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'70 Chevelle WIP: 1975 NHRA Modified Production Rules Compliant

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  • Member since
    October, 2017
  • From: Arvada, CO
'70 Chevelle WIP: 1975 NHRA Modified Production Rules Compliant
Posted by Straightliner1 on Wednesday, October 11, 2017 11:13 AM

  Having recently moved back to Colorado, and finally having my workshop up and running, I came across this project I started fifteen years, ago--or so. It began as AMT's '70 Malibu, to be built to comply with the NHRA's 1975 rules for Modified Production. I began by replacing the Chevelle's front inner fenderwells and front clip with those from AMT's '70 Monte Carlo, along with the Monte's front suspension including its steering box.

The lower control arms have been boxed, and a few minor details thrown at them. Changes to the front suspension revolve mostly around the replacement of the swaybar/tierods assembly. The steering is posable. Brass pins mount the steering arm and the stabilizer arm, on the opposite side.

Since I returned to work on it, I have been enlightened to the shortcomings of the AMT body. Hence, I have switched to Revell's "snapper" for the body (it's the best "A" body Chevy out there, IMO). I've also added the cowl, firewall and pieces of the front floor from AMT's '68 El Camino, as well as the center section of the trans mount x-member from the same kit.

From the firewall, back, the chassis is from the AMT Chevelle kit I began with. While I could have replaced those with newer, better components, the newer chassis are wider at the rear axle, so the slicks wouldn't fit inside the wheelwells. Narrowing of the vehicle's chassis is not allowed, per rules, so, since the existing chassis was unmodified in that regard, at least I remained rule compliant!grin Modification of inner wheelwells for clearance is legal, so long as they are "finished". So...

I replaced the single-piece cast timing cover/water pump/harmonic balancer assembly with a timing cover from the parts box, a water pump from a Revell '67 Camaro and a harmonic balancer turned from aluminum. The manifold is scratchbuilt from 23 pieces of styrene. I also deepened the sump on the oil pan. The engine is in its infancy, so things may change some, along the way.

I plan to use the interior door panels and dash from the Revell kit, inside the AMT interior tub. The snapper's interior is too deep to allow the chassis to fit inside the body, properly. As it sits, now, I almost have the kinks worked out in the body/interior tub/chassis mating, and am fairly happy with the way the cowl/firewall/floor/front inner wheelwells look together. The stance is just as I want it. Without further ado, here are photos of the project (maybe, if I've figured that out!). Comments are welcome!...Dan

 IMG_2560 by Daniel Himmel, on Flickr

 IMG_2542cr by Daniel Himmel, on Flickr

 Carbs-Manifold 1cr by Daniel Himmel, on Flickr

 IMG_2530cr by Daniel Himmel, on Flickr

 IMG_2522 by Daniel Himmel, on Flickr

 IMG_2526 by Daniel Himmel, on Flickr

 IMG_3318cr by Daniel Himmel, on Flickr

 IMG_3406cr by Daniel Himmel, on Flickr

 IMG_3412cr by Daniel Himmel, on Flickr

 

I build replicas of imaginary race cars.

 

  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Wednesday, October 11, 2017 3:53 PM

Began work on adapting the interior parts from the two kits together, and to the body...

 IMG_3430cr by Daniel Himmel, on Flickr

 IMG_3429cr by Daniel Himmel, on Flickr

 IMG_3428cr by Daniel Himmel, on Flickr

 IMG_3431cr by Daniel Himmel, on Flickr

 IMG_3438cr by Daniel Himmel, on Flickr

 IMG_3441cr by Daniel Himmel, on Flickr

I build replicas of imaginary race cars.

 

  • Member since
    February, 2008
Posted by justmike on Wednesday, October 11, 2017 7:32 PM

Whoa! Wow! How do you keep track of all that customization?!?  I'll be watching this one with interest

Feelings are like scents: The more they are analyzed, the worse they smell.
  • Member since
    January, 2011
  • From: long island, new york
Posted by chucky on Wednesday, October 11, 2017 7:48 PM

I love builds like this! You source whatever you need to get the accuracy you want. "Similar" parts are merely that. You will have a lot of time invested in this one and when it's done, many, if not most folks will not appreciate all the effort without the WIP photos and captions. Thanks for bringing along those of us who commit to similar efforts, knowing that the end result may not garner the respect it deserves on the contest table. That's what's great about displaying them here! Thumbs Up

chucky

  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Wednesday, October 11, 2017 8:12 PM
Thanks for your kind words, and your interest! As I work through the model, I envision what I want each sub-assembly to look like. Then as they begin to come together, I solve the issues that arise; For instance, the floor/trans tunnel, where it meets the firewall. The AMT '70 had a wide-open space between the two grey painted triangular areas in the photos. After all the work involved in getting the cowl/firewall in place, I surely couldn't live with that unfinished!grin

I build replicas of imaginary race cars.

