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Correct ECU mount on firewall for 1971 Challenger R/T #1302980 09/12/12 04:51 PM 09/12/12 04:51 PM
Joined: Jan 2003 Posts: 6,497 N.E. Ohio K KillerBee OP master
KillerBee OP master K Joined: Jan 2003 Posts: 6,497 N.E. Ohio	Is the ECU supposed to be mounted directly to the firewall or attached to a raised bracket on a 1971 Challenger R/T. My car appears to have the holes to mount the ECU directly to the firewall but in researching some other 71 Challengers the ECU appears to be mounted both ways. Is this a production date thing or is one right or wrong? Thanks.

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: KillerBee] #1302981 09/12/12 06:30 PM 09/12/12 06:30 PM
Joined: Jun 2003 Posts: 21,433 It's a dry heat gtx6970 Too Many Posts
gtx6970 Too Many Posts Joined: Jun 2003 Posts: 21,433 It's a dry heat	On a bracket . Is it an original ECU car ? I don't think electronic became avial till mid year and even then only on certain engines

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: gtx6970] #1302982 09/12/12 06:58 PM 09/12/12 06:58 PM
Joined: Jan 2003 Posts: 6,497 N.E. Ohio K KillerBee OP master
KillerBee OP master K Joined: Jan 2003 Posts: 6,497 N.E. Ohio	Quote: On a bracket . Is it an original ECU car ? I don't think electronic became avial till mid year and even then only on certain engines Hmm....the car has a June 16 SPD and currently has the electronic iginition wiring harness. Original 383 4 speed car, was that a 340 engine only thing? Would it be listed on my build sheet? 7376676-challengerenginecompartment.jpg (339 downloads)

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: KillerBee] #1302983 09/12/12 07:44 PM 09/12/12 07:44 PM
Joined: Oct 2006 Posts: 7,368 Iowa burdar Owen's Dad
burdar Owen's Dad Joined: Oct 2006 Posts: 7,368 Iowa	I thought it was 340 only in 71.

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: burdar] #1302984 09/12/12 08:37 PM 09/12/12 08:37 PM
Joined: Jan 2003 Posts: 3,000 Long Island, NY shakerjoe master
shakerjoe master Joined: Jan 2003 Posts: 3,000 Long Island, NY	I thought 340 only for elec.ig., didn't think the bracket came in until late 71 - for the 72 models...

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: shakerjoe] #1302985 09/12/12 08:50 PM 09/12/12 08:50 PM
Joined: Nov 2003 Posts: 12,494 Western Colorado High Desert moparmarks I Live Here
moparmarks I Live Here Joined: Nov 2003 Posts: 12,494 Western Colorado High Desert	Quote: I thought 340 only for elec.ig., didn't think the bracket came in until late 71 - for the 72 models... Thats what I hear tell. 72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/ motormangj@gmail.com

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: moparmarks] #1302986 09/12/12 09:15 PM 09/12/12 09:15 PM
Joined: Jan 2003 Posts: 6,497 N.E. Ohio K KillerBee OP master
KillerBee OP master K Joined: Jan 2003 Posts: 6,497 N.E. Ohio	OK that makes sense. That's why the spare bracket I tried to test fit with the ECU didn't line up to any holes on the firewall. The car must have came originally came with points ignition and was converted to electronic at some time. At least they didn't drill any new holes in the firewall for the bracket.

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: KillerBee] #1302987 09/12/12 09:45 PM 09/12/12 09:45 PM
Joined: Jan 2003 Posts: 7,327 Toronto (YYZ) Ontario YYZ master
YYZ master Joined: Jan 2003 Posts: 7,327 Toronto (YYZ) Ontario	For a '71 Challenger R/T (or non-R/T), the electronic ignition was available only with the 340, and late in the model year (around March of 1970 IIRC - roughly around the time of the switch to blue engines) The ECU would mount to a metal bracket on the firewall to the left of the voltage regulator I have found that mounting the ECU to the underside of the battery tray works well. It's out of sight, gets good airflow to keep cool and it's easy to disguise/hide the wires with the factory harnesses.

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: shakerjoe] #1302988 09/12/12 09:56 PM 09/12/12 09:56 PM
Joined: Jun 2003 Posts: 21,433 It's a dry heat gtx6970 Too Many Posts
gtx6970 Too Many Posts Joined: Jun 2003 Posts: 21,433 It's a dry heat	Quote: I thought 340 only for elec.ig., didn't think the bracket came in until late 71 - for the 72 models... I can't answer that one. I'm not that familiar with 71 E bodies . I talked to a guy in the mid-west ( Kansas, or MO area maybe???? ) probably 30 years ago that had a 1971 Hemi Challenger he bought new. And If I remember right he said it came with electronic ignition system.

Re: Correct ECU mount on firewall for 1971 Challenger R/T [Re: gtx6970] #1302989 09/13/12 02:22 PM 09/13/12 02:22 PM
Joined: Jan 2003 Posts: 5,108 Chicago Blackhawks H hemicar1971 master
hemicar1971 master H Joined: Jan 2003 Posts: 5,108 Chicago Blackhawks	There are numbers for an electronic distributor for a 1971 Hemi Engine. I have never come across a 1971 Hemi E Body that received such a thing. GTX 69/70 did you happen to take pictues of this said 1971 Hemi Challenger or do you know the serial number of the car or even what color the car was. I have looked at the last three 1971 Hemi Challengers built and none have the electronic system in the car. All these 1971 Hemi Challengers are June built cars. 1971 HEMI E BODY REGISTRY

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