have a 5.3 lm7 in a 66 c10 new to forum have questions
10-14-2015 | 08:22 PM
#1
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have a 5.3 lm7 in a 66 c10 new to forum have questions I'm new to this forum I have a 66 c10 has a 5.3 lm7 I'm looking at putting a Texas speed 228r 112 lsa cam with a 3000 yank stall I have a pair 243 heads would I be better off with my 862s it's gonna be a street driven truck
10-14-2015 | 09:18 PM
#2
In general I would say the 243 heads are always better. If you can swing it, recommend milling them to 61cc for compression. That cam might be a bit big, but since you're stalling it also, might be ok
10-15-2015 | 01:39 PM
#3
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From: Wilmington, De
Either mill the 243s to retain compression, or switch to flattop pistons.
Or do both.
The 243s are superior to the 862s, and since you have a pair, it doesn't make sense to not use them. I would select a different camshaft, though.
Or do both.
The 243s are superior to the 862s, and since you have a pair, it doesn't make sense to not use them. I would select a different camshaft, though.