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10-21-2009, 06:22 PM #1
Nastiest cam for a street/ budget build.
I am going to be building a cast iron 5.3L bored out to 3.898" (5.7L) I already have a LS1 crank & rods and I will be adding foraged pistons. I also plan to run the Edelbrock performer cab intake & long tubes. I am thinking hard about Texas Speeds Stage 1 PRC LS6 head package for two reasons, #1 I don't need the smaller combustion chamber to raise compression since I'm already buying pistons. and # 2 $1,500 for heads & cams seems like I nice price.
What compression ratio should I aim for and what cam would suit the engine I'm building best.
I would actually prefer a rough loping idle
Thanks,
P.S. the engine is going into a 1995 Nissan pickup
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10-21-2009, 06:27 PM #2
- Join Date
- Aug 2005
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- Thornton, CO
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Red Tint Jewelcoat- 2008 Trailblazer SS
You want sound over performance?
What gears and tranny will this truck have?
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10-21-2009, 06:39 PM #3
Oh no I want performance but it seems like sometimes now days people don't mind giving up some performance in the name of a smoother idle, I do not care about idle
The truck has 3.73 Gears in a fortified ford 8.8 rear. I'm using a nissan 5-speed
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10-21-2009, 06:49 PM #4
- Join Date
- Aug 2005
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- Thornton, CO
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Red Tint Jewelcoat- 2008 Trailblazer SS
Well....any plans to upgrade the gears??
Most larger 'donkey dick' cams like at least a 4.11...ideally 4.30 or 4.56.
I think for a street cruiser, a 232/232 598/609 on either a 111 or 112 would be perfect. Nice solid powerband, decent lope, and a good driver.2008 Trailblazer SS
Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
Lowered, HID's, tinted.
1999 Pontiac Trans Am WS.6 #1747 SOLD
531.1 RWHP 481.3 FT/Pounds all motor.
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10-21-2009, 07:34 PM #5
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10-22-2009, 02:02 AM #6
If I need to change the gears I can, I can live with 4.10's
The tranny is the same one used in the 90-98 Twinturbo 300ZX and 89-99 Twinturbo Skylines. and has been proven to hold 800+ WHP and 600+ WTQ
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10-22-2009, 05:29 AM #7
- Join Date
- Dec 2005
- Location
- Laurel, Maryland
- Posts
- 4,975
2000 Grand Prix GTP- 2000 Trans Am WS6 M6
Interesting build...when you get it done, you should join my buddy and I on I-95
2000 Pontiac Trans Am WS6 M6: 427ci LS3, Built T56, Moser 9" w/ 4.11 Gearing, Full Suspension, and 6-point Cage.
2000 Pontiac Grand Prix GTP: Twincharged w/ a T67 Turbocharger
2007 Chevrolet 3500 Dually Duramax: 3" Downpipe, Dual 4" Exhaust, EFILive Tuning
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10-22-2009, 05:44 AM #8
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10-22-2009, 08:33 AM #9
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10-22-2009, 03:42 PM #10
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10-22-2009, 05:23 PM #11
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10-22-2009, 05:58 PM #12
4.30's are doable, would those PRC LS6 heads flow enough to justify a MS4 cam and the bigger single plane Victor Jr intake manifold? or am I thinking about too much cam for the heads.
Sorry about the potentially stupid questions but I have never put a domestic V8 together for performance before. I'm used to force fed 3.0L 6 bangers.Last edited by 1fastkingcab; 10-22-2009 at 06:06 PM.
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10-22-2009, 06:04 PM #13
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10-24-2009, 06:44 AM #14
Keep the 5.3 and put in a Comp Cam Thumpr with the carb, intake and stock heads. 96 hp increase with a base of 323 with the carb setup. That puts you around 420hp with $2000 in parts. Car Craft 2007 article. I'm doing this same thing right now to my 55 Belair
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10-24-2009, 07:27 AM #15
I just noticed the Victor Jr. comment.
If you are going carb, you don't want one of the camshafts that are ground for the fuel injected setups,,,which is what you will find from most LS suppliers.
Carbs like much tighter lobe seperations, they make more power that way and also will give you the sound you are looking for.
Might be better off calling Comp Cams and just having a custom cam done. It costs the same as the "off the shelf" grinds and you'll get something tailored closer to your particular application.
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10-24-2009, 09:46 AM #16
Say NO! to carb'ing these motors. That's what old guys do to them
I am 32, so I am old enough to have built and run a few dozen small blocks in my day. Yes, carb tuning is easier, but it's pretty crude by comparison. No reason to give away all of your fuel economy (as well as the rest of fuel injected advantages).
What are the details of this truck? Is it something 2wd and light weight or is it a 4wd truck?
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10-24-2009, 03:00 PM #17
I think Frost is just looking out for long term business so it's in his best interest
There are more and more people retrofitting these engines with carbs now to simplify things. Nothing wrong with that, us old geasers still know how to tune them
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10-24-2009, 03:49 PM #18
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10-24-2009, 03:50 PM #19
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10-24-2009, 06:46 PM #20
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