 

  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Wednesday, October 11, 2017 8:22 PM
Thank you, Chucky! You are so right--I build like this, because it's what I enjoy! I love it, when something I've imagined comes to life. Especially in miniature. I always try to create things that are interesting, for my models, because I've always been fascinated by the fine details in the works of others. It's cool, when I feel like I've accomplished that, myself! That said, it's always great when others appreciate it, as well.

I build replicas of imaginary race cars.

 

  • Member since
    December, 2003
  • From: Nova Scotia
Posted by Bainford on Friday, October 13, 2017 7:35 AM

That is some top drawer model building, sir. Good thorough work and attention to detail. This is the kind of stuff I love to see on the forums, and I'll be watching this one come together.

Power matters in the straights.
Lightness matters everywhere. - Colin Chapman

Trevor

  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Friday, October 13, 2017 9:22 AM
Thank you, Trevor. More to come, soon!

I build replicas of imaginary race cars.

 

  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Tuesday, October 24, 2017 10:42 PM

  Markings Test by Daniel Himmel, on Flickr" alt="" />  IMG_3594cr by Daniel Himmel, on Flickr" alt="" />  IMG_3592cr by Daniel Himmel, on Flickr" alt="" /> Some progress photos. I swapped the original differential (Johan Sox and Martin 'Cuda) for one I found in the parts box that actually IS a Dana 60. The Johan unit is Dana 60 in rear cover, only. I've included a photo of the graphics I'll use, and a couple of the new third member with the pinion yoke and driveshaft I'm working on. Hope you guys enjoy!

 

I build replicas of imaginary race cars.

 

  • Member since
    December, 2005
  • From: Upstate New York
Posted by spencer1984 on Wednesday, October 25, 2017 6:25 AM
Some truly outstanding work you've done so far, looking forward to seeing more!
  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Thursday, October 26, 2017 12:49 AM
Thanks, Spencer! I hope I can deliver on that, fairly soon!

I build replicas of imaginary race cars.

 

  • Member since
    February, 2008
Posted by gbeaird on Thursday, October 26, 2017 3:29 PM

Cool!  I had a friend who used to race an E/MP Corvette during that time.  I would help crew when I could.  SBC with a Nash 5 speed.  Is your Chevelle going to be small block or BBC?  Can't tell from the image of the intake. 

BTW, that's an awfully-big front sway bar for a drag car.  Yes

 

Gene Beaird,
Pearland, Texas

  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Thursday, October 26, 2017 9:26 PM

That's very cool, Gene. MP was a great class! This will have  the big block with a Rock Crusher attached. I'll tell you a little story about that sway bar: When I first put it on, one of my friends said,"A sway bar on a drag car?!" I took it off. Not long after, another friend whose done some racing said that he'd taken one off his car--until the first time it launched and came back to earth. He said, "First thing I did when I got home was put it back on!" So, I put it back on. I know it's a bit large, but i didn't want to try to make another one!grin

I build replicas of imaginary race cars.

 

  • Member since
    December, 2005
  • From: southeast Texas
Posted by texwardfan on Friday, October 27, 2017 10:07 AM
This ones going to be awesome. I have definitely subscribed to this one. Looking forward to more.
  • Member since
    October, 2017
  • From: Arvada, CO
Posted by Straightliner1 on Friday, October 27, 2017 9:22 PM

Thanks, tex! Glad you're enjoying it! If I did this correctly, here's a small update.  IMG_3610cr by Daniel Himmel, on Flickr" alt="" />

  IMG_3635cr by Daniel Himmel, on Flickr" alt="" />  IMG_3647cr by Daniel Himmel, on Flickr" alt="" />

I build replicas of imaginary race cars.

 

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