Post your combos and E.T.s

[PROSTOCKTOM]

Went to the 1/8th mile today, got 8.98 with 1.99 sixty foot at 79 mph. Wish there was a thread where we could ask questions about ETs and such. My pic got erased and I see people saying not to ask questions about ETs so I'm not sure what I can post anymore. Same combo as before but the full manual tranny and 3.90s. It was 88 degrees and 95% humidity. We just baked outside today.

This thread was setup almost 10 years ago for a certain reason.

If even minor discussion is allowed it quickly turns into a run away train and gets off topic really fast.

This topic is maintained the way it was originally intended as an informational resource only.

Please feel free to start any discussions or question/ answer post you wish in another thread.

Tom

 

[Bruce Marihugh]

68 472 with 500 crank bored.020" with 7.1 rods and 10 to 1 Probe pistons. MTS 15 hydraulic roller cam with MTS nonadjustable rockers. Late big chamber heads with 2.11 intake and 1.77 swirl polished valves and a home done port and polish. Vertex mag and Enderle fuel injection with a 6-71 blower@10% overdrive. Blower manifold from MTS. SFI flexplate from MTS. 3600# 1937 Lasalle with a manual shift TH400 with a 2.97 low gear. 9" Ford rear end with a Gleason torsen at a 3.56 ratio. Tires are MT drag radials (not nearly enough tire).
Best 1/8 time 8.554 @ 86.04
Had to get out of it twice because it was smoking the tires and going sideways.
The AEM data logger recorded 12,236 rpm at the finish but I am thinking it was reading double. The manifold pressure was 29lbs which would be 15# of boost.
If I can get it hook up should be able to cut off a couple seconds.

 

[bugzaper]

425
.030 over
0 decked
Flat top stock pistons & rods
Balanced assembly
LUNATI cam / lifters / HD timing chain (working on home made rocker system...)

Specs on cam:

LUNATI
part # 34601
SP1-214-218
Cadillac 472-500

Valve Lift: INT - .460 EXH - .479
Lobe Lift: INT - .271 EXH - .282
ADV DUR: INT 270 EXH 280
DUR@.050 INT 214 EXH 218
VLVE LSH ---- ----
CNTR LN INT 108 EXH 116
TIMING @ .050 TAPPET LIFT
BTDC -1
ABDC 35
BBDC 45
ATDC -7


Decked heads (clean up surface) / 3 angle valve job / home ported
Edelbrock aluminum intake port matched to heads
1 1/2 birch wood spacer with several coats of epoxy applied (home made)
Holley 750 cfm vacuum carb: 72 jets / 35 squirter / 6.5 power valve / white vacuum spring / tan-yellow cam
(been playing around with a 950 double pumper ...)
HEI re-curved dist. with a 7 prong pin (timing retard)
Stock 472 exhaust manifolds with slight porting, into duel 2.5 exhaust pipe into cheap-o turbo type mufflers

Turbo 400 / 2600 stall Allison brand convertor (high dollar...) / shift kit

Ford 9" with 2:73 & 3:50 gearing (likes the 3:50s) / 27" tall tires on Caddy 15x7 steel wheels

1990 C-10 / short bed / lowered / leaf springs / non-air / fuel cell under bed behind rear end

Have yet (10 years since build) to take it to the track but, have pulled a trailer hauling wood and it has all the power one could want!

 

[The Mad Cadder]

I found out my video link no longer works cause it was a photocrap link and since we cant edit posts after a time
here it is .. This was my Cadmaro with the 514 8 to 1 BIG cam Black Widow intake motor on a 10.49 pass

A long time ago

71 Fleetwood 5280 lbs plus me 260 lbs stock well tuned 472 300,000 miles
Open exhaust manifolds

15.8 1/4 mile after the Quadrapig disappeared..cant remember mph
14.7 on nitrous burning rubber for a 1000'

77 Eldorado 425
9.1 to 1
Open exhaust manifolds

16.2. 1/4 mile

71Skylark
76 - 504 pocket ported 902 heads
12.0 to 1
232 @ .050 .528 lift
Geometry corrected Mouse trap rocker arms
turbo 400 stock Caddy converter
4.10
29.5 x 9.5 slicks

