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5.3 or ls6 with torquer v3

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Old Feb 11, 2008 | 01:15 AM
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Default 5.3 or ls6 with torquer v3

i have searched and have not been able to come up with good evidence to go either way. should i get 5.3's or ls6' to run with a torquer v3? either way they are going to be ported, and if i get the 5.3's i will probably be swapping the valves from the ls6 heads into them.
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Old Feb 11, 2008 | 07:40 AM
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both heads are decent. Be sure to check PTV since the torquer v3 has a rather high lift. ~.649"
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Old Feb 11, 2008 | 09:27 AM
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indeed i will be looking out for this...but if i have to i will fly cut the pistons no big deal
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Old Feb 11, 2008 | 10:34 AM
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You and me both.
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Old Feb 11, 2008 | 10:46 AM
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When I measured with my 5.3's and Torquer 3 I zero ( too close to measure) clearance on the intake. I had TSP mill my heads to 59cc's and used clay to measure clearance.
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Old Feb 11, 2008 | 12:46 PM
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ive got that combo with PRC 5.3's and tqr3. TSP told me that the .644" lift on the intkae side would clear with a stock GM gasket and no additional milling
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Old Feb 11, 2008 | 01:15 PM
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ive got 59cc LS6's and stock head gaskets... no problem here...
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Old Feb 11, 2008 | 01:18 PM
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5.3L and v.3 on my '98 LS1, no flycutting at all, made 420+rwhp through a 3800stall, bolt ons and full exhaust.
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Old Feb 11, 2008 | 01:30 PM
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i had the 5.3l TSP's and the Torquer 3 with .040 head gaskets, no PTV contact at all
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Old Feb 11, 2008 | 03:17 PM
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Isn't it the duration that causes PTV issues? Low 230's should be fine.
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Old Feb 11, 2008 | 03:38 PM
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They are both good heads and proven performers but if I was you and had both sets I would put the LS6 on. The combustion chamber on the LS6's are what makes them and the D shaped exhaust ports. The only advantage I would see in the 5.3 is compression that I know of but Ive never put 5.3 on LS motors in a car.
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Old Feb 11, 2008 | 04:53 PM
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Smaller runners, quicker on the power.
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Old Feb 11, 2008 | 08:24 PM
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i guess im going with which ever i find cheaper
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Old Feb 11, 2008 | 11:08 PM
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5.3s, stock GM MLS gasket, and no problems. Unmilled heads right out of the box. #s in sig.
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Old Feb 12, 2008 | 08:15 AM
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^ Looking good man. That's what I wanted to see. That ported Fast has to be helping pretty good. So I would expect 30-35 rwhp with the heads alone on my current setup and an extra 10 or so for the LS6 and 30# SVO's.
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Old Feb 12, 2008 | 09:34 AM
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Originally Posted by Redlinez
^ Looking good man. That's what I wanted to see. That ported Fast has to be helping pretty good. So I would expect 30-35 rwhp with the heads alone on my current setup and an extra 10 or so for the LS6 and 30# SVO's.
I need a Fast 90/90 and some injectors i would be right up there with sweet if not passed hime
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