Ol' Fart's Firebird Fantasy

[Tony Corley]

You can download it here. https://www.nationaldragster.net/bit...-rulebook.html

[oldskool]

Originally Posted by Tony Corley

You can download it here. https://www.nationaldragster.net/bit...-rulebook.html

OK, I'll give it a shot. thanks !

Nope, access denied--for NHRA members only !

[impstocker]

I think what Tony means you use the roll bar as a way to strengthen frame. I have lower crossbraces to that crossmember that tends to pull out. I also replaced rubber body bushings with solids.

Will Lamprecht I/SA Impala 1965 in progress

[Tony Corley]

Originally Posted by impstocker

I think what Tony means you use the roll bar as a way to strengthen frame. I have lower crossbraces to that crossmember that tends to pull out. I also replaced rubber body bushings with solids.

Will Lamprecht I/SA Impala 1965 in progress

That's what I was referring to. Roll cage to tie together and prevent frame twist, then anti roll bar to prevent suspension twist. Obviously solid bushings to help stop suspension movement (and body bushings too, as you stated). I also prefer adjustable shocks for fine tuning. Some of this is referring to coil spring cars in general, (my Mustangs), while some of it is from previous A bodies, I have owned. (Monte Carlo, several Chevelles). These are my choices, others may have a different opinion.

[oldskool]

Originally Posted by impstocker

I think what Tony means you use the roll bar as a way to strengthen frame. I have lower crossbraces to that crossmember that tends to pull out. I also replaced rubber body bushings with solids.

Will Lamprecht I/SA Impala 1965 in progress

Yeah, if I understand the general rules I looked at online, it appears that all cars must have at least a 5-point roll bar which includes a driver side bar. So, I assume that a good 6-point will strengthen the body / frame enuff for 11 or 12 sec Stocker duty.

Found this info in section 20, page 20-21 under "4:10 Roll Bar" There is an illustration on page 21.

http://www.nhra.com/userfiles/file/T...A_Rulebook.pdf

[Tony Corley]

Originally Posted by oldskool

Yeah, if I understand the general rules I looked at online, it appears that all cars must have at least a 5-point roll bar which includes a driver side bar. So, I assume that a good 6-point will strengthen the body / frame enuff for 11 or 12 sec Stocker duty.

You should reread. All cars are not required to have a rollbar. It is ET specific.

[Billy Nees]

Originally Posted by Tony Corley

It is ET specific.

It is CLASS specific. N/S and lower do not need a rollbar.

[Tony Corley]

Originally Posted by Billy Nees

It is CLASS specific. N/S and lower do not need a rollbar.

I guess we are both right. Let an N/Stocker run quicker than 11.49 and it too will be getting a rollbar,(and a HP Factor), LOL. But you are correct, as it stands, CLASS specific in Stock.

[HandOverFist]

Originally Posted by Billy Nees

It is CLASS specific. N/S and lower do not need a rollbar.

Unless it is a convertible like mine in which case you have no choice.

[oldskool]

Originally Posted by Tony Corley

You should reread. All cars are not required to have a rollbar. It is ET specific.

OK, I reckin I can't read. I just read thru it again. It says that all cars with frames must have the roll bars bolted or welded to the frame, and all unibodies must use plates welded or bolted to body, etc. Also tells and shows how to attach seat to roll bar.

So, are you saying that some cars can use a stock seat even without a head rest, and no roll bars, if they go slow enuff ? I'm sorry to ask such infintile questions. But if I knew the answers I wouldn't be asking.