305 Stocker Block Question - Page 2

Dean Feiock · 09-10-2012, 01:48 PM

At 28 lbs for a tall fill bucket of HardBlock, it's about equal to the weight of a sleeved block.
Just remember that you cannot use a 4 bolt block.
You may want to try using a 307 block. I have a sleeved 350 block and a sleeved 307 block and I prefer the 307.

Greg Hill · 09-10-2012, 02:03 PM

Quote:

Originally Posted by Dean Feiock

At 28 lbs for a tall fill bucket of HardBlock, it's about equal to the weight of a sleeved block.
Just remember that you cannot use a 4 bolt block.
You may want to try using a 307 block. I have a sleeved 350 block and a sleeved 307 block and I prefer the 307.

Why can't you run a 4 bolt main block?

Jeremy K · 09-10-2012, 04:50 PM

Quote:

Originally Posted by Greg Hill

Why can't you run a 4 bolt main block?

I'm interested in the answer to this as well.

I'm sure the Dart Block that Bub suggests is 4 bolt. I don't see the part number in the accepted parts list yet, just the 4.00" bore SHP. Does anyone have information on whether it will be added soon?

I could also drive 1.5 hours to pick up a (factory) 4 bolt main 305 block.

I wouldn't want to get either of these and have them end up being illegal.

Jeremy

Jim Cassels · 09-10-2012, 07:24 PM

Quote:

Originally Posted by Greg Hill

Why can't you run a 4 bolt main block?

Greg,
About 5 or 6 yrs. ago we put sleeves in a 4 bolt 350, after all the machine work was done I decided to call NHRA. They told me no way a 305 never came with anything but a 2 bolt. I would bet it would be OK now.
Jim

Lee Valentine · 09-10-2012, 07:31 PM

Talked to Dart Today , Not making small bore shp block due to engineering problems. Not planning to make them in the future,
.

Tim H · 09-10-2012, 08:46 PM

Quote:

Originally Posted by Jeremy K

I'm interested in the answer to this as well.

I'm sure the Dart Block that Bub suggests is 4 bolt. I don't see the part number in the accepted parts list yet, just the 4.00" bore SHP. Does anyone have information on whether it will be added soon?

I could also drive 1.5 hours to pick up a (factory) 4 bolt main 305 block.

I wouldn't want to get either of these and have them end up being illegal.

Jeremy

I have never seen a factory 4 bolt main 305 block ... ?

Jeremy K · 09-10-2012, 09:14 PM

Quote:

Originally Posted by Tim H

I have never seen a factory 4 bolt main 305 block ... ?

I haven't seen this one either. A friend of mine saw it and told me it was for sale. Came in Canadian service trucks/vans.

Sounds like the small bore Dart block is a no go. If I carry the 4 bolt main 305 around, maybe the sleeved 4 bolt main 350 will be deemed legal. Or maybe the filled 305 blocks will be just fine, looks like they are a common option.

Thanks for the input thus far.

Jeremy

Kenny Wigington · 09-10-2012, 09:51 PM

I had one about 10 yrs ago. Had I known I was going to try Stock, I would have kept it ! Came out of a Generac Natural Gas Genset off the rear of a Dr's office. 5.0L /w 4 bolt mains. I sold it to a guy who had a round track truck.

Dean Feiock · 09-12-2012, 10:35 PM

I won't debate the issue of their existance. I'm quite sure that in the US market, in GM production passenger cars and trucks, GM never installed a 4 bolt, 2 piece rear main seal, 305 block.

Among all the wording in the rule book, it states "no export, marine, or special equipment". That was the reason I was given when I asked years ago. Which in a nutshell means power plant, marine, and over the border parts don't qualify for stocker use (in most cases).

I have not seen one, but I am told the pallet of small bore Bowtie blocks that Patterson bought are two bolt to comply with the rules.

To be honest, at 400 HP, a good two bolt block with nodular caps and high quality sleeves is more than adequate.

nolongerracing · 09-13-2012, 09:07 AM

After approving the Dart SHP block for stock and superstock, do you really think that NHRA cares what you do with your $50 305 block? Do you think they are ever going to look at a bottom of an engine again?

09-10-2012, 01:48 PM	#11
Dean Feiock Member Join Date: Aug 2002 Location: Pierre, SD Posts: 204 Likes: 0 Liked 49 Times in 15 Posts	Re: 305 Stocker Block Question At 28 lbs for a tall fill bucket of HardBlock, it's about equal to the weight of a sleeved block. Just remember that you cannot use a 4 bolt block. You may want to try using a 307 block. I have a sleeved 350 block and a sleeved 307 block and I prefer the 307. __________________ Dean Feiock -- Stock 5002

09-10-2012, 07:31 PM	#15
Lee Valentine Senior Member Join Date: May 2004 Location: Brookfield, CT Posts: 708 Likes: 13 Liked 319 Times in 68 Posts	Re: 305 Stocker Block Question Talked to Dart Today , Not making small bore shp block due to engineering problems. Not planning to make them in the future, . __________________ Lee Valentine 1661 STK

09-10-2012, 09:51 PM	#18
Kenny Wigington Senior Member Join Date: Sep 2004 Location: Cumming,Ga. USA Posts: 967 Likes: 36 Liked 60 Times in 12 Posts	Re: 305 Stocker Block Question I had one about 10 yrs ago. Had I known I was going to try Stock, I would have kept it ! Came out of a Generac Natural Gas Genset off the rear of a Dr's office. 5.0L /w 4 bolt mains. I sold it to a guy who had a round track truck. __________________ 2894 STK

09-12-2012, 10:35 PM	#19
Dean Feiock Member Join Date: Aug 2002 Location: Pierre, SD Posts: 204 Likes: 0 Liked 49 Times in 15 Posts	Re: 305 Stocker Block Question I won't debate the issue of their existance. I'm quite sure that in the US market, in GM production passenger cars and trucks, GM never installed a 4 bolt, 2 piece rear main seal, 305 block. Among all the wording in the rule book, it states "no export, marine, or special equipment". That was the reason I was given when I asked years ago. Which in a nutshell means power plant, marine, and over the border parts don't qualify for stocker use (in most cases). I have not seen one, but I am told the pallet of small bore Bowtie blocks that Patterson bought are two bolt to comply with the rules. To be honest, at 400 HP, a good two bolt block with nodular caps and high quality sleeves is more than adequate. __________________ Dean Feiock -- Stock 5002 Last edited by Dean Feiock; 09-12-2012 at 10:40 PM.

09-13-2012, 09:07 AM	#20
nolongerracing Member Join Date: Oct 2006 Posts: 173 Likes: 2 Liked 72 Times in 27 Posts	Re: 305 Stocker Block Question After approving the Dart SHP block for stock and superstock, do you really think that NHRA cares what you do with your $50 305 block? Do you think they are ever going to look at a bottom of an engine again?