Re: Has anyone used this A518 swap crossmember?
[Re: 300by500]
#2486493
04/22/18 06:41 PM
04/22/18 06:41 PM
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Joined: Aug 2011
Posts: 2,865 Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,865
Pattison Texas
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I made my own xmember for my 68 Charger, there is quite a bit of mods to the floor pan & torsion bar Xmember for the A518, I would not think that an A body would have more room.
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
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Re: Has anyone used this A518 swap crossmember?
[Re: 300by500]
#2486572
04/22/18 10:12 PM
04/22/18 10:12 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
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I Live Here
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Posts: 17,918
Akron, Ohio
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Everything I've read has shown extensive mods, here's a whole build thread...... https://www.forabodiesonly.com/mopar/threads/42rh-a-500-in-a-duster-with-pictures.178459/I know one guy that did it to his Duster and he was pretty unhappy about how much it slowed his car down after doing all that work. I believe it has a .69 overdrive which is better than the .78 Gearvendors overdrive but the GV doesn't slow the car down. CRT might have some products to make the 518 more efficient.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Has anyone used this A518 swap crossmember?
[Re: CRT]
#2486652
04/23/18 01:11 AM
04/23/18 01:11 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Your gonna be cutting the tunnel... the 518 is big.. I run a 518 in my Rampage but the whole floor is custom
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Re: Has anyone used this A518 swap crossmember?
[Re: CRT]
#2486661
04/23/18 01:26 AM
04/23/18 01:26 AM
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Joined: Aug 2011
Posts: 2,865 Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,865
Pattison Texas
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You have pics of the floor mods?
I thought crossmember & x member was the only mods needed I dont have any, but on the floor it is all hammer work,most on the driver side,my factory console still works. The Xmember hump in the floor board has to be raised,if not done the driveshaft angles become a problem.
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
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Re: Has anyone used this A518 swap crossmember?
[Re: 300by500]
#2486666
04/23/18 01:32 AM
04/23/18 01:32 AM
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Joined: Feb 2003
Posts: 18,582 Rust Belt, SW PA
Silver70
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I Live Here
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Rust Belt, SW PA
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B-bodies the crossmember center has to be modified. In e-bodies, the crossmember a couple inches back and doesn't need to be cut, just a tight fir with the speedo. I've never done an a-body, not sure how far back the crossmember is vs e and b.
I've always made my own vs buying... well modified the original.
68 Road Runner, 69 Belvedere, 71 Challenger Vert 340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z 66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram
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Re: Has anyone used this A518 swap crossmember?
[Re: CRT]
#2526051
07/23/18 08:35 PM
07/23/18 08:35 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
I Live Here
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I Live Here
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Posts: 17,918
Akron, Ohio
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Sorry for the delay John, took me awhile to remember who it was. I was wrong, the 518 is the only trans he's had in his white Duster, his name is Andy and I believe he's done business with you. He thinks it is slowing him down as he's in the low 11's and thinks he should be high 10's. I think he plans to put a 904 or 727 in it soon, then he'll be able to tell exactly what the ET difference is. He said the 518 is also very heavy. I would really like to try one on my next build if I can find an affordable trans and apply your cool new parts with it.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Has anyone used this A518 swap crossmember?
[Re: 300by500]
#2526066
07/23/18 08:54 PM
07/23/18 08:54 PM
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Joined: Jan 2003
Posts: 12,171 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,171
Benton, IL.
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I have a 518 behind my Hemi. The 518 itself won't slow the car down with the exception of it's additional weight. Little or no impact on straight line performance.
As to the cross member, that one suffers from the same problem mine has. The mount is forward of the cross member which puts it in a leverage situation trying to twist the entire assembly. These 518s are heavy.
I intend to make a new cross member where the mount is centered under the cross member. There are 3 mounting holes on the tranny, so making a plate to position the mount directly under the cross member shouldn't be that big a deal.
Personally, I love the 518 and feel it is worth the trouble to fit it in my Cuda. Now, trying to get it in an A body might be a different matter.
Master, again and still
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Re: Has anyone used this A518 swap crossmember?
[Re: 300by500]
#2936415
06/24/21 01:47 PM
06/24/21 01:47 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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When I built my Rampage I put a 518 in it.. when building the whole car it was fairly easy to put the 518 in it... its a tube chassis car thats a street rod... so its fairly easy to put any trans in it at the time.. with the OD in it I run a 4.10 gear also has a 416ci with injection
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Re: Has anyone used this A518 swap crossmember?
[Re: PlumCrazyChris]
#2936521
06/24/21 07:44 PM
06/24/21 07:44 PM
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Joined: Aug 2011
Posts: 2,865 Pattison Texas
CSK
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master
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Pattison Texas
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No tunnel or other body/structural mods are required on 70 and later B and E bodies....maybe M bodies. All other body styles will require some tunnel mods to accommodate the wider tail of the A500/A518. This swap is totally worth it. By far, It is the best mod I've done to my Challenger. Bolts up like stock, stock linkage works well. Just need a custom crossmember...made my own.
The late model RX8 seats are a close second, the 5.7 Hemi.... not so much. I should have stroked and TBI'd a 360. Looks cool and has lots of power though. a 1970 B body will require the same as my 1968 Charger, it is a lot of work, yes the tunnel will need work
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
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