Stock 5.3 turbo build

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Feb 19, 2019 | 12:36 PM

#21

JoeNova

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From: Ohio

Quote:

Originally Posted by topbrent

Cass at DoctorDiff is going to be releasing a 3.23 gear set for the Dana 60. We have one of the prototype sets. Andy Finkbeiner at ARengineering installed the other prototype set of 3.23's in his Strange S-60 and they work great.

Its not impossible to make a ratio less than 3.54 for the S60. The problem is that in order to lower the ratio, you need to increase the teeth on the pinion and decrease the teeth on the ring gear to get a lower ratio.
Below 3.54, the increased tooth count on the pinion makes the diameter of the pinion increase to a point where the ring gear must become incredibly thin to compensate.
You end up with a ring gear too thin to be strong or get bolts deep into.

Feb 28, 2019 | 03:39 AM

#22

lscamaro234

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hey everyone thanks for the input especially the info on the 3.23 gear ratios.
ive got my motor trans combo mounted in the car now with the new mounts and headers on. i have decided on a mild rebuild of the engine.

5.3/862 castings
going to be installing new bearings /rings
main and head studs arp
face heads and deck , and hone the cylinders.
stock rods and pistons.

i have been looking into cams , seems with the turbos all the companies have quite a different idea on the setup , wide variety of different lsa's and advance.
also seems to be a hot topic of reverse pattern cams or not.

i have a reccomendation from a few , at the moment i am liking the brian tooley stage 2. really not sure why.
anyone have similar build or any experience with a turbo cam for street car .

Feb 28, 2019 | 06:21 AM

#23

JoeNova

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From: Ohio

Pick a cam that behaves the way you want it to on the street. Ignore the turbo part. Everyone gets way too hung up on "turbo" cams.

Jun 3, 2019 | 04:21 AM

#24

lscamaro234

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been hearing mixed opinions , does anyone have any 1st hand experience running boosted 5.3 with the smaller gen3 rods. im chasing 800hp flywheel , but wont be hammered at the track a lot , more a street car

Jun 5, 2019 | 02:47 AM

#25

gametech

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From: Stockbridge GA

Quote:

Originally Posted by JoeNova

Pick a cam that behaves the way you want it to on the street. Ignore the turbo part. Everyone gets way too hung up on "turbo" cams.

No kidding. Remember back when people just threw in an '02+ ls6 cam for a build like this? People get WAY too hung up on the idea of "turbo" cams.

Jun 6, 2019 | 11:23 AM

#26

Project GatTagO

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From: Little Austin

Quote:

Originally Posted by gametech

No kidding. Remember back when people just threw in an '02+ ls6 cam for a build like this? People get WAY too hung up on the idea of "turbo" cams.

As I recall, those cams worked great.

Andrew

Jun 6, 2019 | 01:36 PM

#27

fegoins

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Joined: Dec 2016

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Quote:

Originally Posted by lscamaro234

... i have been looking into cams , seems with the turbos all the companies have quite a different idea on the setup , wide variety of different lsa's and advance.
also seems to be a hot topic of reverse pattern cams or not.

i have a reccomendation from a few , at the moment i am liking the brian tooley stage 2. really not sure why.
anyone have similar build or any experience with a turbo cam for street car .

Gen 4 4.8L 78/75 on e85, BTR Stage 2 cam. 770whp at 18psi, conservative timing 12 and 11.0 afr. Car runs great on the street and pulls hard to 7k at the track. Spools around 3500. Enough vacuum for power brakes.

If your goal is 500whp you don't need it though. Use the stage 2 sloppy cam or whatever you already have and save a couple hundred bucks.

Jun 6, 2019 | 02:11 PM

#28

DavidBoren

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From: Portland, Oregon

For your original goal of 500rwhp, I would use the stock cam and invest in some GenIV rods/pistons.

For 800hp at the flywheel, I would definitely want GenIV rods/pistons, and maybe a LS9 cam. The previously mentioned LS2/6 cam would work fine for this, as well.