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SFI CERTIFIED
PREMIUM PRO SERIES CHEVY SBC V-8 FLEXPLATE 153 TOOTH EXTERNALLY BALANCED, (WEIGHTED).

 FITS MOST 1PC REAR MAIN SEAL SBC AND SOME BBC ENGINES. DUAL PATTERN TORQUE CONVERTER MOUNTING HOLES.

Will not fit late model LS based engines.

The picture below is a file photo. Appearance may vary depending on what model you purchase. 

The flexplate offered in this ad will have an external weight.

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This is a file photo. Actual appearance may vary.

FITS MOST ONE PIECE REAR MAIN SEAL SBC ENGINES THAT ARE EXTERNALLY BALANCED, USING A 153 TOOTH FLEXPLATE. 

WILL FIT TURBO 350 AND 400 TRANSMISSIONS, AS WELL AS 700R4. 

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If you're not sure what size flexplate you need, then you should measure your flexplate diameter, and center mounting hole. We have the specs of this flexplate listed below. The 1pc. rms engines have a smaller, approx. (2.0") center mounting hole. The 2pc rms engines have a larger, approx. (2.5") center mounting hole.

It is highly recommended that you replace your flexplate hardware with a set of high quality bolts. ARP is the brand we suggest using. We offer this flexpate as a kit with the correct ARP bolts. See our other listings. The part number for the ARP hardware by itself is 100-2901. It is also recommended that the torque converter hardware be replaced with a set of ARP bolts.

Torque flexplate to crank bolts to 60-65 ft.-lbs. Use LockTite/Thread Locker.

SFI 29.1 Certified
Direct bolt-on replacement.
0.035” thicker than OE flexplates
Features double-welded ring gears
Constructed from high grade chromoly steel
Outside diameter: approx. 12.75"
Torque converter bolt circle: Dual 11.5" and 10.75"
Tooth count: 168 
Center hole diameter: approx. 2.0"
Recommended hardware: ARP-100-2901

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This is a high quality flexplate. The plate section is thicker than the OEM stock model, and is double welded on each side. Warpage and run-out are nearly non-existent. We offer this flexplate as an upgrade on our rotating assemblies. Our engine builders and balance operators quickly noticed the lack of warpage and run-out that we commonly see on many other SFI plates on the market. Much damage to your starter and transmission front pump can result when using a flexplate with excessive warpage.

Out of round (run-out) is another problem with low quality plates and can be disastrous to your starter drive gear and motor. We have found the Pioneer brand plates to have a higher level of workmanship than any of the lower cost SFI plates on the market. Just because a flexplate is SFI rated has little to do with its overall quality. We find the Pioneer plates to be of exceptional quality. When we run these on our engines that are being dynoed, we have noticed that the sound of the starter when cranking is much quieter. The starter gear and ring gear seem to mesh together much better than other brands of flexplates we have used in the past. Considering that both brands of flexplates used were properly shimmed, we must conclude that the Pioneer plates have a better ring gear design. 

There are so many poorly designed flexplates on the market, and they can certainly do damage to your engine or the components on your engine. Low quality, poorly designed ring gears and starter drives will destroy each other quickly, from what we have seen. Of course you must also properly shim your starter.

Not all OEM stock models are double welded, and some are very thin. Often you will see starters that have teeth worn or broken due to a worn ring gear on the flexplate. This is a good investment to protect your engine, transmission, and starter. These are SFI rated, with the SFI sticker on them. We use them on engines producing 800 hp at up to 7500 rpm. 

Safety is another factor to consider. A stock or low quality flexplate is prone to break at very high rpm. A flexplate breaking up during high rpm is very dangerous.

Very Important Note!

Our sales staff has limited technical knowledge on this product and are usually unable to answer many of the questions asked. See our other listings for variations of this product.

    • We are not responsible for collateral damage caused by the use of this product.

       

RETURN POLICY


Should a problem occur, please contact us. If a return is necessary, please contact us for an RGA number and return authorization. The RGA number must be included on the return label. If an item is returned without an RGA number, it will not be processed. A full description of what the problem is needs to be included with any returned product with your contact info, and proof of purchase. Even though you may have explained the problem to us, and been granted permission to return the product, we must have a written explanation and a contact number included with the product. It is also recommended that you include the name of the person from our company that you have been in contact with. You must send the item back to us in a trackable manner (USPS Priority Mail, FedEx, etc.) and keep the tracking info of the returned product. Please give ample time for returns to be processed. Following these guidelines will make the return process work as it should.  


PAYMENT AND SHIPPING DETAILS.

 

We offer great discounts on shipping. You only pay the full shipping fee on the highest shipping cost of your items, and HALF PRICE shipping on all additional items. Few offer discounts on shipping such as this. Our checkout system will automatically calculate your shipping discount at the time of final payment, providing you consolidate your payment.


You may receive a verification and tracking number shortly after purchase, but this does not necessarily mean that your product has shipped. It would be fair to say that 98% of products will be going out the day the shipping label is issued. On occasion, the product may not ship out until the next day after the label has been issued. Most products purchased late in the day will not be shipped until the next day.  

 

If you checkout and start over, the auto calculator will not recognize the multiple purchases, and there will be no shipping discount. 

 

FedEx is our primary shipper. We are unable to ship to APO/FPO addresses. Help us ship your order promptly by including your physical address at checkout. If your order MUST be shipped to a PO BOX, please contact us. Additional charges may apply. Below is a map representing the estimated delivery time to get to you from our location.


Delivery times may vary, especially during peak periods.

MAP

KEY

FedEx Home Delivery delivers Tuesday - Saturday. If a package leaves here on a Thursday, and you are in a 2 day delivery zone, your package may deliver to you on Saturday. If you are in a 3 day zone, and your package leaves on a Thursday, you should receive it on the following Tuesday. Expedited shipping is available upon request for an additional fee. Please contact us for rates. The estimated shipping time is usually as the map shows, but many factors can delay this.  

Hawaii and Alaska have a 6+ day estimated delivery time.

The shipping quoted in this ad is only for the 48 continental United States. If shipping to anywhere else, please contact us. The half price shipping on all additional items also only applies to items that are being shipped in the 48 continental United States.

 

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