Don's Mopar Muscle Car thread

[DonP]

For those asking for pictures.

The GTA snuck in there too.






The interior on the Challenger looks worse than it is. I was adjusting the slap-stick throw. The only rip in the interior is on the driver seat, and it's in the seam.


I ran out of batteries before taking a picture of the Cuda's motor, but it's just a plain-jane 318 2bbl right now - numbers match LOL!








A stout 360 with an Action+ and a racing Thermo-quad. The guys on Moparchat.com say this is the "hot ticket" The motor runs great, and each cyliner pumps 150psi on a pressure test.

[StukaJU87]

I want that Challenger.

[MBreinin]

A "Thermobog"? My lord....the next best thing to a "Quadrabog".

Mike

p.s. cool little Mopars.

[DonP]

A "Thermobog"? My lord....the next best thing to a "Quadrabog".

Mike

p.s. cool little Mopars.

It seems to run better than the Holley 750dp that was on there before. The Holley wasn't a good fit with the spreadbore Action+.

Personally, I've always used Holleys, but there is lot's of support for the thermo's on moparchat.

[MBreinin]

It seems to run better than the Holley 750dp that was on there before. The Holley wasn't a good fit with the spreadbore Action+.

Personally, I've always used Holleys, but there is lot's of support for the thermo's on moparchat.

That is because you over carbed it. I would run a 650DP on a 360. Jet it correctly and you are golden. I hate Rochesters and Carters....well, I like dual AFBs, but that is for a vintage look. AFBs are the best sounding American carbs though. I find that for down and dirty work, you can't beat a Holley once it is properly setup...and they are very easy to set up. With quick change bowls it takes about 3 minutes to jet them.

However, if it is working, stick with it. For street use, a vac secondary carb is often the best move, especially with a slush box.

What kind of cam are you running? Converter? Gears? Compression?

Mike

[DonP]

That is because you over carbed it. I would run a 650DP on a 360. Jet it correctly and you are golden. I hate Rochesters and Carters....well, I like dual AFBs, but that is for a vintage look. AFBs are the best sounding American carbs though. I find that for down and dirty work, you can't beat a Holley once it is properly setup...and they are very easy to set up. With quick change bowls it takes about 3 minutes to jet them.

However, if it is working, stick with it. For street use, a vac secondary carb is often the best move, especially with a slush box.

What kind of cam are you running? Converter? Gears? Compression?

Mike

LOL! I bought it with the 750dp (and yes, I knew it was overcarbed - hence the carb change). I looked at Holleys, but like I said I took the advice of the guys on MC. I have a complete brand new 6 pack induction system for it - the Thermoquad was just something to play with in the mean-time (and to see if those guys know what they are talking about).

No sure of the cam specs, compression ratio or converter, but the rear end is a 3.42. Tranny is a 904. The motor is a 1971 360, which used the 340 molds (thicker cylinder walls for more overboring). I haven't pulled it apart to see what's under the cover, but it seems like it was built correctly.

[MBreinin]

LOL! I bought it with the 750dp (and yes, I knew it was overcarbed - hence the carb change). I looked at Holleys, but like I said I took the advice of the guys on MC. I have a complete brand new 6 pack induction system for it - the Thermoquad was just something to play with in the mean-time (and to see if those guys know what they are talking about).

No sure of the cam specs, compression ratio or converter, but the rear end is a 3.42. Tranny is a 904. The motor is a 1971 360, which used the 340 molds (thicker cylinder walls for more overboring). I haven't pulled it apart to see what's under the cover, but it seems like it was built correctly.

Well, the 360s didn't have rocking compression...so unless someone changed the pistons, I would watch how much fuel you feed it. The SixPack may be too much as well. Remember, that was geared towards a 340 with higher compression, a manual tranny, aggressive cam and steeper gears. 3.42 is a compromise set, still high enough for highway use, with a little low for grunt. I have found that if you don't do alot of highway crusing, 3.90 or 3.91 is a great street gearset, with a 3 speed auto or 4 speed manual. Still allows you to go on the road, if you "have to", and cetainly allows some grunt.

150 psi in the holes sounds like a low compression motor to me. My 8:1 306 pulled around that..and that is normal for Ford 2.3 Turbos, which are also 8:1. That doesn't mean you have an 8:1 motor, but I wouldn't expect it to be a poppin' 11:1 motor either!!!

Mike

[DonP]

Doesn't the cam duration impact the compression ratio? Of course I have no way to tell how built this motor is until I take this apart and see what's under there, but from the tone I'd say there is definitely a lumpy cam under there, so I think some work has been done.

[pott]

I want your Challenger BAD...

[straycat]

Thermo quads are great carbs.My 71 340 Dodge Demon ran better with it than it did with the six pak set up.
This was back in 73-74 I contacted ED Hamburger at Chrysler and he told me what to tweak on the TQ and it worked like a charm.Bone stock motor,maual shift valve body in the trans, headers(closed),and 4.56 gears out back on street tires the 1/4 mile ETs 12.60s with M&H slicks and open headers 12.20s not bad for back then.

[DonP]

Thermo quads are great carbs.My 71 340 Dodge Demon ran better with it than it did with the six pak set up.
This was back in 73-74 I contacted ED Hamburger at Chrysler and he told me what to tweak on the TQ and it worked like a charm.Bone stock motor,maual shift valve body in the trans, headers(closed),and 4.56 gears out back on street tires the 1/4 mile ETs 12.60s with M&H slicks and open headers 12.20s not bad for back then.

Damn nice I'd say! I loved having the manual shift valve body in my first Challenger (too bad I was a stupid 18 year old and blew it up LOL!). That car was a built 318 (high rev'ing) and had 4.11's in the back - talk about a death ride for a teen LOL! But that was a great car - it never broke down on me the whole 3 years I had it, and my stupidest mistake was selling it.

I have a set of the 340 cast iron header to drop in as well.

[wulfe13]

Nice GTA too....

Oh, and I've never like Holley Carbs! They require way too much maintenance. A Quadrajet or Edelbrock are great! Just set 'em and leave them alone!

[sambencuda]

Chryslers at Carlisle July 7th, 8th, 9th. I'm looking to maybe come home with a car this year. Although, with the amount I have to spend, I doubt I'll come home with anything decent if anything at all.

Nice cars Don. Don't ever sell em like I did with mine. Man do I regret selling my 70 cuda. They are skyrocketing in value. Especially your 71 Barracuda. That grill is worth a fortune alone!

[straycat]

+1 on the 71 cuda grille.
I had a 70 440+6 cuda (originaly a Hemi)4 speed dana 60, radio/ heater delete no undercoating, no carpet just the funky mat.The car was delivered to Arlen Vanke (remember him?)It was never used as a SS/D race car by Arlen.He sent it back to Chrysler.
A 65 formula S cuda super commando 273 (super D option pkg)4 speed.
64 sport fury stage III 426 wedge 727 trans and 83/4 rear with SS springs.


68 charger R/T 440 /727.
70 challenger 383 /727.
Don't sell em'

[straycat]

OBTW Don The 65 cuda got balanced and blueprinted shot peened aling honed by D&J automotive in Cinci.The car flat kicked ass on 396s I ran ET bracket a lot with this car it was so consistant it ran 12'60s @ 120 MPH back in 68.Not bad huh?