13.0 1/4 mile @ 103 mph

512 - same as above with 250@ .050 hyd cam .586 lift
1.75 Harland Sharpe shaft rockers
12.3 to 1
homefit monte headers [ made before adapter flanges were available ]

12.40 1/4 mile @ 110 mph

81 CDV
472 stock bore 9.3 to 1
ported 425 single plane intake
850 Holley dp
236@ .050 hyd cam .568 lift
1.72 shaft rockers
3.23 gear

Very traction limited 13.60


69 Z-28...2960 lbs 3200 with me

514 approx. 8.5 to 1
288 @ .050 .682 lift - .03 lash 102 in 116 ex
1.75 Harland and Sharpe shaft roller rockers
2 Holley 750 d.p
317 cfm @.600 lift heads 240 cfm exhaust. 2.19 in 1.88 ex
3.90 - 57 olds rear end with spool
Ladder Bar car
32.5 x 14.5w slicks
11" 2200 rpm converter
Homebuilt 1 3/4 tube 3" collector headers
10% underdriven 6-71
Boost gauge only showed vacuum

11.19 1/4 mile @119 mph


Changed to 10" Ultimate Street Fighter t.q 38-4200 stall [ more like 46-4800 with the big high comp motor ]

Discovered the belt was bending the pulley down and skipping over it ....Set blower snout pulley spacing 3" back
Still showed no boost

10.49. 1/4 mile @ 127 Going sideways

same 10% OVERDRIVEN
4 lbs boost

10.09 1/4 mile @ 131 mph

After finding out my blower was really a aluminum shaving injector

No BLOWER same motor and converter
Added Black Widow intake and 1150 Dominator
2880 lbs plus me
31.5x14 slicks

10.49 1/4 mile @ 128 mph

524. 14 to 1
274@ .05 .430 lobe lift solid roller. .752 lift -.028 lash with 1.75 rockers ..108 ls installed 3° retarded
330 cfm heads @.600 lift 2.25 in 1.9 ex same exhaust flow numbers

9.65 1/4 mile @ 136.96 mph

Never did get rid of the Wheel hop that caused mid track spinin

The Mad Banana
79 CDV
425
2115 intake
950 Ultra XP
MT10 cam installed straight up
Cadco headers
3.23 Caddy rear end with Eaton Posi
275x60x15 Coopers

Made several passes but had a sheetload of trouble with stupid things like trans not shifting
etc.. Still ran 14.7 @98 mph..
didn't shift until 5700 and went from 1st to 3rd gear
with obvious major traction issues and tossed the belts
from the 1/4 mile mph it should have easily ran mid 13's

Hopefull update with the Mad Banana Boogieman motor soon

 

[Roy Heisenberg]

Here is my bestest combo so far...

1975 Jeep J-20 with 472 Caddy bored .030
Sanderson Headers
2115 ported intake
Ported heads from 1968
Holley 850 Double-Pumper
Mystery Cam from Pops in Fargo, North Dakota
Full tank of 100 Low Lead Av-Gas from my friend at the local airport
Crappy Uni-RoyAL radials
Turbo Hydro 400 tranny with a shift-kit from B&M
Jegs sticker on the front bumper
Caddy Hood Ornament for good luck

Ran 15.82 in 2WDrive High on the Dana-20 Transfer Case 15.82 in the Quarter Mile

 

[48Austin]

What is "low lead" av-gas?

 

[Roy Heisenberg]

What is "low lead" av-gas?

100 octane low lead is what you put in your Cessna 185 or Vans RV-7... it says low lead, but it is full on race gas with high Tetra-ethyl Lead. Lasts for 3 years in the tank, and makes big HP.

 

[48Austin]

AV-gas has no lead and is NOT race gas. Lead is an after WWII additive to get rid of detenation in high compression automotive engines.

 

[48Austin]

Oh sorry Tom, Just got pissed.

