[65nss4spdGTO]

Originally Posted by John Langer

Not in mine due to the stroke. 2.5" wouldn't live. Maybe 20 passes before the crank would break. If that long.

Another reason high horse power efficient engines have the biggest bores and shorter strokes. The forces and piston speeds when 4.600” stroke engines are turning close to 9000 RPMs creates major challenges for longevity.

How long have you been running billet pistons?

Calvin Hill
Hill Performance
708-250-7420

[455-4+1]

Originally Posted by Jack Gifford

A sbc at 540 c.i.?

Plenty of 540 plus small block Chevies over here in NZ, mostly in 13ft boats 😁

[Sirrotica]

A Billet block that is in the description a tall deck, and most likely the bore centers have been altered also. Keeping stock SBC dimensions 440, roughly, is about as large as you can make a SBC. It does say the engine pictured is a on of a kind at 600 CU IN and has very little in common with a stock SBC.

[455-4+1]

Yep fully realise that, his "small blocks" have grown from high 400 to 520, 540, 575 and now ro 600.
All are still doing race duty around the country and in Aus.
I guess it comes down to how hard you want to call something lol
Is a billet block and head (symmetrical port or otherwise) tall deck engine with Pontiac valve covers still a Pontiac, i guess so. Someone else will say otherwise lol.
Merely pointing out how loosely terms can be thrown around these days.
As for fast with iron heads, Jim Robertson TA is no NA slouch at a reasonable race weight, Not sure Texas is on the coast though lol

[GTOGEORGE]

Originally Posted by 455-4+1

Yep fully realise that, his "small blocks" have grown from high 400 to 520, 540, 575 and now ro 600.
All are still doing race duty around the country and in Aus.
I guess it comes down to how hard you want to call something lol
Is a billet block and head (symmetrical port or otherwise) tall deck engine with Pontiac valve covers still a Pontiac, i guess so. Someone else will say otherwise lol.

Its a Pontiac if the bore spacing is stock and Pontiac heads and crank will bolt in/on.

GTO George

[455-4+1]

Originally Posted by GTOGEORGE

Its a Pontiac if the bore spacing is stock and Pontiac heads and crank will bolt in/on.

GTO George

Well thats one opinion (which you are entitled to).
So its ok to change a major block parameter like deck height, but not others?.
Does the crank have to have PMD stock dimenion mains, or is that amother parameter thats ok to change.
I personaly just dont see how a stock dimenion block with a symmetrical port billet head, is any more Pontiac, than an altered main engine with a high deck and a cast iron Dport head on it.
Not saying i would build either, but we are tslking parameters here 😁

[7T2]

Originally Posted by johnta1

Just saw on Dragzine that the new season of STREET OUTLAWS: NO PREP KINGS starts Jan 14th.
No mention of Big Chief in the article.
He's not traveling to the different tracks to win the big bucks?
(or just didn't mention him?)

john,
seems like we heard this series is a spin off that stars ryan

[7T2]

Originally Posted by 455-4+1

Plenty of 540 plus small block Chevies over here in NZ, mostly in 13ft boats 😁

shipped first set of CV-1's to NZ... Bay of Plenty

[GTOGEORGE]

Originally Posted by 455-4+1

Well thats one opinion (which you are entitled to).
So its ok to change a major block parameter like deck height, but not others?.
Does the crank have to have PMD stock dimenion mains, or is that amother parameter thats ok to change.
I personaly just dont see how a stock dimenion block with a symmetrical port billet head, is any more Pontiac, than an altered main engine with a high deck and a cast iron Dport head on it.
Not saying i would build either, but we are tslking parameters here ��

You asked a question and I answered it.



GTO George

[Anderson Port Development]

Originally Posted by GTOGEORGE

Its a Pontiac if the bore spacing is stock and Pontiac heads and crank will bolt in/on.

GTO George

... ...

[Jeff Kinsler]

Originally Posted by Scott Roberts

At 460ci?

Ron isnt 460 ci, closer to 485 ish.

[Anderson Port Development]

... i have been reading the responses about Kelvin Poe's results here and it seems to be very clear that "many" were doing their best to try and make it seem like the camshaft and rocker changes was somehow responsible for the increase in power and performance that was realized, which quite honestly is ridiculous ...

... comparable camshafts AND/OR ROCKERS do not equal 150+HP gain, it's just that simple, especially at only 7300rpm, anyone that wants to believe that needs their heads examined ...

... Kelvin went from 821hp @ 6800rpm to 974hp @ 7300rpm with his CV-1's, everyone is so quick to assume that the new camshaft is better just because it's different, but no one can say the car may not have run even better with the original camshaft or even the same for that matter, either way that new cam would certainly not have added another 153HP on it's own, to assume so is quite stupid ...

[Scott Roberts]

Originally Posted by Jeff Kinsler

Ron isnt 460 ci, closer to 485 ish.

Ok...he still cant do it at 485ish ci...

[slowbird]

Originally Posted by Anderson Port Development

... i have been reading the responses about Kelvin Poe's results here and it seems to be very clear that "many" were doing their best to try and make it seem like the camshaft and rocker changes was somehow responsible for the increase in power and performance that was realized, which quite honestly is ridiculous ...

... comparable camshafts AND/OR ROCKERS do not equal 150+HP gain, it's just that simple, especially at only 7300rpm, anyone that wants to believe that needs their heads examined ...

... Kelvin went from 821hp @ 6800rpm to 974hp @ 7300rpm with his CV-1's, everyone is so quick to assume that the new camshaft is better just because it's different, but no one can say the car may not have run even better with the original camshaft or even the same for that matter, either way that new cam would certainly not have added another 153HP on it's own, to assume so is quite stupid ...

He picked up .2-.3 at the track? He also went to a dry sump, im guessing thats worth some hp??

[LiL Jack]

Originally Posted by Jeff Kinsler

Ron isnt 460 ci, closer to 485 ish.

Shhh, that’s Secret Squirrel Chit bra!

[Scott Roberts]

Originally Posted by LiL Jack

Shhh, that’s Secret Squirrel Chit bra!

Fact remains......you cant do it.

[LiL Jack]

Originally Posted by Scott Roberts

Ok...he still cant do it at 485ish ci...

At 2400#?
That’s only 65 inches less, and 700#!

[LiL Jack]

Originally Posted by Scott Roberts

Fact remains......you cant do it.

Like I said at 485 inches and 2400#
I bet I could!

At the end of this year we will see what I can do at 3100# with a 550” motor and one system.

Then tell me what I can and can’t do!

[LiL Jack]

King Kinsler will be stupid fast this year too with the new Ultra Street rules!

[slowbird]

Originally Posted by LiL Jack

King Kinsler will be stupid fast this year too with the new Ultra Street rules!

What rule changes were made?