Trans-Am info for the 1966 Barracuda
Hi Chris,
This is a great project to take on. The early Barracudas and Darts are actually a better place to start to build a road race car than the Mustang (having built/tuned on all three I speak with a little experience: [ame]http://users.erols.com/dmapes/[/ame] ). Most of the vintage rule sets out there, for US sanctioning bodies, are based upon the SCCA 1967 GCR ([ame]http://www.scca.com/assets/UpdatedVintageGCRRuleBook.pdf[/ame]) with added "allowances" for safety, reliability, and parts availability.
Correcting Matt's post, above, SVRA used to have a requirement that cars running their Group 6 (BP, AS, TA, etc...) have an actual racing history prior to 12/31/1972, but that rule was dropped in 2006 after a vintage-car race in mid-July of 2005 at Road America in Elkhart Lake, Wisconsin, where there was an awful pileup: http://www.caranddriver.com/news/vintage-racing-takes-a-big-hit-car-news
So there is now a good deal more acceptance at SVRA for correct "tribute" recreations. SVRA is a good place to start looking for rules guidance:
http://www.svra.com/rules/
And their MOPAR specific allowances: [ame]http://www.svra.com/wp-content/uploads/2013/02/Chrysler_Corp-MoPar_64-66.pdf[/ame]
(I took the liberty of writing / negotiating the SVRA allowances when I noticed they did not have any posted for MOPARs :iconbigg: )
As is usually the case HSR has their own rules that conflict to some degree with SVRA and SCCA: [ame]http://www.hsrrace.com/Rules/FIA_CLASS_SPECIFICATIONS-2013.pdf[/ame]
Somebody noted that people were running updated blocks and other parts. Yep the TRULY correct parts are getting WAY too rare and expensive to use at the race track. Why risk an OEM K-code 289 block when you can get a much tougher FMS Boss casting and reduce your chances of cross ventilating in in the braking zone for turn one. Nothing quite like trying to haul a car down from 150 MPH after you've covered the tires & brakes with mix of hot oil and water. Same reason I'd use a replacement 340 block if I could afford it. Same goes for cranks, rods, pistons, and valve gear.
I like and observe the HSR rev limit rule even though my engine (0.045" over 318 ) is too big to run with them. Combined with good parts, that assures a lot of track time between rebuilds.
Dave
Hi Chris,
This is a great project to take on. The early Barracudas and Darts are actually a better place to start to build a road race car than the Mustang (having built/tuned on all three I speak with a little experience: [ame]http://users.erols.com/dmapes/[/ame] ). Most of the vintage rule sets out there, for US sanctioning bodies, are based upon the SCCA 1967 GCR ([ame]http://www.scca.com/assets/UpdatedVintageGCRRuleBook.pdf[/ame]) with added "allowances" for safety, reliability, and parts availability.
Correcting Matt's post, above, SVRA used to have a requirement that cars running their Group 6 (BP, AS, TA, etc...) have an actual racing history prior to 12/31/1972, but that rule was dropped in 2006 after a vintage-car race in mid-July of 2005 at Road America in Elkhart Lake, Wisconsin, where there was an awful pileup: http://www.caranddriver.com/news/vintage-racing-takes-a-big-hit-car-news
So there is now a good deal more acceptance at SVRA for correct "tribute" recreations. SVRA is a good place to start looking for rules guidance:
http://www.svra.com/rules/
And their MOPAR specific allowances: [ame]http://www.svra.com/wp-content/uploads/2013/02/Chrysler_Corp-MoPar_64-66.pdf[/ame]
(I took the liberty of writing / negotiating the SVRA allowances when I noticed they did not have any posted for MOPARs :iconbigg: )
As is usually the case HSR has their own rules that conflict to some degree with SVRA and SCCA: [ame]http://www.hsrrace.com/Rules/FIA_CLASS_SPECIFICATIONS-2013.pdf[/ame]
Somebody noted that people were running updated blocks and other parts. Yep the TRULY correct parts are getting WAY too rare and expensive to use at the race track. Why risk an OEM K-code 289 block when you can get a much tougher FMS Boss casting and reduce your chances of cross ventilating in in the braking zone for turn one. Nothing quite like trying to haul a car down from 150 MPH after you've covered the tires & brakes with mix of hot oil and water. Same reason I'd use a replacement 340 block if I could afford it. Same goes for cranks, rods, pistons, and valve gear.
I like and observe the HSR rev limit rule even though my engine (0.045" over 318 ) is too big to run with them. Combined with good parts, that assures a lot of track time between rebuilds.
Dave