Post your 12 /13 Second 455 combos!

Older combination.

Full weight '70 GS.
Untouched 45,000 mile '71 short block (std bore - cast pistons)
'70 Stage 1 heads, no porting, shaved enough to ensure they were flat, 0.020" steel head gaskets.
KB MkC118 cam and KB "Stage 1" springs, stock replacement timing set. Stock steel rockers.
B4B intake no porting.
'71 7041242 Q-jet with stock (75 Jets - 45b primary rods - AU secondary rods) Stage 1 jetting.
MSD 6AL ignition box - Chrysler magnetic pick up in GM distributor w/20 degree(at crank) total advance in by 2300 rpm. Total timing set to 30 degrees BTDC.
MT headers, 2-1/2" exhaust with Sonic (short) Turbo mufflers.
Too loose (3600 flash stall) 10" TCI converter on rebuilt TH 400.
12 Bolt rear w/3.90:1 gears.
M&H DOT 275-60-15 rear tires.

Best ET was 13.11 seconds at 103.5 mph. Probably could have achieved an ET in the 12's with this combo with some timing and jetting adjustment, but was fighting a weak battery all weekend. Just goes to show very low 13's are doable with bolt on parts.

 

John, that was the old combo that ran 13.80s-14.00s; it was at about 95 mph. Last summer we swapped in a livelier engine. .030 455, forged pistons, Stage 1 heads, TA 290/94H cam, Hughes GM20BPO converter, and upgraded to TA’s 2.5” exhaust with Walker 17748 long case mufflers. Only got two clean passes at BG in October but ran 13.13 and 13.12 at 101. Both this engine and the 13.80 mill were topped with a John Osborne built 800cfm qjet. I’m hoping with some test and tune I can drive it into the high 12s. (With the new cam it doesn’t go ‘wubwubwub’ anymore. More like ‘whumpathumpatathumpa’.)
Patrick

 

When I first started racing.....25ish years ago, had a stk bottom end 455 out of big car, re refreshed at home, std bore and crank, factory cast pistons, lunati version of hemi killer cam, stage1 plus spring, converted stage1 heads that I sold to a member here the other year, some mild but well done port work by john z, sp1 850 holley then, 4.1 gears, tci 3000 stall, th400, think car and driver was 3900+ then. Went 12.0s like a printer. I made more money with that combo. Why did I ever want to go faster

 

Almost identical to my old 430, but mine was with 4000 stall and 3.73's at 3500lbs 11.72/114 was my best. Built 23 yrs. ago, sitting on a stand in the garage ready to go.

 

Not judging, but that's a lot of weight!

 

73Regal 4340lbs with driver. Std bore blue block 455,std rods and pistons. 70heads with stage1 valves and springs and 160 roller rockers,Stage 1 t/a cam.Factory intakeand 830Q/jet .S/P 400 with 323 gears and275/50/15 Ta drag radials. Best pass 13.01@ 101.3 with 191 60 foot time at New England Dragway.T/a comp headers with 2.5 exhaust.

 

My "stock appearing " 68 skylark runs consistently in the 12.40's up into the low 12.60's depending on the weather. it has a 72 455 +030, speed pro pistons at zero deck, stock rods and crank, home ported heads with stage 1 valves, Poston 113a cam, adjustable pushrods and 67-69 style rockers, performer intake with a Dave Hemker prepped 800 q-jet, Jim Rodgers exhaust manifolds, 2.5 inch exhaust, pertronics in a stock distributor, total advance 32, stage 1 fuel pump, 10 inch TCI convertor, TH400, 12 bolt with 3.55's, 255 60 15 MT drag radials, power steering brakes and windows. I built the short block in 1995 and it has been in 3 different cars since then

 

Pretty sure I saw this in person at Lebanon, and the 350 stickers totally threw me when talking to you!

 

Freshened, but stock, 71 GS455
Added Performer intake (original QJ)
TA headers
TA 2.5" exhaust
Walker Dynomax mufflers
3.42 limited slip
13:42 @101

72 Skylark
76 455 - stock, but running good
TA_286-08H cam
TA Roller rockers (I think 1.5)
TA valve springs
Modified stage 1 heads off of a 10-sec race car (raised intake ports with matching SP1)
850 Holley
Mallory Comp 9000 distributor
TA Headers
3" exhaust with Walker mufflers
~3000 stall TH350
2.56 open rear (!?) hadn't done the rear yet.
13.50 @ 108 mph, crossing in 2nd gear.

