427/875 heads

Adger Smith · 05-03-2014, 02:46 PM

Is anyone familiar with these BBC heads?:

10049875 10049875 376/R 83 (o) 2.28/1.88 Pontiac small port head
10045427 10045427 460/R 91 (o) 2.40/1.90 Pontiac large port head

What are the common OAL valve length for these heads?
Thanks,
Adger Smith
adgersperf@aol.com

SSDiv6 · 05-03-2014, 11:21 PM

Quote:

Originally Posted by Adger Smith

Is anyone familiar with these BBC heads?:

10049875 10049875 376/R 83 (o) 2.28/1.88 Pontiac small port head
10045427 10045427 460/R 91 (o) 2.40/1.90 Pontiac large port head

What are the common OAL valve length for these heads?
Thanks,
Adger Smith
adgersperf@aol.com

Big Port: Intake - 6.605", Exhaust - 6.45"

The small port heads were made by Brodix:
Intake - 5.471", Exhaust - 5.450"

05-03-2014, 02:46 PM	#1
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,348 Likes: 434 Liked 676 Times in 260 Posts	427/875 heads Is anyone familiar with these BBC heads?: 10049875 10049875 376/R 83 (o) 2.28/1.88 Pontiac small port head 10045427 10045427 460/R 91 (o) 2.40/1.90 Pontiac large port head What are the common OAL valve length for these heads? Thanks, Adger Smith adgersperf@aol.com __________________ Adger Smith (Former SS)