1970 Pontiac 455ci
                               (Spring 2007)
                                                    
                        Click icon for Pictures
Indented Use: Street/Strip       Competition Class: Bracket            Track Size: ¼ mile
Cam Type: Hydraulic              Cam: XA274
Street/Strip, compression ratio ~ 9:53:1
1970 455 Pontiac block, Butler Rotating assembly 467ci
Pro-P455C 4-Bolt Main Caps
Kaufman Aluminum D-port heads 85cc (Machine work by Performance Engine and Machine)
Automatic Transmission TH400 (Bob Unger - Sauk City Wisconsin)
Engine: 1970 Pontiac 455    Total Cubic Inches: 467     Cylinders: 8
Compression Ratio:  9:53:1       Bore; 4.181”    Stroke: 4.250”     Rod Length: 6.8”
Casting Number of Heads: n/a    Rocker Ratio: 1.5     Stock or Ported Heads: Ported by Tri-Mark – 85cc
Valve Diameter:  Intake – 2.11”             Exhaust – 1.77”
Carbureted or Injection: Carbureted
Nitrous: Not Yet
Intake Type and Manufacturer: Edlebrock Performer RPM - Jeg's - 03507156
Piston Brand: Ross D-Dished (custom to make 9:53 compression ratio)
Transmission type: TH400 (Bob Unger - Sauk City Wisconsin)
Converter Brand: TCI #240901 Breakaway with Nitrous anti-blooming plate    Stall Speed: 2400 - 2600     Trans Brake: No
Rear Axel Ratio: One wheel wonder at 2.79
Tire Size & Type: Goodrich 225/70R 15
Chassis Style: A Body    Year: 1970     Weight: 3641 (standard production weight)
Type and Brand of Cam: CCA-51-224-4      274 I - 286 E    .488 I - .491 E
                                                                 230 I - 236 E
RPM Range During Competition:?                       Maximum Range:?

Parts from Butler Performance           http://www.jbp-pontiac.com/index.html  
 

        467-474 cu. in.
            for 428-455

467-474 cu. in. Rotating Assembly

 

 

Note: Custom Pistons – D-Dish 9.53:1 compression ratio  (for use with Kauffman Aluminum D-port heads – 85cc)
Note: Rods with 230,000-psi rod bolts (APR2000)

 

PRO-P455C

Pontiac 455 Steel 4-Bolt Main Caps with Dowel Pins (Set of 3)

 

 

ARP-194-5601

Main Stud Kit 4 Bolt

 

 

APE-N538

1969-1979 PONTIAC TIMING COVER-11 Bolt 350-455. THIS IS AN EXACT DIECAST REPRODUCTION OF THE OEM GM TIMING COVER.

 

 

GMP-9796347

69 and up Water Pump Sleeves to Timing Cover 69 and up

 

 

GMP-9796349-1

69 and Up Water Pump Plate

 

 

BRW-1649

11-Bolt 1969 1/2-77 Pontiac Hi-Volume Aluminum Water Pump-FlowKooler

 

 

PPR-90020

Pontiac 69-79 SFI Approved Balancer/ 4-bolt

 

 

CCA-51-224-4

Hi-Performance street, very strong mid range headers and mild stall.

274 I - 286 E
230 I - 236 E

.488 I - .491 E

110

1800-6000

 

NIC-10120 - .005

Billet Gear Timing Set

 

APE-N242A

64-72 GTO/Lemans Mity Mount Steel Reinforced Rubber Engine Mount (Set)

 

 

CAN-15-400

Pontiac 8" High Capacity Oil Pan- 7 Qt.-Requires CAN 15-401 pick-up

 

 

CAN-15-401

Pickup for 15-400 & 15-452 Pans

 

Ferrea Ultimate Race Valves
The 6000 series competition valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. These valves are manufactured using an exclusive two step slow forging process using EV8 stainless steel on both intake and exhaust valves. The valves feature flow improvements, to deliver the power needed for today's sophisticated racing engines.

