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427ci GM LT Gen V | Aluminum Re-Sleeve Block | Dry Sump | Factory Mast Heads

Marsoni M251S
Sale price$13499.50
Pay 4 payments of $3374.88 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
427ci GM LT Gen V | Aluminum Re-Sleeve Block | Dry Sump | Factory Mast HeadsEngine pricing & lead times vary please call 1 866 551 4916 for pricing & delivery estimate. Click here to request a custom engine with our free engine quote questionaire. Mast Motorsports 427 Cubic inch GM Gen V LT engine Port Fuel injection or Direct Injection Dry Sump Performance Engine Mast hand builds each engine, and remanufactures components to bring you only the highest quality engine available. Specs 427 Cubic Inch Factory Mast GM Gen V Re
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 1770 reviews
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Product Reviews
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Verified Purchase
Nicole Ramirez
Dallas, US
★★★★★ 5
Great pillow
Style: Side Sleeper, Pattern Name: King
Love them, very fluffy and full not flat like my old pillows. And they are easy to fluff even if they go flat after sleeping on them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 17, 2024
J
Verified Purchase
Julielle
Fort Morgan, US
★★★★★ 5
Really helped with my neck pain
Style: Side Sleeper, Pattern Name: King
These were exactly what I was looking for. Really helped with my neck pain.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
C
Verified Purchase
Cecilia
Houston, US
★★★★★ 4
Great Pillows
Style: Side Sleeper, Pattern Name: King
I was very skeptical about purchasing pillows online. After much research, I decided to buy two of the king size pillows. When they arrive, they were rolled up tightly in plastic. I fluffed them up and got new pillow cases for them. The first few days, I was tossing and turning. After giving them a few days, I can honestly say they are very nice pillows. Not to firm and not to soft...a very nice medium! They have a cool feeling when you lay on them. These pillows are great for those who sleep on their back AND side sleepers. No feathers have been poking out. My significant other LOVES these pillows. Been sleeping great and feel like I made a great decision getting these. Great value, great materials and great quality. I highly suggest trying these out if you're looking to replace your pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2022
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Serta Pillows
Style: Side Sleeper, Pattern Name: King
They’re very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
J
Verified Purchase
Jackalope
Whiting, US
★★★★★ 3
Great quality but big
Style: Side Sleeper, Pattern Name: King
These pillows seem to be very good quality. I couldn’t wait to try them. I soon realized that they’re very thick & too high for my neck. I can push the pillow down but it doesn’t stay so I’d say they’re too firm for me & don’t support the neck properly because of the height.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2025

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