1970-1972 Chevelle frame...what will get me bounced?

Jeff Lee · 12-24-2010, 10:54 AM

Quote:

Originally Posted by Jason Fuller

Now, that's what I need to hear! Thanks Jeff.

I assumed I could do pretty much anything but, until I hear from Travis I won't know...

Sorry, but why is it everybody has to get an opinion direct from tech on every issue? NHRA makes a rulebook and it's free. You have to read it, learn it, and follow it. Every little detail can not be put into print. It's a guide that has the most important elements and from there you make the decisions.

Run to Rund · 12-24-2010, 01:36 PM

the convertible frame merely added V shaped boxing sections to the open C channels between the torque boxes. Up through 67, the open C behind the rear wheels was also boxed part way. All body mount areas are on the main frame, nothing added there by the boxing sections. All A body frames were boxed at the front bumper back to the front torque box, and from the rear torque box over the wheels to the body mount area behind the rear wheels, so nothing was added there either by the convertible frame modification. a shorter transmission cross member was used with convertibles because they didn't go into a c section. Up through 67, there were "ears" welded to the inside verticals of the box, and 68-72 the boxing section included a formed perch for the cross member.

Run to Rund · 12-24-2010, 01:41 PM

El Caminos had the convertible frame, but after about 1967 they had a longer wheelbase than the 112" used by 2 door cars. Olds Vista Cruisers had boxed frames, but longer wheelbase. I have heard that the Buick GS's had boxed frames, but haven't checked. That could be why the list above separated them from other cars. Olds offered F35 through 1970. I don't know about other divisions; should be a list of options in the chassis section of the parts manual, at the front.

Tom keedle · 12-24-2010, 04:03 PM

Quote:

Originally Posted by Jeff Lee

Sorry, but why is it everybody has to get an opinion direct from tech on every issue? NHRA makes a rulebook and it's free. You have to read it, learn it, and follow it. Every little detail can not be put into print. It's a guide that has the most important elements and from there you make the decisions.

i don't see how it's be any different than subframe connectors BUT i don't make the rules...

jeff,wanna send me one of those "free" rulebooks?
(must be a west coast book)..

Jeff Lee · 12-24-2010, 11:16 PM

Quote:

Originally Posted by Tom keedle

i don't see how it's be any different than subframe connectors BUT i don't make the rules...

jeff,wanna send me one of those "free" rulebooks?
(must be a west coast book)..

It's free, it's online and it's at www.nhra.com

rallye bob · 12-25-2010, 10:21 AM

Quote:

Originally Posted by Jeff Lee

It's free, it's online and it's at www.nhra.com

Maybe I'm missing something, but it looks like the rule book is 10.00 + shipping.......

http://store.nhra.com/products/nhra-2010-rulebook/

Tom keedle · 12-25-2010, 10:40 AM

Quote:

Originally Posted by rallye bob

Maybe I'm missing something, but it looks like the rule book is 10.00 + shipping.......

http://store.nhra.com/products/nhra-2010-rulebook/

yeah, even the "free" downloadable one wants you to give them your membership number

http://www.nhra.com/members/registration.aspx

i guess i can wait a couple of weeks and pick one up at bandimere's swap meet space in feb...

Jeff Lee · 12-25-2010, 06:21 PM

I guess I always assumed those building or owning a class car were NHRA or IHRA members and had access to a rulebook

. My bad but that sure explains a lot!

Here is the link and as Tom pointed out, you will need to be a member. You can then download your own copy which is free with membership.
http://www.nhra.com/members/benefits.aspx

So to those out there contemplating owning or driving a class car, I strongly suggest becoming a member, knowing the rulebook, subscribing to Nitro Joes Stats and going to your local class race and talking to the participants.

Merry Christmas to all!

Tom keedle · 12-25-2010, 08:58 PM

Quote:

Originally Posted by Jeff Lee

I guess I always assumed those building or owning a class car were NHRA or IHRA members and had access to a rulebook

. My bad but that sure explains a lot!

Here is the link and as Tom pointed out, you will need to be a member. You can then download your own copy which is free with membership.
http://www.nhra.com/members/benefits.aspx

So to those out there contemplating owning or driving a class car, I strongly suggest becoming a member, knowing the rulebook, subscribing to Nitro Joes Stats and going to your local class race and talking to the participants.

Merry Christmas to all!

just so ya know, i DO pick one up every year but i still have questions...
i've found a few things, while not in the rule book,won't pass tech

Philip Saran · 12-27-2010, 11:45 PM

<So to those out there contemplating owning or driving a class car, I strongly suggest becoming a member, knowing the rulebook, subscribing to Nitro Joes Stats and going to your local class race and talking to the participants. >

The last ND I received before the holidays had an ad in it for the printed rule
book for $7.00 + handling charge if you called in the order. If you do it on
line then it is $10.00 + handling charge.

12-24-2010, 01:36 PM	#2
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 584 Likes: 9 Liked 54 Times in 27 Posts	Re: 1970-1972 Chevelle frame...what will get me bounced? the convertible frame merely added V shaped boxing sections to the open C channels between the torque boxes. Up through 67, the open C behind the rear wheels was also boxed part way. All body mount areas are on the main frame, nothing added there by the boxing sections. All A body frames were boxed at the front bumper back to the front torque box, and from the rear torque box over the wheels to the body mount area behind the rear wheels, so nothing was added there either by the convertible frame modification. a shorter transmission cross member was used with convertibles because they didn't go into a c section. Up through 67, there were "ears" welded to the inside verticals of the box, and 68-72 the boxing section included a formed perch for the cross member.

12-24-2010, 01:41 PM	#3
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 584 Likes: 9 Liked 54 Times in 27 Posts	Re: 1970-1972 Chevelle frame...what will get me bounced? El Caminos had the convertible frame, but after about 1967 they had a longer wheelbase than the 112" used by 2 door cars. Olds Vista Cruisers had boxed frames, but longer wheelbase. I have heard that the Buick GS's had boxed frames, but haven't checked. That could be why the list above separated them from other cars. Olds offered F35 through 1970. I don't know about other divisions; should be a list of options in the chassis section of the parts manual, at the front.

12-25-2010, 06:21 PM	#8
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: 1970-1972 Chevelle frame...what will get me bounced? I guess I always assumed those building or owning a class car were NHRA or IHRA members and had access to a rulebook . My bad but that sure explains a lot! Here is the link and as Tom pointed out, you will need to be a member. You can then download your own copy which is free with membership. http://www.nhra.com/members/benefits.aspx So to those out there contemplating owning or driving a class car, I strongly suggest becoming a member, knowing the rulebook, subscribing to Nitro Joes Stats and going to your local class race and talking to the participants. Merry Christmas to all! __________________ Jeff Lee 7494 D/S '70 AMX Last edited by Jeff Lee; 12-25-2010 at 06:27 PM.

12-27-2010, 11:45 PM	#10
Philip Saran Senior Member Join Date: Oct 2006 Location: Parker, CO. Posts: 728 Likes: 168 Liked 14 Times in 11 Posts	Re: 1970-1972 Chevelle frame...what will get me bounced? <So to those out there contemplating owning or driving a class car, I strongly suggest becoming a member, knowing the rulebook, subscribing to Nitro Joes Stats and going to your local class race and talking to the participants. > The last ND I received before the holidays had an ad in it for the printed rule book for $7.00 + handling charge if you called in the order. If you do it on line then it is $10.00 + handling charge. __________________ Phil Saran Parker, Colorado

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