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#1
03-08-2018, 08:53 PM
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10.00 HP
How much HP is needed to go 9.90-10.10 in a race weight 2850lb car. Building a new power plant and trying to come up with the right combo. Thanks
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1984 TA, 400 PONTIAC, th-400, 4.10 12 bolt 10.49@ 127mph 1.40 60' R/U Pontiacs in the Park 2006(SAT) R/U Pontiacs in the Park 2007(SUN) |
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#2
03-08-2018, 09:09 PM
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600 near sea level.
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#3
03-08-2018, 09:32 PM
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Won't take much to do it there are literally tons of ways to get there. Good stock block...4 bolt mains with good caps and lifter braces...decent set of heads,a solid roller cam with stud girdles and your pretty much there. A good 5k+ converter and your runnin 9's all day long
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"You have to evaluate the past,Focus on the future,and that tells you what you have to do in the present"--Lou Holtz “It’s the process it takes to get to goals that sets us apart, the execution on every single play, one play,one life” Notre Dame Head Coach Marcus Freeman 69 GTO NHRA Super Street Car 2860lbs 10.890@157.08 MPH in Iowa in June’23 ,157.56 MPH in Gainesville in March ‘23 |
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#4
03-08-2018, 09:37 PM
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600 hp is right. Is that still 300 cfm heads?
...got a 2-bolt block (drilled for 2-bolt) that has been mid-9" in a door car. Looks fine. |
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#5
03-08-2018, 10:40 PM
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Quote:
Brian
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 Boobs & bacon 
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#6
03-08-2018, 11:18 PM
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Was going to start with 461ci. Looks like I'll need heads, currently 670s that flow 230cfm, guess they won't cut it
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1984 TA, 400 PONTIAC, th-400, 4.10 12 bolt 10.49@ 127mph 1.40 60' R/U Pontiacs in the Park 2006(SAT) R/U Pontiacs in the Park 2007(SUN) |
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#7
03-09-2018, 07:26 AM
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The 670s will cut it if they get ported to 275 cfm and chambers get machined out to later open style!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#8
03-09-2018, 01:13 PM
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I went 9.99 10.00 in 1995 3000 lb car 455 ra4 heads and a hyd flat tappet cam no need for expensive valve train to run numbers u want to
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2008KRE Q16 Winner 2014 atco raceway doorslammer winner 86 grand am tube car 8.95 @152 455 eheads solid flat tappet cam Hoffman Racing building and racing Pontiacs for 35 years |
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#9
03-09-2018, 01:58 PM
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Quote:
http://www.wallaceracing.com/hpcalculatorquarter.php |
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#10
03-09-2018, 04:20 PM
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Are you guys talking 600 HP at the flywheel?
__________________
 3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#11
03-09-2018, 09:32 PM
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Do you need to run 10 flat in all weather conditions?
May need more power for july / august. |
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#12
03-10-2018, 04:12 PM
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600 at the tires.
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#13
03-10-2018, 09:39 PM
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Less than 600 at the flywheel COULD get you 10 flats... POSSIBLY less than 570 hp... However it would be best to build to 600 + hp and dial back if need be.
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#14
03-11-2018, 12:04 AM
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2 bolt factory blocks with studs are good to 600-650HP. Not really worth it to do the billet cap thing anymore.
SD Performance has a 265+ cfm CNC program for 670s. Its around 1600$ for a complete pair of heads ( your cores) setup for Solid roller. I had a set of 48s done and they went 272cfm. 600HP is not hard with those heads. The guy I sold them to (never run) has them for sale for less than I got for them. 2,000$. Worth every penny. Cores are worth 400$. They have full bronze guides, hardened seats, Ti retainers, filled crossovers. 69-70ccs. Great heads, wish I did not sell them. |
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#15
03-11-2018, 09:41 AM
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According to Wallace, my 3100 # car with driver that went 10.05 has 543 HP at the rear tires and 603 HP at the flywheel.
__________________
3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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