406 small block
#4
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
They can probably handle around 600 HP. i have 2 of them a 4 bolt and a 2 bolt that's in my car now on alcohol. I don't know how much HP it has but it runs 6.50's in my 3250lb Malibu with a toilet bowl, got 200/300 passes on it.
One thing you must absolutly do is put 1/8" pipe plugs in the water holes to keep it from breaking /cracking between the head bolts i also plug the steam holes.you should also run head studs not bolts. I've ran them for 25 yrs. and the biggest problem i have had was not preparing the block deck properly. With that said i've also cracked cylinders on blocks that the casting bores was was not centered, so it's a good idea to have the block exrayed to determine the wall thickness and have the bores shifted to made the cylinder wall's more equal.
JMO
Zip.
One thing you must absolutly do is put 1/8" pipe plugs in the water holes to keep it from breaking /cracking between the head bolts i also plug the steam holes.you should also run head studs not bolts. I've ran them for 25 yrs. and the biggest problem i have had was not preparing the block deck properly. With that said i've also cracked cylinders on blocks that the casting bores was was not centered, so it's a good idea to have the block exrayed to determine the wall thickness and have the bores shifted to made the cylinder wall's more equal.
JMO
Zip.
#5
Originally Posted by zipper06
They can probably handle around 600 HP. i have 2 of them a 4 bolt and a 2 bolt that's in my car now on alcohol. I don't know how much HP it has but it runs 6.50's in my 3250lb Malibu with a toilet bowl, got 200/300 passes on it.
One thing you must absolutly do is put 1/8" pipe plugs in the water holes to keep it from breaking /cracking between the head bolts i also plug the steam holes.you should also run head studs not bolts. I've ran them for 25 yrs. and the biggest problem i have had was not preparing the block deck properly. With that said i've also cracked cylinders on blocks that the casting bores was was not centered, so it's a good idea to have the block exrayed to determine the wall thickness and have the bores shifted to made the cylinder wall's more equal.
JMO
Zip.
One thing you must absolutly do is put 1/8" pipe plugs in the water holes to keep it from breaking /cracking between the head bolts i also plug the steam holes.you should also run head studs not bolts. I've ran them for 25 yrs. and the biggest problem i have had was not preparing the block deck properly. With that said i've also cracked cylinders on blocks that the casting bores was was not centered, so it's a good idea to have the block exrayed to determine the wall thickness and have the bores shifted to made the cylinder wall's more equal.
JMO
Zip.
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "
Bjuice..
"I'M YOUR HUCKLEBERRY ! "