I think this is the engine currently in CJP69's GS400 convert now, although it was rebuilt due to spinning it a little much on the 2nd or 3rd pass.

 

3790 lbs on my car had a xtra 0 for laughs

 

Full weight '71 GS. 3975 with me in it
72 Short block rebuilt with std low compression TRW kit in the late 70's - standard bore, 36 CC dish
'73 Small Valve heads, no porting, ,051 Fel Pro Blues (expected them to be .043!)
Comp C115 cam advanced a total of 10 degrees, stock Buick springs with damper, , Rollmaster timing set. Stock steel rockers, later style (pushrods did rub on head)
Performer intake, no porting.
'71 7041540 Q-jet with 73 Jets - 44 primary rods - CK secondary rods - prepped by Everyday Performance
Pertronix III in 077 71 Electra GM distributor w/24 degrees (at crank) total advance in by 3000 rpm. Total timing set to 36 degrees BTDC. (prepped by Everyday Performance)
Unknown small tube headers, 2-1/2" exhaust with X-pipe and Dynomax 20 inch mufflers.
Unknown 10 inch converter, maybe 3000 rpm stall converter on a PS code TH 400 (69 Pontiac 350 HO)
Governor modded to Stage 1 specs, shifts at 5300
8.5t rear w/3.73:1 gears, stock Eaton 408 Posi (prepped by Everyday Performance)
Full tread Cooper Cobra 245-60-15 street radials, 23 lbs rear
Airlift bags (L 10 lbs, R 25 lbs), rear sway bar, frame braces, stock ride height.
Consistent high 12's (except 13'0's at just about every Muslepalooza, it wouldnt run 12's when stands are full), low 1.8 60 fts
Best of 12.75 @ 104.9, 1.83 60 ft

Note - This post updates my original post from 2017 or whenever..

 

Not a 455 but still:
Full weight '65 Gran Sport Convertible. 3975 with me in it
66 Short block rebuilt with Telasco pistons, 29.3 cc dome, 9.75 compression, .030 over for 409CID
'64 heads with 11/32nds valves , LT1 springs- 1.90/1.50 valves, "blessed" by Bob ( 66GSConv, RIP)
Camcraft Cams 218/222 110 LSA, installed straight up
Factory Q-Jet Intake - Doc Modded
'79 17059247 M4M Q-jet with 73 Jets - 44 primary rods - CK secondary rods - prepped by Everyday Performance
Pertronix III in GM distributor w/22 degrees (at crank) total advance in by 3000 rpm. Total timing set to 36 degrees BTDC. (prepped by Everyday Performance)
Stock GS manifolds, 2,5 Inch mandrel bent system, X-pipe and long case Dynomax mofflers
ST300 with switch pitch, stock stall converter with balloon plate
Governor modded to shifts at 5200
8.5 rear w/3.42:1 gears, stock Eaton 408 Posi (prepped by Everyday Performance)
Full tread Hankook whitewall 215/75/14 street radials, 23 lbs rear
Airlift bags (L 10 lbs, R 25 lbs), rear sway bar, frame braces, stock ride height.
Consistent high 13's , best of 13.85 @ 99.0 with a 1.99 60 ft

 

Not a 455 either:
Full weight 1967 Buick Riviera, 4515 lbs on the scale at Lebanon Valley
Stock 430 shortblock
Ported Stage 1 heads, allegedly 270/180 cfm
Spreadbore B4B
Cliff Ruggles 850 cfm Quadrajet
DUI HEI distributor
GS-113A camshaft 232/246 .510/.491 lift 1.59 ratio rockers
Stock 3.42 posi rear
Shorty headers, TA 2.5" exhaust and Ultraflo mufflers
ST400 with ST300 12" converter, manual switch
Best 1/4: 13.865 @ 98.8 on a crappy DA day of 2300'
Best 60': 2.07, needs a better torque converter

 

New Motor:

Full weight '71 GS. 3975 with me in it - bucket/console, PS/disc PB/Tilt, non air
70 SF short block rebuilt with .030 TA/Speedpro pistons, .007 in the hole, 23 cc dish - 10.0:1 compression, runs on 87 Octane/races on 93.
GM cover, Melling gears, TA booster plate and regulator - Full oil mods w/ LS style grooved mains - 75 lbs @5500, 35 lbs at idle
Stock Stage 1 fuel pump and lines
TA Orange Crush gaskets, .045 quench
71 Stage 1 heads, 71 CC chamber, light bowl work and gasket matched, Performance valve job.
Camcraft 218/230 cam on 110, installed straight up. 8.0 DCR. 15" vacuum @ idle, CAN get 16 mpg (not often)
NOS GM hydraulic lifters (HL-57), Smith Bros adjustable pushrods, 67 "215/216" OEM 1.59 rockers on TRW shafts. TA1125 springs
70 Iron intake - plenum opened between primaries/secondaries
'71 7041540 Q-jet with 73 Jets - 44 primary rods - CC secondary rods, C hanger - prepped by Everyday Performance
Pertronix III in 077 71 Electra GM distributor w/22 degrees (at crank) total advance in by 3000 rpm. FAST PS50 coil. Total timing set to 36 degrees BTDC. (prepped by Everyday Performance)
'67 iron exhaust manifolds, prepped by Jim Rogers
Dyno'd at 415 hp/501 tq in this config. Seems to have loosened up since
Earrick Racing 10 inch converter, maybe 2800 rpm stall on a stock PS code TH 400 (69 Pontiac 350 HO)
Governor modded to Stage 1 specs, auto shifts at 5300
8.5 rear w/3.73:1 gears, stock Eaton 408 Posi (prepped by Everyday Performance), traps at +/- 5600 rpm
Full tread Cooper Cobra 245-60-15 street radials, 23 lbs rear
Airlift bags (L 10 lbs, R 25 lbs), rear sway bar, frame braces, stock ride height.

Best of 12.47 @ 106.0, 1.77 60 ft

Note - This post updates my original post from 2017 or whenever..

 

This is dyno'd at the wheels right?
You put some great thought in all 3 of your cars builds

 

Hey thanks, and no that was on an engine dyno - 400 through regular manifolds, 415 with Jims manifolds and 435 with headers. I didnt think anything of it because its really a pretty stock small cammed motor. I say it must have loosened up cause now it's running 106 in the quarter and thats generally recognized as 360 hp at the wheels (in a 4000 lb car). Depending on how you make the jump from RWHP to Flywheel HP, thats 440-450 hp at the crank. I've tweaked it a little (colder plugs, smaller crank pulley, etc..) but nothing significant. And I should probably clarify all that was with 68-69 1.55 rockers and Johnson lifters that wouldnt pull through 5500 (thanks Jim Weise , you were right)

 

Mine is a tough one as it’s been 1/8th mile running JR Street with my son. 462, not sure if compression, stage 1 heads, Holly HP950, TA SP-1, Poston 112 cam, Hooker Pro Comp Headers,3200 stall, built turbo 400, QP 9 inch with 3.70s, and running 275-60-15 drag radials. Letting the car shift itself, its best was a 8.5 in the 1/8th, with a race weight of 4600-4700 lbs IIRC. I have weights and sand bags to slow the car down for his class.

 

1973 Stage-1
Built in the late 90’s
.030” over / 9.2:1 / TRW L2353 Forged Pistons
Lunati 224/230 - .480/.483 – 112 installed at 106
B4B with 1” Open Spacer and AED 850 HO Carb
Greg Gessler Street/Strip Ported Heads
Shorty Headers, 3” to 2.5” X and UltraFlo Stainless Mufflers
MSD 6T with MSD Billet Distributor
All ARP Bolts
700R4 with 2500 stall converter
3.42 Eaton Posi
Southside Machine Lift Bars
275-60-15 BF Goodrich Drag Radials
Weight: 4425 with me
Best: 13.15 @102

 

71. Bittersweet mist skylark. 73 455 first engine, I rebuilt, hone cylinders, new rings, bearings rebuilt stock, 73 heads stock 73 intake, 70 stage one carburetor and fuel pump. Stock dist. KB 118 cam. KB headers, Stock TH 350 and converter. 2.93 posi street tires. The car ran 13.67 at 102 mph. Car would finally shift in the third going through the lights.