Big Block head numbers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BLAZERMAN · 06-15-2003, 04:47 PM

A buddy of mine has a couple sets of big block heads that have been in the back of his shop for at least 20 years, can anyone give me any info such as year or if they are any good for high performance? #6272292 AND #3872702 They also have PASS cast into them?

**68 Stepside** · 06-15-2003, 04:58 PM

Cast number/year/port/chamber/engines found on and notes
6272292....70-78...oval...OPEN...402, 454
3872702....65-66...oval..CLOSED..396, 427

Tell him I'll send him $50 if he ships them to me

Actually, I know jack about BB heads, so TTT

superchevy · 06-15-2003, 06:14 PM

You'd be better off finding a set of 781 or 049 oval port castings if you're looking to build up a set. They flow the best of any big block oval ports.
You might put those other heads on ebay. List them with the casting number and date codes. A lot of guys restoring cars are looking for heads like those. Just a thought.
SC

06-15-2003, 04:47 PM	#1
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,826	Big Block head numbers A buddy of mine has a couple sets of big block heads that have been in the back of his shop for at least 20 years, can anyone give me any info such as year or if they are any good for high performance? #6272292 AND #3872702 They also have PASS cast into them? __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C Last edited by BLAZERMAN; 06-15-2003 at 04:51 PM.

06-15-2003, 04:58 PM	#2
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,692	Cast number/year/port/chamber/engines found on and notes 6272292....70-78...oval...OPEN...402, 454 3872702....65-66...oval..CLOSED..396, 427 Tell him I'll send him $50 if he ships them to me Actually, I know jack about BB heads, so TTT __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

06-15-2003, 06:14 PM	#3
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	You'd be better off finding a set of 781 or 049 oval port castings if you're looking to build up a set. They flow the best of any big block oval ports. You might put those other heads on ebay. List them with the casting number and date codes. A lot of guys restoring cars are looking for heads like those. Just a thought. SC __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396



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