HP Blocks

[VAN059]

Hi Everyone,

This may have been discussed previously, and I don't want to start any arguments, but can someone tell me the difference between HP and non HP blocks of the 179 variety?

Cheers
Marc

[brett_f]

Marc, you are now racking the brain. If i remember the blocks have thicker walls so you can bore them out further. They are also made of different material (cant quite remember but i think it was nickle content). They also have forged cranks and not cast cranks. Im sure i may have missed something that others will remember. Good blocks to have in the day. The stamping on the lower area of the block either had 179HP or just HP. I think it was just HP. 186S blocks were the same.
Regards Brett

[ACE]

Hi Everyone,

This may have been discussed previously, and I don't want to start any arguments, but can someone tell me the difference between HP and non HP blocks of the 179 variety?

Cheers
Marc

There's no difference in a HP or 179 engine.
ACE 

[brett_f]

I think you are wrong ACE. HP stood for high performance. Brett

[newman]

There's no difference in a HP or 179 engine.
ACE 

Have heard the arguments for and against over this question for a long time, bit like the grey motors and the canadian blocks question

I'm a confirmed grey motor man but I'll be interested if someone can clarify the HP block question

Micl

[GM]

http://holdenpaedia.oldholden.com/HP_Engine_Blocks

[VAN059]

Thanks everyone who replied, I guess the HP stamped motor is just an earlier version of the 179 stamped motor. 

 

[brett_f]

Well i stand to be corrected. All those years ago we were told differently.
Brett

[VAN059]

Well i stand to be corrected. All those years ago we were told differently.
Brett

I prefer your answer though Brett