1Bad69

this is from mortec...6272990....70-up...rect...OPEN...454 service replacement, used on some MKIV crate engines, 118cc chamber
i believe the valves are 2.19 and 1.88......any info would be appreciated...thanks :cheers:

verskel

6260482 Service Replacement 6272990 or 14096188 Cast Iron Open 118cc I: 2.19"
E: 1.88" 325 Rect. Square Used on LS-6 and LS-7. Open or closed chamber pistons. Originally produced 1968-71. :chevy

Is there any other info. you need ? ...be specific. :chevy ;)

fireball

I'm running these heads. Here's some data I've collected on them...
Description Open Chamber LS-6 & LS-7 Service Head, 425hp, approx $700
Casting # 6272990 (equiv 14096188, 6260482, 366250, 3965774)
intake / exh valves: 2.19" / 1.88"
Material Cast Iron
Combustion Chamber Open 118cc
Intake Runner 325cc
Intake Port Type Rectangular
Exhaust Port Type Square
Flow: valve lift /Intake /Exhaust
.05 32 24
.10 69 53
.20 125 103
.30 183 140
.40 233 176
.50 264 198
.60 292 204
.70 - 207

1Bad69

thanks guys...i guess the only thing else would be where are these heads on a scale of not to good,O.K., or would highly recommend.
are there better ones for my 454????

1Bad69

ttt

gdh

Hey Mike, saw them advertised on the Home Shopping Network, they were sandwiched between the buns of steel video part 39 and abzapper. Are you serious about more power for your beast, and I thought Wayne had it bad, :lol:

1Bad69

sorry greg..is that your mouth running or your motor????? :jester :lol: