The max is 508 cubic inches. It will be a 489 since my SRP forged pistons are in good shape. Just need a polish. At the end of the day, I decided that this made the most sense for my car and my application. This ain't no drag car. That's another project! I'll have some updates with all the trick parts and machining..........
The max is 508 cubic inches. It will be a 489 since my SRP forged pistons are in good shape. Just need a polish. At the end of the day, I decided that this made the most sense for my car and my application. This ain't no drag car. That's another project! I'll have some updates with all the trick parts and machining..........
Does it require a re sleeve to get it up to 508 inches? I ask because of the max bore and stroke advertised on the web site that Rodger gave a link for.
Either way you slice it, the lighter block and I am sure there will be a bit more power this will make for a really kick ass package for your car!
With a bore of 4.300x4.375 stroke it makes a 508. You can bore the existing sleeves just like any block. If they end up unservicable, they are replaceable. I'm not going to make an undersquare engine. It will be 4.280 x4.250. I thought about doing an odd ball engine just to be rare, but it adds stress to the pistons limits the rpm potential a Hair.....
There were a few factors. Weight, GM Engineering, and last but certainly not least, history. The 540 idea came and went pretty quickly. I had to be a little economical. This allows me to reuse my pistons, carb, clutch, and fuel system. Going 540 would have added 50 lbs even in aluminum and my components just aren't ideal. This should provide all the power I need to do what I intend. Pretty sure I found the only resale block for sale in the US. It hasn't been used but I saved about $900 over getting it at the parts counter.
The usable RPM won't change to much from the old motor. My exact words to him were, "This car is 50% race and 50% street" I don't want to give up my highway cruising drivability but want it to rev higher. I'd say it will have usable power from 2500-6500. Redline should be in the mid to high 6k.....The cam is still up in the air.
The max is 508 cubic inches. It will be a 489 since my SRP forged pistons are in good shape. Just need a polish. At the end of the day, I decided that this made the most sense for my car and my application. This ain't no drag car. That's another project! I'll have some updates with all the trick parts and machining..........
I am eventually going this same route but even bigger perhaps. The block was pricey I imagine but well worth every penny. I am jealous
Were you experiencing any push at track days with the iron block?
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
That's another project! I'll have some updates with all the trick parts and machining..........
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