slow the rising costs of running in the nitro classes.
Best I recall, the last TF car that won a National event (Springs I think) that wasn't 392 or 426 based, was Jim Bucher's Chevy. He was an underdog favorite, ran 3 or 4 years in the early '70s on a small budget, a Chevy motor and still managed to win some rounds.
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