Ls7 442 ci. build help

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Jan 7, 2019 | 02:14 PM

booboo37

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From: mi

Ls7 442 ci. build help

Building a street strip wet sump Ls7 442ci. pump gas motor and wondering whats everyone using for main and rod bearings ??

I have new PRC 265 heads wth 700 lift springs and wondering if guys just rebiuld the stock Ls7 rockers or goto aftermarket ?? If rebuilding who's kit ??

Also need help picking a oil pump and lifters and timing chain and gears...

Jan 7, 2019 | 07:09 PM

Che70velle

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Quote:

Originally Posted by booboo37

I like King bearings.
Nothing wrong with stock rockers, depending on lift. What camshaft are you using?
Id go with a Melling 10296 pump and have it ported by a reputable shop. Tony Mamo sells these.
Lifters depends on cam selection.
I run billet timing sets and Iwis chains.
You’ll likely get lots of opinions on this stuff. Just my .02...

Jan 7, 2019 | 07:19 PM

01CamaroSSTx

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Quote:

Originally Posted by booboo37

I'm running the Clevite H-Series without issues. My PRC's had .700 lift springs also and I just ran the stock rocker arms with the Straub trunnion upgrade with no issues. I'd call Texas Speed for the Cloyes double roller timing chain and their ported LS oil pump. As for the lifters I would recommend the Johnson 2116's as they are the most forgiving with a .090 plunger travel and a recommended preload of .035 +/- .010

Jan 7, 2019 | 07:27 PM

01CamaroSSTx

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I will add that the stock rockers are only capable of up to .660 lift. This was what I was told from a professional LS engine builder in the industry. If your planning on going solid roller you will need full adjustable roller rocker arms. T&D and JESEL makes pedestal mounted rocker arms for the LS7's but a shaft mount system would probably be your best bet.

Jan 9, 2019 | 03:22 AM

booboo37

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From: mi

Yes around a .660 hydraulic roller cam.......are these the lifters your talking about.....2116LSR ..?
Thanks for the info....

Jan 9, 2019 | 10:01 AM

AndyTA

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Quote:

Originally Posted by Che70velle

You're far more experienced and know your stuff, but I wanted to ask - wouldn't the 10196 be a little overkill? at what point does one need to make the switch from a 195 to a 196? Is it dependent on RPM goals?

Thanks,
Andy

Jan 9, 2019 | 05:01 PM

Che70velle

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Originally Posted by AndyTA

Basically the 10296 pushes 13% more volume, which isn’t much with a 6 quart pan. The extra oil volume won’t hurt a thing in a street/strip car, and will actually help cool the bearings.