TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Tractor Pulling Discussion Forum

G Flat Head: F49R or F486R

Welcome Guest, Log in or Register

Author

JD Pullin'

02-19-2007 14:41:24

Report to Moderator

Which of these two flat heads will work on a styled G to increase the compression? Will both bolt right upto a styled G? And what kind of increase in HP can you expect with a stock crank?
Thanks for all your advice!!

[Log in to Reply] [No Email]

JDGnut

02-19-2007 20:29:25

Report to Moderator

Re: G Flat Head: F49R or F486R in reply to JD Pullin', 02-19-2007 14:41:24

Either head will work... use the later Gasket. The early gasket will not match up to the block.. JDGnut

[Log in to Reply] [No Email]

JDGnut

02-19-2007 20:37:17

Report to Moderator

Re: G Flat Head: F49R or F486R Pic in reply to JDGnut, 02-19-2007 20:29:25

Early G block, later G gasket. the early head has the same small water passage as the block, but the head will work on the later block because the extra area for the water passage is blocked off on the early head.

[Log in to Reply] [No Email]

JD Pullin'

02-19-2007 16:36:56

Report to Moderator

Re: G Flat Head: F49R or F486R in reply to JD Pullin', 02-19-2007 14:41:24

Also, would you get the estimated 15 HP from both heads?

[Log in to Reply] [No Email]

JD Pullin'

02-19-2007 16:34:19

Report to Moderator

Re: G Flat Head: F49R or F486R in reply to JD Pullin', 02-19-2007 14:41:24

Which head is the earlier one?

[Log in to Reply] [No Email]

Josh Wilhelm

02-19-2007 14:46:49

Report to Moderator

Re: G Flat Head: F49R or F486R in reply to JD Pullin', 02-19-2007 14:41:24

Both heads will work but the early one needs a special head gasket. I would estimate that you should gain around 15 hp with the flat head.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy