boss 429 hp quesstimate??

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boss 429 hp quesstimate??

Post  Bosskk1786 on September 1st 2016, 4:34 pm

hello fellow blue oval faithful! I'm new to this sight. i recently just got my 69 boss 429 put back together after 10 long years of having it apart. i got to drag race it at a local airport event over the weekend after much anxiety and elevated blood pressure i discovered the mickey thompson drag radials are severely over matched... here are the stats on my build
4.39 bore
lunati 4.5 crank
mahle kaase boss nine pistons about 10.5:1
eagle 6.7 rods
lunati voodoo cam 30340743 solid lifter
257i 265e @.050
110/106 lsa/icl
nascar rocker arms
70 boss 429 full hemi chamber heads
2.30 intake 1.90 exhaust
the heads were ported by chapman racing heads thats the way i got them
kaase boss 9 4150 intake
holley 1000 annular booster carb
i know its making serious power as 1st and second gear went up in smoke on my first run.... any guesses would be greatly appreciated and how much power am i giving up with the small carb?... i have a kaase 4500 intake and a prosystems sv1 as well its about 1200 cfms but it was breaking up on me at 3500rpm. thanks for the replies in advance...... joe

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Re: boss 429 hp quesstimate??

Post  cletus66 on September 1st 2016, 7:31 pm

Time and MPH???
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Re: boss 429 hp quesstimate??

Post  Bosskk1786 on September 1st 2016, 8:14 pm

it was not a timed event. it was a flagged start and run to the cones on an 1/8th mile.... i plan on taking it to lancaster speedway in a week or so to see what it will do on a prepped surface

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Re: boss 429 hp quesstimate??

Post  dfree383 on September 1st 2016, 8:52 pm

700ish
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Re: boss 429 hp quesstimate??

Post  Bosskk1786 on September 1st 2016, 9:03 pm

i know i'm probably leaving a lot on the table with my cam choice but i street drive the car and i wanted to keep lower spring pressures since the heads had some cracks in the head bolt areas

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