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#1 |
![]() Join Date: Jan 2010
Location: Freedom Pa
Posts: 275
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I was just wondering what it would cost to build a 380 cube LT5(stock LT-5 block with 4" sleeves & stock crank offset ground to 3.7??"). I guess this is our "383" of the LT-5 world. Too bad it took this long to figure it out! I guess we would have 350's with topend jobs & probably no 368's or 385's, then the super mega-strokers. I also think that if rebuilding, more aggressive cams are a lot more reasonably installed. And, I wonder what the torque numbers would look like. Also, any downsides to this combo? Thanks, Tim
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#2 |
![]() Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,170
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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#3 |
![]() ![]() ![]() Join Date: May 2007
Location: Peoria, AZ
Posts: 9,154
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No downside and about 10K
This included Petes intake cams and porting on the heads.
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director ![]() 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V Last edited by GOLDCYLON; 09-18-2013 at 08:42 AM. |
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#4 |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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DIY for probably 3-4K
probably closer to 4 with the liner cost
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 09-17-2013 at 08:39 PM. |
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#5 |
![]() Join Date: Jan 2004
Location: Alex VA
Posts: 1,087
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price out what you "think" it will cost and double it (ask me how I know)
seriously, I think you are looking at a bit more than 10k, but these guys probably have cheaper and more current sources than I do. contact pete and marc haibeck and they'll tell you "it depends on what the car needs" and they won't typically know until they get it apart soooo.... to answer your question keeping the stock rods? stock cams? I'd run pete's intake and stock exh. porting the heads (you better) CNC or hand port??? have the headers, exh, blah blah, that you need to make all of it work it adds up real quick price out all the parts you need, labor, and options you want if you can do it for 4k, sign me up for 3 of them!!!
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95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP) |
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#6 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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When my 5.7L had Pete's intake cams, I really thought it was a very sweet motor. Very smooth. And it was. I was concerned about adding the exhaust cam being too much, too lumpy, too raucous.
NOW, it is just perfect IMO. So tractable, so driveable. It does exactly what you want it to do and when. It would be difficult to go back. And so if I were to go to a larger displacement LT-5, I couldn't imagine spending the money without doing the cams. If anything, the larger displacement NEEDS the bigger cams to take full advantage of the additional cubes.
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#7 |
![]() Join Date: Jan 2010
Location: Freedom Pa
Posts: 275
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Wouldn't you have to change rods????? Isn't this how your gaining the cubes.....by offset grinding the crank & using small SBC rod journals.
I think I would go with something like Oliver or Manley. And cams, wouldn't it be a waste to not go bigger @ $1800 for both Intake & Exhaust? I know you would have to buy new tappets.....how much are they? But the cost to install while the engine is out has got to be a lot more cost effective. |
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#8 |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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I believe stock rods work.....need liners and pistons...cams come up now and again. I have a few extra sets of my own I got cheap....
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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#9 |
![]() Join Date: Feb 2009
Location: Alexandria, Virginia
Posts: 1,469
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If your doing an offset grind on the crank you have to go longer rods, don't you?
Rich
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1990 Bright Red Coupe #608 380 Stroker, Ported Heads/Intake/Housings/TB Haibeck Secondary Delete Chip / Pete's Cams George Braml Intake / FIC Injectors Coated SW Headers / Corsa Bill Boudreau B/B ZF6 / Viper 4.10 gears Ron Davis Radiator Pioneer AVIC-Z140BH NAV Fikse FM5's 285 / 335 / C6 Brakes WAZOO Member |
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#10 |
![]() Join Date: Jan 2010
Location: Freedom Pa
Posts: 275
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Not necessarily......you have to go to smaller connecting rod big end diameter. This is where you gain your throw to increase the stroke. You basically "relocate" the centerline of the rod to further out on the crank. The smaller diameter rod journal lets you do this.
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Tags |
3.775, 380, cams, sleeves, stroker |
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