Maybe Im a dummy

Alan Roehrich · 08-04-2007, 06:54 PM

Dustin, on the NHRA website, look for the link at the top that says "rules", under that you'll see the stock car classification guide, and the engine blueprint specifications. In the engine blueprint specifications you'll see what castings you can use, and what the specifications are. In the classification guide you'll see what the NHRA HP ratings are. I'd say that if you can use the aluminum heads, it'll increase the NHRA HP rating.

Jim Wahl · 08-06-2007, 11:51 AM

Alan, I thought you told me you had all those Chebby #s memorized?

Jim

Alan Roehrich · 08-06-2007, 01:25 PM

Quote:

Originally Posted by Jim Wahl

Alan, I thought you told me you had all those Chebby #s memorized?

Jim

Only some years. I'm concentrating on the 69 stuff right now.

Dustin Chase · 08-06-2007, 09:03 PM

Im just not seeing it in the mess of numbers on that page. I see volumes and intake#'s and such. we are building a 454 450 horse combo any help is appreciated.

thanks alot

Dustin Chase · 08-06-2007, 09:11 PM

What cranks are legal for stock as well. 4130?

thanks again

FED 387 · 08-06-2007, 09:31 PM

Not positive but the casting numbers I have for a 1970 454/450 LS6 Chevelle/Malibu engine are as follows
Block---3963512
Cylinder head--3964291 or 3964292
Camshaft---3863143
Crankshaft---3963523
Intake manifold--3963569

Hope this helps--Comp 387

08-04-2007, 06:54 PM	#1
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,826 Times in 414 Posts	Re: Maybe Im a dummy Dustin, on the NHRA website, look for the link at the top that says "rules", under that you'll see the stock car classification guide, and the engine blueprint specifications. In the engine blueprint specifications you'll see what castings you can use, and what the specifications are. In the classification guide you'll see what the NHRA HP ratings are. I'd say that if you can use the aluminum heads, it'll increase the NHRA HP rating. __________________ Alan Roehrich 212A G/S

08-06-2007, 11:51 AM	#2
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 667 Liked 683 Times in 129 Posts	Re: Maybe Im a dummy Alan, I thought you told me you had all those Chebby #s memorized? Jim __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.

08-06-2007, 09:03 PM	#4
Dustin Chase Junior Member Join Date: Jun 2007 Location: Pampa Texas Posts: 31 Likes: 0 Liked 0 Times in 0 Posts	Re: Maybe Im a dummy Im just not seeing it in the mess of numbers on that page. I see volumes and intake#'s and such. we are building a 454 450 horse combo any help is appreciated. thanks alot __________________ Dustin Chase Comp 470 K/A

08-06-2007, 09:11 PM	#5
Dustin Chase Junior Member Join Date: Jun 2007 Location: Pampa Texas Posts: 31 Likes: 0 Liked 0 Times in 0 Posts	Re: Maybe Im a dummy What cranks are legal for stock as well. 4130? thanks again __________________ Dustin Chase Comp 470 K/A

08-06-2007, 09:31 PM	#6
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,420 Likes: 529 Liked 333 Times in 180 Posts	Re: Maybe Im a dummy Not positive but the casting numbers I have for a 1970 454/450 LS6 Chevelle/Malibu engine are as follows Block---3963512 Cylinder head--3964291 or 3964292 Camshaft---3863143 Crankshaft---3963523 Intake manifold--3963569 Hope this helps--Comp 387

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