Toll Free Order Line: 1-877-298-5039
ATI Performance Products logo Products CW3 Converter Welding Equipment News Order
Corner Spacer
 
 
spacer
Home > Products > Flexplates

Superplate® High HP Flexplate
s





Coming soon! 166 tooth flexplates to fit all popular size SFI 6.3 spec cans!
  In ATI’s tradition of staying ahead of rampant increases in HP, which are commonplace in the performance industry today, ATI has developed the Superplate flexplate.

Superplates are manufactured from a super-strong material with a 90,000 lbs. tensile strength and 80,000 lbs. yield strength to withstand thousands of cycles. Superplates are laser machined to avoid the heat and stress stamping inflicts on them. The crank bolt holes are bored in position to exacting tolerances in both size and location on CNC machines. The Superplate uses the "grip length" of the 6 or 8 crank bolts as dowels to prevent the plate from moving under high torque conditions.

Unlike "billet plates" that violate the "flex principle" of a flexplate, the Superplate flexes like OEM plates are designed to do, absorbing the numerous machining tolerances that exist in our "non exact" world.

ATI Superplates are neutral balanced for use in internally balanced engines and exceed SFI 29.1 & 29.2 ratings.

Starters for ATI Flexplates

Crank Adapters for Extra Thick Midplates


General Motors
- For internally balanced engines

APPLICATION
PART #
ENGINE GROUP
BOLT SIZE
TEETH
PRICE
Chevy SB - High HP - standard holes
915544
Chevy V8
168
$219.95
6 Bolt Crank - SBC & BBC V8 with
2-piece rear seal crank flange
915554
Chevy V8
7/16"
168
$242.00
6 Bolt Crank - SBC & BBC V8 with
2-piece rear seal crank flange
915555*
Chevy V8
7/16"
139 - 10DP
$299.00
6 Bolt Crank - SBC & BBC V8 with
2-piece rear seal crank flange
915548
Chevy V8
1/2"
168
$299.00
6 Bolt Crank - Chevy 2-piece rear seal crank flange crank flange
915556*
Chevy V8
1/2"
139 - 10DP
$299.00
Chevy - with aftermarket crank with 8-bolt Chrysler flange
915547
Chevy V8
1/2"
168
$299.00
Chevy - with aftermarket crank with 8-bolt Chrysler flange
915557*
Chevy V8
1/2"
139 - 10DP
$299.00
* needs special starter

Chrysler V8 - For internally balanced engines

APPLICATION
PART #
ENGINE GROUP
BOLT SIZE
TEETH
PRICE
6 Bolt Crank
915558
Chrysler V8
1/2"
130
$299.00
8 Bolt Crank
915549
Chrysler V8
1/2"
130
$299.00
8 Bolt Crank (Chevy starter)
915547 [1]
Chrysler V8
1/2"
168
$299.00
8 Bolt Crank (relocate starter)
915557 [1]
Chrysler V8
1/2"
139 - 10DP
$299.00
[1] Fits Chevy motors with aftermarket crank with 8-bolt Chrysler flange


SFI Flexplates



  ATI Flexplates are created from custom drawn SFI-spec chromoloy steel and are SFI 29.1 Certified.

The flexplates are double MIG/TIG welded for additional strength and lasting precision pass after pass. Each ATI flexplate is manufactured and toleranced from OEM drawings to ensure a precise fit and location.

Each plate is quality inspected to EXCEED the flatness and run-out tolerances of the OEM units and is precision balanced on Hines digital equipment with a resolution of 0.10 oz-in.

Flexplate shields

General Motors


APPLICATION
ENGINE GROUP
TEETH
INT. BALANCE
PRICE
EXT. BALANCE
PRICE
Chevrolet late model
bolt-on crankshaft flange [12]
'86 and up one-piece seal
305 / 350
153
915533
$210.00
915532
$227.00
168
915534
$207.00
915535
$213.00
Chevrolet V8
Small Block [12]
283 / 302 / 327 / 350
Early 2 Piece Seal
153
915539
$238.00
--
--
168
915541
$175.00
--
--
10 DP
139
915545 [10]
$230.00
--
--
400
168
--
--
915561
$196.00
LS1 - F Body (Race only)
168
915733 [7]
$356.00
--
--
LSA / LSX
168
915737 [7,11]
$336.00
--
--
Chevrolet V8
Big Block [12]
'70 - '90 454
454 / 502 Mark IV
168
396/427
USE
#915541
FOR INTERNAL
BALANCE
$175.00
915551
$210.00
'91 & up
Gen V 454 [2]
168
$175.00
915553
$210.00
'91 & up [3] 572
Gen V - 454 HO / 502 HO
168
$175.00
915552
$198.00
10 DP
139
915545 [10]
$230.00
--
--
Oldsmobile [12]
'64 - '67 V8
300 / 400 / 425
166
915562
$311.00
915563
$309.00
Oldsmobile [12]
All V8 including Diesel
166
915564
$234.00
915565 [4]
$261.00
Pontiac V8 [12]
400 / 455
166
915567
$206.00
915568 [5]
$223.00


Chrysler V8 - with ATI Adapters to GM Powerglide, TH350 & TH400 Transmissions

APPLICATION
ENGINE GROUP
TEETH
INT. BALANCE
PRICE
EXT. BALANCE
PRICE
6 Bolt Crank
All wedges
130
915650X [9]
$212.00
--
--
'71 - '92 360
130
--
--
915662
$204.00
8 Bolt Crank
HEMI
130
915660X [9]
$209.00
--
--



Chrysler V8 HEMI

APPLICATION
ENGINE
PART #
PRICE
'05 - '07 300C, Charger & Magnum
5.7L & 6.1L
915663
$189.00
'05 - '07 Jeep Grand Cherokee [8]
3.7L & 6.1L -- NOT 5.7L
915663
$189.00
HEMI - Gen III to 904/727 Trans
5.7L & 6.1L
915685
$142.00
  1. Externally balanced flexplates must be on the crank for balancing or match balanced to the unit that was originally balanced with the crank.
  2. Cast crank only - 41.95 oz. in.
  3. Forged crank only - 42.54 oz. in.
  4. 25.0 oz in
  5. No weight. Imbalance is accomplished by lightening one side of the flexplate.
  6. Replacement parts require crank adapter for proper use. ATI Chrysler adapter flexplates require the use of 10 3/4” bolt circle only with GM converters.
  7. LS flexplates sold only as a kit. Includes flexplate, crank adapter and bolts. Requires a custom aftermarket converter. Must have an engine mounted transmission.
  8. Does not fi t 5.7L Jeep Grand Cherokee. OEM converter bolt holes require longer bolts - included. Use ATI #951037-8 flexplate to crank.
  9. Replacement parts: Be sure to specify the date of original order. Parts shipped prior to January 2007 have different dimensions and part numbers (non-X numbers). Flexplate to crank bolts: for 6-bolt crank, use #951034-6; for 8-boltcrank, use #951034-8.
  10. Special starter required. Order pt.#915546.
  11. For use with 8-bolt cranks
  12. Uses ATI #951479-9-6 flexplate to crank bolts
  13. Uses ARP bolt #200-2904 Flexplate to crank


Ford

ATI flexplates fit aftermarket converters only. Ford Flexplate kits include flexplate, CNC-machined crank piloted spacer and crank bolts. Ford flexplates with 164 teeth have an 11-7/16” bolt circle, and flexplates with 157 teeth have a 10-1/2” bolt circle for Ford converters. Both have factory installed 10-3/4” & 11-1/2” bolt circles for GM converters but only the 10-3/4” bolt circle is usable for the 157 tooth flexplates due to ring gear interference. ATI Ford Flexplates are flat. They will accommodate ONLY converters where the drive pad is ABOVE the converter body.
 
915722 - Flexplate, spacer & crank bolts


ENGINE TRANS
TEETH
INT. BALANCE
PRICE
EXT. BALANCE
PRICE
429 / 460 C6 - E4OD
164
915720
$479.00
915721 [1]
$371.00
FE 332 / 428 C6 - E4OD
184
915722
$385.00
915723 [2]
$354.00
289 / 302 / 351 / 400 C6 - E4OD
164
915724
$342.00
915725 [3]
915726 [4]
$391.00
$328.00
289 / 302 / 351 / 400 C4 - AOD
164
915727
$326.00
915728 [3]
915729 [4]
$351.00
$317.00
289 / 302 C4
157
915730
$324.00
915731 [3]
915732 [4]
$295.00
$295.00
4.6-5.4L Mod Motor
with GM Transmission
GM
164
915735
$315.00
--
--
  1. 24 oz. in. - 460 truck only with D9TP-6375-AA or E7TP-6375-AA OEM flexplates.
  2. 28.8 oz. in. OEM flexplate. For reference, the OEM weight is 5 1/8” x 5/8” x 5/16” thick.
  3. 28.2 oz. in. All 289-351C-351W- 400 and 302 through 1980. OEM flexplate is 4 1/4” x 3/4” x 3/8” thick.
  4. 50.0 oz. in. ‘81 & up 5.0 L only. OEM flexplate weight is 4 1/4”x 7/8” x 7/16” thick.

