Aftermarket Parts in S/SS

Lynn A McCarty · 08-09-2016, 07:18 PM

Interesting thread a few years ago. Many guys believed an aftermarket block was no additional power gain. NHRA doesnt penalize engine hp with its incorporation. So, again I ask....what's it worth?

I saw an alum aftermarket head gain 70 hp in one engine over an NHRA adder of 10 rated hp.

Mike Pearson · 08-10-2016, 08:23 AM

The aftermarket blocks are much heavier than a stock block. They are much more durable and probably will make more power. The bowtie block in my car added about 35 lbs to my weight when I made the change. It was a better engine so I am not sure how much better just the block was.

Rick Leininger Jr. · 08-11-2016, 05:21 PM

What a block or head might be worth depends on what it's replacing.

An aftermarket block in a Super Stock Big Block Chevy was worth zero point zero horsepower.

08-09-2016, 07:18 PM	#1
Lynn A McCarty Member Join Date: Jun 2002 Location: Plainfield (INDY) Indiana Posts: 468 Likes: 1 Liked 3 Times in 3 Posts	Aftermarket Parts in S/SS Interesting thread a few years ago. Many guys believed an aftermarket block was no additional power gain. NHRA doesnt penalize engine hp with its incorporation. So, again I ask....what's it worth? I saw an alum aftermarket head gain 70 hp in one engine over an NHRA adder of 10 rated hp. __________________ Lynn A McCarty 3470 SS

08-10-2016, 08:23 AM	#2
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,450 Likes: 615 Liked 1,931 Times in 580 Posts	Re: Aftermarket Parts in S/SS The aftermarket blocks are much heavier than a stock block. They are much more durable and probably will make more power. The bowtie block in my car added about 35 lbs to my weight when I made the change. It was a better engine so I am not sure how much better just the block was. __________________ Mike Pearson 2485 SS

08-11-2016, 05:21 PM	#3
Rick Leininger Jr. Member Join Date: Jun 2007 Posts: 162 Likes: 0 Liked 0 Times in 0 Posts	Re: Aftermarket Parts in S/SS What a block or head might be worth depends on what it's replacing. An aftermarket block in a Super Stock Big Block Chevy was worth zero point zero horsepower.