Originally posted by 74NovaMan
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74 NovaMan's 1979 Chevy Truck - LS Swap - 5/6 Drop
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Originally posted by SuperBuickGuy View Postthe rockers $190
https://www.ebay.com/itm/Chevy-GM-LS...72.m2749.l2649
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Originally posted by SuperBuickGuy View Postthe lifters $100
https://www.ebay.com/itm/GM-LS7-LS2-...72.m2749.l2649
the rockers $190
https://www.ebay.com/itm/Chevy-GM-LS...72.m2749.l2649
the buckets $34
https://www.ebay.com/itm/LS-GM-OEM-L...72.m2749.l2649
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the lifters $100
https://www.ebay.com/itm/GM-LS7-LS2-...72.m2749.l2649
the rockers $190
https://www.ebay.com/itm/Chevy-GM-LS...72.m2749.l2649
the buckets $34
https://www.ebay.com/itm/LS-GM-OEM-L...72.m2749.l2649Last edited by SuperBuickGuy; January 9, 2020, 11:28 PM.
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I went with the $200 choice because $85 seems way too cheap and the $200 guy has great feedback rating.
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$199.99 - 1,780 sold
https://www.ebay.com/itm/New-LS7-LS2...whQJc~ndk#rwid
$85.00 - no holders but the ad says 136 sold
https://www.ebay.com/itm/GM-Hydrauli...UAAOSwHnFVtPdL
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Another choice for rockers (thanks SBG) - $222.75 from a couple of sources
https://speedmaster79.com/Chevy-LS1-...tQ2EXEfpIwyvFI
These don't need guide plates but it's not clear if they require a special bolt or if the stock bolt will work. I like these over the speedway ones.
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Seeing as I'm in the spending mood I've been looking at the last of the valve train parts I need.
Lifter options:
GM lifters from EBAY. $200
https://www.ebay.com/itm/New-LS7-LS2...whQJc~ndk#rwid
Summit brand lifters $154
https://www.summitracing.com/parts/sum-htlskit
Both come with new holders and the Ebay lifters seem like the way to go if they are actually GM
Rocker Options:
Summit Brand for $226
https://www.summitracing.com/parts/sum-141556
Some nice looking Speedway motors ones for $270 (once I buy the studs and guide plates)
https://www.speedwaymotors.com/Stain...LS,326882.html
For the price difference I'm leaning towards the Speedway.
On the other hand, summit is running a 10% off Summit branded stuff (got that deal on the pistons and springs).
Not really looked into pushrods yet.
As always, I would love to hear your thoughts. Thanks.
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same decision path as I made... 10.9 is fine if you're not going to boost it, heck you could boost it, however 9.7 lets you run swill
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Well I finally laid eyes on the other set of heads. They are 823 castings and very nice pieces. From the link SBG provided above:
"LS7 Heads - These were the first heads to bring race car quality and technology to the OEM side. Although common in the aftermarket, CNC-porting of the intake and exhaust runners is usually too costly for a factory head. Titanium intake valves and sodium-filled exhaust valves were previously unheard of in a domestic factory engine, which revved to 7,200 rpm, another anomaly for a pushrod V-8. Right out of the box, these heads have supported more than 600 hp naturally aspirated and substantially more with forced induction. The large, raised runners and 12-degree valve angle enable substantial flow that supports large cubic inches ... the large valves necessitate a 4.125-inch or larger bore"
In addition to being rectangle port intake heads (the intake I have is for cathedral port) the 4.125 inch bore requirement will not work on a 5.3.
So we are using the 706 heads and our compression choices are 9.7 or 10.9. 10.9 seems a bit much and will be kind of on the edge for boost for me. 9.7 is the winner.
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Originally posted by Russell View PostI have not been paying attention what was the reason for the rebuild? Is it getting boost, or maybe some day?
Go with the small chamber heads.
https://youtu.be/gJCT5RvPCwM
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