BBC Rod options for 4" stroke
08-21-2023 | 06:45 PM
#12
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Joined: Aug 2019
Posts: 1,233
Likes: 417
From: BC
If I use my GM 7/16 rods, I'll of course end up with the 6.135 rods.
If I go aftermarket rod, I'll go 6.385" for sure. Better rod ratio and lighter piston options etc.
Going to a 4.250" stroke in the future...the 6.385" rod is a better option as well, though would not be keen on replacing the pistons etc. So in that respect, getting new cores and starting fresh would be a more cost effective option.
I'm looking at the machining costs to get the ARP bolts in, and big ends resized. Starts adding up quick. I can do all the cleanup on them, deburring etc. So savings there. But at the end of the day...I'm pulling rods from pistons for the 365 Mags that people could use as well.
I'm also keen on having a shortblock as a spare...ready to go.
If I go aftermarket rod, I'll go 6.385" for sure. Better rod ratio and lighter piston options etc.
Going to a 4.250" stroke in the future...the 6.385" rod is a better option as well, though would not be keen on replacing the pistons etc. So in that respect, getting new cores and starting fresh would be a more cost effective option.
I'm looking at the machining costs to get the ARP bolts in, and big ends resized. Starts adding up quick. I can do all the cleanup on them, deburring etc. So savings there. But at the end of the day...I'm pulling rods from pistons for the 365 Mags that people could use as well.
I'm also keen on having a shortblock as a spare...ready to go.
08-22-2023 | 11:48 AM
#13
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Joined: Oct 2000
Posts: 4,541
Likes: 107
From: Western Michigan
If I use my GM 7/16 rods, I'll of course end up with the 6.135 rods.
If I go aftermarket rod, I'll go 6.385" for sure. Better rod ratio and lighter piston options etc.
Going to a 4.250" stroke in the future...the 6.385" rod is a better option as well, though would not be keen on replacing the pistons etc. So in that respect, getting new cores and starting fresh would be a more cost effective option.
I'm looking at the machining costs to get the ARP bolts in, and big ends resized. Starts adding up quick. I can do all the cleanup on them, deburring etc. So savings there. But at the end of the day...I'm pulling rods from pistons for the 365 Mags that people could use as well.
I'm also keen on having a shortblock as a spare...ready to go.
If I go aftermarket rod, I'll go 6.385" for sure. Better rod ratio and lighter piston options etc.
Going to a 4.250" stroke in the future...the 6.385" rod is a better option as well, though would not be keen on replacing the pistons etc. So in that respect, getting new cores and starting fresh would be a more cost effective option.
I'm looking at the machining costs to get the ARP bolts in, and big ends resized. Starts adding up quick. I can do all the cleanup on them, deburring etc. So savings there. But at the end of the day...I'm pulling rods from pistons for the 365 Mags that people could use as well.
I'm also keen on having a shortblock as a spare...ready to go.