FER-F6174
2.110 x 5.095 x 45 Deg. Ferrea Comp. Int. Valve (Single) (670, 16, 62, 13, 12, 48, AND 061 HEADS - MAY BE USED IN 4X, 6X, 96, 7K3, AND 5C HEADS FOR TALLER SPRING HEIGHT. MUST USE A LONGER PUSHROD)
FER-F6176
1.770 X 5.110 X45 Deg. Ferrea Comp. Exh. Valve (Single) (670, 16, 62, 13, 12, 48, AND 061 HEADS - MAY BE USED IN 4X, 6X, 96, 7K3, AND 5C HEADS FOR TALLER SPRING HEIGHT. MUST USE A LONGER PUSHROD)

ANG-P1507

1.50 Roller Rockers-Made in the USA

  

SBR-5116-9400-16

9.400 X 116 x 5/16 Chromemoly Custom Pushrods (Set)

 

CCA-852-16

Std. Pontiac Hyd Lifter

 

PEP-PRK-382-16

7/16 Rocker Arm Studs 

0070190-4305

Jeg's - Head Studs Pontiac Ram Air V

03751016

Jeg's - Head Gasket Pontiac V8

Doug's Headers by Doug Thorley
THE BEST CHOICE FOR MOST PONTIAC APPLICATIONS

DHE-590-C

1968-72 GTO
LeMans
Tempest

389-455 with D-Port Heads - 1 3/4" Pipe, 3" Collector (Ceramic Coating)

055530751

Jeg's

Exhaust Cut outs 2.5" (2 each)

Parts from Kauffman Racing Equipment         http://www.krepower.com
                   

Blank set of Kauffman Aluminum Pontiac D-port heads - Machine work completed by Performance Engine and Machine
SFI approved Flex Plate 

 

Machining and assembly - Performance Engine and Machine  - http://www.perfengine.com
                                                  

This is my second engine built by these guys and so far so good.
Both are running strong. 347 stroked Mustang (my son's car) and my 455 Pontiac.
Keith and his crew have been very technically helpful and patience with my questions.
I hope I'll be going back again someday... 

Resurface Block
Magnaflux Block and crank (found a crack in the original crank)
Partial Balance assemble (the Butler rotating assembly comes pre-balanced)
Bore Block
Hone
Deburr Block
Install cam bearings
Align Bore
Degrease Block
Pressure test block
Assemble short block
R&R pistons on rods
P-4 Dura-Bond cam bearing set
M-54F Melling oil pump
Ks2616 Felpro gasket set

Heads (I bought blank Kauffman Aluminum Pontiac D-port heads and had Performance Engine and Machine do the machine work)
Machine perches
Size guides
Performance Engine and Machine sent the heads for port work to:
Performance Heads Click here to view head porting pictures
506 PBM chrome-moly retainer set
343530 PBM valve seals
3300 PBM valve springs
203 PBM 10° machined lock set

Spark Plug wire set    Taylor    73053
Fuel Filter    PBM    879060
#6 braided Hose (They sell it by the inchl)

Miscellaneous Parts not listed above:
Speedometer Cable - NAPA - 6151612
Heater Core - NAPA - 660-3024 
Valve Cover Chrome - Summit - MRG-9805
Ultra-Seal VC Gasket Pontiac - Summit - MRG-5869
Pro Torque Starter Old/Pontiac - Summit - SUM-820311
Spark Plugs - NAPA - NGK Racing plugs heat range 7 (non-projected)
70-72 "455" RKR PNL EMBS, PR - AMES - C103K (Wife got me these for my birthday)
Fuel Pump Pontiac 110GPH Holly - Jeg's - 051012-389-11
Trans Cooler, Super cooler 28,000 GVW - Jeg's - 013070266
Hurst V-Matic Univ 3 Speed shifter - Jeg's -  0530383-8520
Trans Mount H/D-GM-Yellow - Jeg's - 0890952500

Miscellaneous info...
Pontiac block casting number (1970 – 9799140)     http://www.allmusclecars.com/potniac/pbc.htm
Casting number ?
 Front left by deck         0348500
 YH               (1970 360hp, B body, TH400, L-75, 4 barrel carb, 4 bolt mains, HO)
 
Front left on side           0P195947
Front left on side           GM – 8
                                     D . N
Front right side: 455
# 1 main = 3 holes    
#2, 3, 4 mains = 2 holes
Rear Main = 1 hole
Back by distributor       6917