No real surprises on the heads:
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74 NovaMan's 1979 Chevy Truck - LS Swap - 5/6 Drop
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Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Cylinder bores are pretty consistent:
Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Lifters looked ok. To be honest I did not look at them very closely as I planning on replacing them at this point. I did see more rusty gunk in the lifter valley in one spot.
Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Pistons came out easily (no ridge on the cylinder). All looked pretty consistent. Not sure if the scoring on the skirts is anything to be overly concerned about. I'd like to reuse the pistons and rods.
Last edited by 74NovaMan; December 23, 2019, 09:08 AM.Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Rod bearings looked very good. There was some light scoring on the mains.
Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Crank looked very good. I ran out of workbench space though.
Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Planning on dropping off the block and heads at the machine shop today.
Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Just got word that the crankshaft cleaned up with just a polish. I'll pick that up in a few days. Should be about $150 with bearings.
In other news, I've spent far too much time looking at connecting rod information and looking for piston/rod combos. My machinist has not measured anything yet but did not like the look of the piston skirts and said replacement is probably warranted. I can get .005 over forged pistons for $499.99: https://www.summitracing.com/search/...re-in/3-785-in .030 over versions are the same price but come with the need for $480 in boring the cylinders. Any of these pistons require a 6.125 inch long connecting rod (which may be a worthwhile upgrade anyway). This is a likely candidate: https://www.summitracing.com/parts/s...2521/overview/ If I believe the internet, these are a deal over new bolts and resizing the rod ends (to the extent that is even possible on the LS cracked cap rods).
There are too many variables and none of the cheap stuff makes much sense to me given the assumption of piston replacement.
Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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I like the Scat H-beam rods in my Fords - no clue if there is any issues with them in an LS engine. As to the bore - IF (IIIIIFFFFFFF) the bores are round and straight - then honing them to size probably will be OK. If the skirts are worn, I would suspect that there could be some wear in the cylinders as well. Honing does not always square up everything and remove the taper. What does the machine shop charge to hone ($150 - $200)?
Since we are spending your money, I would put a stroker kit in it while it is apart. As someone once said - there is no replacement for displacement!
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like most anything, replace the rod bolts with ARP and it will be fine. If you're planning on more then 600 hp, then rods are important.... at least that seems to be the prevailing theory. If you're not planning more then 6500 rpm, you don't even need to change the bolts.Doing it all wrong since 1966
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Originally posted by cstmwgn View PostI like the Scat H-beam rods in my Fords - no clue if there is any issues with them in an LS engine. As to the bore - IF (IIIIIFFFFFFF) the bores are round and straight - then honing them to size probably will be OK. If the skirts are worn, I would suspect that there could be some wear in the cylinders as well. Honing does not always square up everything and remove the taper. What does the machine shop charge to hone ($150 - $200)?
Since we are spending your money, I would put a stroker kit in it while it is apart. As someone once said - there is no replacement for displacement!Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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Originally posted by SuperBuickGuy View Postlike most anything, replace the rod bolts with ARP and it will be fine. If you're planning on more then 600 hp, then rods are important.... at least that seems to be the prevailing theory. If you're not planning more then 6500 rpm, you don't even need to change the bolts.
Given that the pistons need replacing I have it broken down to 2 options.
Option 1:
Stock style oversize piston to work with my original rods are $290: https://www.summitracing.com/parts/s...make/chevrolet
These require boring the cylinders: $480
ARP rod bolts: $97
Total: $867
Option 2:
Forged pistons in either .005 over (for a hone) or .030 over (bore) $500 https://www.summitracing.com/parts/s...make/chevrolet
Boring the cylinders (worst case assumption) $480
New Rods $440 https://www.summitracing.com/parts/s...2521/overview/
Total (worst case): $1,420
The cost difference is $553. Seeing as I'm rapidly approaching $3,000 why stop short on doing it right the first time. It also sets me up nicely for forced induction or nitrous (which may never happen). If I only needed rings, I'd just slap it together and call it a day.Chris - HRPT Long Haul 03, 04, 05, 13, 14, 15,16 & 18
74 Nova Project
66 Mustang GT Project
92 Camaro RS Convertible Project
79 Chevy Truck Project
1956 Cadillac Project
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if you do forced induction, remember to increase the gap on your rings..... that would really bite to spend all that money then hang a ring and break a land....
oh yeah, and buy the ARP boltsLast edited by SuperBuickGuy; January 3, 2020, 08:33 PM.Doing it all wrong since 1966
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