 

[Roy Heisenberg]

Howdy,

Here is the real scoop on my favorite fuel. 100aLowLead - Blue 100LL
https://en.m.wikipedia.org/wiki/Avgas

 

[Cadillac Kid 1]

Well,
the weather finally cooperated and I was able to take my 5000# sled (73 coupe de Ville) to the strip last night. 511 inches with Probe 10:1, K-1 rods, MTS CNC iron heads, Lunati roller cam, etc, etc, etc.
Still having a problem hooking up and still need to learn how to drive. I went into the 6200 RPM limiter a couple of times, but my best run with a slippery 2.0 60" was 12.7 at a bit over 108 MPH. Motor was pulling strong, just need to hook up better.
Greg Surfas

 

[5one9]

Very cool

 

[48Austin]

AV gas DOES NOT contain lead. All an aircraft needs is a fouled plug at 25000 feet! I learned this from WWII fighter piolets. And mechanics.

 

[Cadillac Kid 1]

Aviation gasoline commonly known as 100LL does in fact have lead in it. the LL stands for low lead and it contains .56 grams of lead per litre of gasoline. As far as plug fouling part of the standard run up consists of checking for mag drop and leaning to burn off any contaminants if the drop is excessive (meaning fouled plugs).
As you fly you continually lean the mixture to maintain clean burning.
Greg Surfas

 

[cadillac512]

Well,
the weather finally cooperated and I was able to take my 5000# sled (73 coupe de Ville) to the strip last night. 511 inches with Probe 10:1, K-1 rods, MTS CNC iron heads, Lunati roller cam, etc, etc, etc.
Still having a problem hooking up and still need to learn how to drive. I went into the 6200 RPM limiter a couple of times, but my best run with a slippery 2.0 60" was 12.7 at a bit over 108 MPH. Motor was pulling strong, just need to hook up better.
Greg Surfas

Well done. That's making excellent power!

Terry

 

[Cadillac Kid 1]

Well done. That's making excellent power!

Terry

Thanks Terry. With my 7 quart, baffled oil pan, external oil line to the back of the galleries, and a good pump 6000 is a comfortable speed for this motor. I just need to hook up better and not break any thing and I'll be more than happy.
Greg Surfas

 

[Darius]

Kid 1,

Just catching up to your accomplishment. Well done!

Looking at a "quarter mile times and power" software that I use indicates approximately 482 HP to the tires on that 12.7 second run. Does that seem about right to you and to others? If so, that would put a 3200 LB. ride in the high 10.s. Not at all shabby.

Congratulations!

bro. d

 

[Psychoholic]

What kinds of tires are you on and how tall are they?

I certainly wouldn't even remotely suggest putting anything super sticky on there unless you're ready to build a new rear end and have a fresh driveshaft made! As much torque as I bet you're making I suspect you are just blowing the tires off into oblivion no matter how hot you get them.

 

[Cadillac Kid 1]

Kid 1,

Just catching up to your accomplishment. Well done!

Looking at a "quarter mile times and power" software that I use indicates approximately 482 HP to the tires on that 12.7 second run. Does that seem about right to you and to others? If so, that would put a 3200 LB. ride in the high 10.s. Not at all shabby.

Congratulations!

bro. d

bro d.
It is interesting that you have faith in software. I use "Dyno Sim 5" and Drag Sim 5.
I put all the components and specifications of my motor into dyno sim and it came up with a motor performance graph and table. I then "put" that motor into drag sim along with all the physical characteristics including track conditions and weather and ran it.
The actual race day results for both ET and MPH were within 3% (ET) and 2-1/2% MPH.
None of the results take into account my running up into the rev limiter in second gear, and the problems hooking up. The computer said 1.7 second 60" and my best was 2.08.
Better tires and learn to drive.
Greg Surfas
I forgot, the Dyno Sim conclusion was that I had 560 HP flywheel HP, so it just might be that

 

[Cadillac Kid 1]

What kinds of tires are you on and how tall are they?

I certainly wouldn't even remotely suggest putting anything super sticky on there unless you're ready to build a new rear end and have a fresh driveshaft made! As much torque as I bet you're making I suspect you are just blowing the tires off into oblivion no matter how hot you get them.

Current tires are 29 inch (275 x 60 x 15) MT street legal drag radials. They are the biggest I can get under the fenders. To tub this car would be a major undertaking, not worth the time and money (in y estimation), so I am going to something like a 29" MT ET drag slicks. A little taller at 29.9 inches and a wider section width, How do i do it? Can't go in, then go out. Radius the fenders and select the wheels accordingly.
I'm hoping my Moser 9" and 1000 HP drive shaft are up to the job.
Greg Surfas