earthmover said

http://www.moparts.org/

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earthmover
enthusiast


Reged: Aug 11 2007
Loc: nc small block help needed
#5904717 - Sat Apr 03 2010 03:41 AM Edit Reply Quote Quick Reply
well guys i went out to tnt tonight and it was ok but could be better...1st here is the combo
340 bored 30
stock stroke crank with h beams and dome tops
j heads with clean up 240/140@500
comp cam 244/252@50 solid cam 520/540 with 1.5 roller rockers
x-cal intake port match to head with 1" open spacer,950hp 82/88jet 6.5 pv fr/no pv bk pick cam
36 timing locked out with a open spacer
727 with 9.5 verta 5000 that flash at 4000
with 4.57 gears and 28/10.5 slick m/t@13psi.
electric water pump drive and alum radi.
best last yr of 7.54@89.?? and 1.67'/with 111 fuel
with the 950 the car will bust up at the end of the track (1/8) right at the end light at finish.
so next run
new best of a .095 rea.
1.663 60'
4.761 330
7.440 1/[email protected]
tire psi i thought was 12 but was realy 7
next run the computer was down and i think was my best but on time ...([Edited by Moparts - Family Friendly Site - Keep it clean])
then computer went down(i thought was the best time)-----------------------------------
next time i made some changes/100oct. fuel
went to a 750 aed/ho with a 4 hole spacer
with i thought was 11psi but was 16 and went
-.067 rea.
4.839 /330
7.534 1/[email protected]
10psi
rea. .006
4.831 330
[email protected]
next run was 13 psi
rea. -.127
4.894 330
[email protected]

now my car went the fastest with best time with the 950hp and (i think 17psi in the tire)
but my best mph was with the 750aed/ho at 90.005mph

what makes the 950 bust up at the end of the track???sounds like the valve spring going bad...but then i put the 750 on and run out the back door....
now with the 950 it seems that the carb would spin worst then go..(my buddy said he can hear the car spinning the wheel he was on the track with me)but the 750 did not spin as bad or leave as hard but ran out the back door....what should i do work on the 950 or get a 750???? the verta would flash 4000 at about 10mph from a roll, i did get to check that....at 1st i thought i needed some new springs but now i am lost so i thought i would ask the pro's.....i know the car has more in it but where should i start with it????so come on small block guys help me out.. i learned that me tire press. gauge was so far off like 5psi then i change that psi after the 2nd time pass
so do you guys think carb is to big or just need to work on it???

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