Gen 3 stock combinations

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Mar 8, 2020 | 09:21 PM

wilts42

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Gen 3 stock combinations

Did the Gen 3 motors ever have the good rods stock? My issue is im about to pull the trigger on a holly system for my LM7 which is a 24T. But what if i want the stronger rods? My understanding was better rods where only 58T? But if I buy for what i have now im screwed later if i want to have the better rods?

Mar 8, 2020 | 09:32 PM

Che70velle

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Quote:

Originally Posted by wilts42

The later run of Gen3’s had the good rods.

Mar 8, 2020 | 09:42 PM

G Atsma

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It's all relative. Even the earlier rods are still very strong. What are you going to be using the engine for?

Mar 9, 2020 | 02:51 AM

Darth_V8r

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Gen 4 rods will bolt to a gen 3 crank. The rods themselves do not care about the reluctor tooth count. If you also want a gen 4 crank, the reluctor can be swapped

Mar 9, 2020 | 04:58 AM

wilts42

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is it true that gen 3 motors with better rods have 13 mm bolts on the intake valley? How else can you identify a gen 3 with better rods in the junkyard?

Mar 9, 2020 | 09:00 AM

rpturbo

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Quote:

Originally Posted by wilts42

is it true that gen 3 motors with better rods have 13 mm bolts on the intake valley? How else can you identify a gen 3 with better rods in the junkyard?

The easiest way is build date. Now that does not guarantee the engine wasn't swapped at some point, but 05-07 engines have the better rods. GM did a mid year change over in 04, so the 04 is a crapshoot.