NHRA BO29 information from 1968

The BO29 Race Hemi Barracuda dominated the SS/B class. Combining radical weight loss attributes with a motor producing near 550hp…these 3100lb cars dragged SS ETs into the mid 10’s.
As with other ‘top of the heap’ Super Stockers of 68, there was little relevant in the SS Darts and Barracudas to road going cars. In fact, these cars were not even assembled by Chrysler but by HURST Performance Research – and featured significant weight loss and structural modifications.
Appx 75 stick and 75 auto cars were built once production ceased. They were, however, issued with a VIN tag…making them just as ‘legal’ for road use as a CJ Mustang factory racer…not that it was likely to happen with either.
Development started after the Winternationals,and one almost stole Top Stock at the Springnats…6 months and a legend was born.
Modifications included:
– The steel bodies were stock but had seam sealer, sound deadening and insulation removed. The cars were finished in a grey primer with front panels made of fibreglass painted in black. A functional air scoop was included on the hood.
– All interiors were a standard black upholstery, the heater and radio were deleted. The front seats were replaced by lightweight Bostrum Companion buckets, the rear seat was completely removed and replaced by a cardboard panel. Lighter glass was fitted as was a smaller 135-amp battery in the trunk.
– Chassis modifications were limited to Super Stock rear springs and heavy-duty shock absorbers. The steel wheels were painted black. Because the stock Dart rear wheel opening was semi-skirted, trimming was performed to prevent tire contact (the Barracuda’s larger wheel openings were not affected). The front shock tower was modified, as was the K frame.
– Gearbox – The 426 HEMI engine was fitted to a A833 HURST slickshift tranmission case with modified Super Stock internals. This was attached to a Hurst Competition Plus floor shifter.
– Transmission – B&M manufactured a fully manualised 727 auto transmission and provided the torque converter, cast steel
– Motor – Ran 12.5:1 compression, cross ram intake, twin 835 Holley carbs, transistorised twin point distributor,
– Driveline – 4.86:1 gear set, superstock springs and long extension rear shocks & 90/10 front drag shocks
Most of the the STOCK Mopar 426 Street Hemi cars were shut out of the
NHRA Stock Class in 1968 as the NHRA re-factored them from 425 HP to 465 HP.
Only the heavy-beast Mopars like the Dodge Chargers had enough bulk to fit into the A/Stock {8.00 to 8.49 Wt/HP} Class.
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