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Old 05-09-2010, 09:17 PM
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iambigperm iambigperm is offline
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Please critique my setup! I may have mismatched some stuff...

I took my 84 Regal to the strip this weekend for the first time with my new combo and the results were a tad disappointing. Here was my best pass:

60' 1.843
330 5.241
1/8th 8.104
MPH 85.95
1000 10.568
ET 12.680
MPH 106.13

Air temp was about 70 degrees. Racing at night in Las Vegas....

I shifted 1-2 at 6200, 2-3 at 5700, 3-4 at 5700

Now here is my setup:
383 sbc
Forged flat top pistons w/2 valve reliefs
Eagle rods, stock crank (all balanced of course)
Engine Quest Heads. 200cc intake runners, 64 cc chambers
Crower Solid Roller 00426S grind
ADV Duration 288/290 Lift .570 .584
Duration @ .050 250/252
108 Lobe Center
.026/.028 Valve clearance
Cam was degreed
Comp 1.5 Stainless Rockers
Crower springs (matched to cam)
Cloyes aluminum timing cover with thrust bearing
Victor JR intake
Holley 750 Vacuum Secondary w/ choke horn removed. Jets 72/81, high flow power valve(4.5")
Holley Red fuel pump
MSD Pro Billet HEI distributor, MSD Wires, Accel shorty plugs
Hooker headers, small primaries, 3" collectors
3" dual exhaust w/x-pipe, no cats, mandrel bent
700R4 Trans, fully built, full manual valve body
JW Custom 4000 Stall 10" w/full size lockup plate.
4.56 Gears (Maybe too low but I changed to these because with the 3.73's I couldn't use overdrive unless I was really breaking the speed limit. My last motor had a large solid cam and it wouldn't cruise under 2000rpm)
Total timing is set to 39 degrees
27x11.50x15 Hoosiers
Car weighs 3390 lbs
Running race gas at the track

I have a fuel pressure gauge in the car and it reads at least 4 psi all the way to redline. I also have a wideband air/fuel meter and it reads 13.0 all the way up. Aside from the 1/2 shift, power really drops off at about 5800 rpm. With this setup I was really expecting to be shifting around 7k. There was no hesitation or missfire during the runs and I never lost traction. Someone suggested I might have too much gear and converter, but this thing drives great, even on the street. I was launching at about 2,000 rpm on the footbrake and it was flashing to 3400 or so. For a 4000 stall, this thing drives pretty tight. I did build this as a street car and would like to see it in the 11.50 range in the quarter mile. I don't think this should be a problem. Any ideas? One thought I've had is that maybe my wideband isn't reading correctly after all the lead I've ran through it. Any ideas anybody? Sorry for the long post, but I tried to be thorough.

Thanks!
Marcus
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