Flexplate Hardware Kits
Flexplate Bolts
Part Number
Price
FORD 289-302-351 ALL 400-C6 / 400 164 TEETH
950142
$31.00
FORD 289-302HO-351 ALL 400-C6 / 400 164 & 157 TEETH
950143
$21.00
FORD MOD AND LATE HEMI
950144
$22.00
LATE MODEL HEMI 8 BOLT - 10MM X 1.00 X 20MM, CLASS 10.9 - (Pack of 8)
951372-8
$11.00

Flexplate Hardware - High HP use with ATI flexplate and crank adapter
Part Number
Price
MOPAR (Except HEMI) & FORD SB 7/16 - 20 X 1 1/4”, .700 GRIP, 12 PT (Pack of 6)
951034-6
$49.00
MOPAR HEMI 1/2 - 20 X 1-1/4”, .700 GRIP, 12 PT (Pack of 8)
951035-8
$61.00
FLEXPPLATE TO CRANK 1/2 - 20 x 7/8” Use with 1/4” HEMI fuel crank adapter (Pack of 8)
951057-8
$44.00
CHEVY 1/2 - 20 X 1-1/4”, .700 GRIP, 12 PT (Pack of 6)
951035-6
$49.00
FORD 429-460 7/16 - 20 X 1”, .200 GRIP, 12 PT (Pack of 6)
951036-6
$29.00
FORD MOD MOTORS & NEW GEN HEMI - M10 X 1.0 X 30MM, .300 GRIP, 12 PT (Pack of 8)
951037-8
$37.00
FLEXPPLATE TO CRANK 1/2 - 20 x 1-1/4”, .225 HEAD,GRADE 8 (Pack of 8)
951435-8
$22.00

Flexplate Hardware - Flexplate to crank for use with midplate
Part Number
Price
7/16 - 20 X 1-3/32 (Must use #951000 adapter) (Pack of 6)
951062-6
$26.00
1/2 - 20 X 1-3/32 (Must use #951001 adapter) (Pack of 6)
951063-6
$30.00

Flexplate Hardware - High HP use without crank adapter
Part Number
Price
FLEXPLATE TO CRANK 1/2 - 20 x 7/8” - Pack of 6
951057-6
$37.00
FLEXPLATE TO CRANK 1/2 - 20 x 13/16” - Pack of 6
951058-6
$44.00
FLEXPLATE TO CRANK 1/2 - 20 x 13/16” - Pack of 8
951058-8
$51.20
FLEXPLATE TO CRANK 1/2 - 20 x 1” - ,450 GRIP - 12 PT EXTREME DUTY - Pack of 6
951059-6
$42.00
FLEXPLATE TO CRANK 1/2 - 20 x 1” - ,450 GRIP - 12 PT EXTREME DUTY - Pack of 8
951059-8
$45.00
CHRYSLER /CHEVY 6-BOLT CRANKS WITH HD MACHINED ON-SIZE FLEXPLATES
1/2 - 20 x 13/16” - Pack of 6
951058M-6
$53.00
HEMI OR 8-BOLT CRANKS WITH HD MACHINED ON-SIZE FLEXPLATES
1/2 - 20 x 13/16” - Pack of 8
951058M-8
$69.00
CHEVY FLEXPLATE TO CRANK FOR USE WITH CHEVY / OLDSMOBILE CRANKS
7/16 - 20 x 11/16” - Pack of 6
951479-6
$22.00
 
Spacer
Spacer © ATI Performance Products, Inc • 6747 Whitestone Road • Gwynn Oak, MD 21207 • Phone: 1 (877) 298-5039 • Fax: (410) 298-3579
Corner