Engines, they are the sexiest allotment of any activity but can additionally be one of the added big-ticket pieces of the puzzle. Sure, we would all like to accept abundant banknote to adjustment up a absolutely outfitted Chevrolet Achievement crate engine, but that’s a lot of cash, and if you’re not digging the artificial assimilation and adamant bankrupt manifolds again you’re aloof advantageous for items you’re not activity to use.
For our accepted Duralast Week to Wicked, presented by CPP, activity we capital to anatomy a nice, affordable cruiser out of a 1967 Chevy Nova SS that had been admiring in storage. We didn’t allegation 600 hp; article in the mid-400s would be perfect, and if it was failing aluminum, all the better. We additionally capital EFI, but article bigger attractive than a Tupperware branch intake. After absorption the anatomy over some brews, we came up with an aluminum-block LS agent with a FiTech EFI arrangement utilizing one of their blacked-out bogus intakes. Hey, the car was black, so it would alike match. And while some of you ability be adage “Another LS swap?” the actuality is that it’s adamantine to exhausted the achievement amount and accessible swapability of an LS mill.
In agreement of the LS swap, we came up with a beneath big-ticket way to get LS ability beneath the awning of our Nova SS: AutoZone. Yep, LS-powered cars accept been about continued abundant that you can now get a remanufactured L99 (PN 262206) or LS3 (PN 262536) agent from the aforementioned genitalia abundance you go to for all your added bits. The L99 would be a backup agent for a agent that had capricious valve timing (VVT) and displacement on appeal (DOD). The 6.2L LS3, however, would be absolute for our build. This is agnate to what came in a fifth-gen SS Camaro with a chiral transmission. The long-blocks retail for aloof beneath $4,000, and there’s a $1,200 amount allegation you allegation to amount into the math. This additionally makes them abnormally abundant for replacing the annoyed LS3/L99 in your avant-garde beef ride.
The engines are rebuilt and accumulated actuality in the U.S. by Dahmer Powertrain and accessible through AutoZone. For an exact OE fit application, they backpack a three-year/100,000 mile warranty. The long-blocks use a absolutely machined 6.2L LS3 block forth with high-flowing LS3 rec anchorage active that accept additionally been gone through.
Internally it’s aloof like a branch LS3 with a casting crank, artificial powder-metal rods, and hypereutectic collapsed top pistons forth with a 58x reluctor wheel. The hydraulic roller cam (PN 12623063) specs out at a bourgeois 204/211 continuance with lift of 0.551 inch assimilation and 0.522 inch exhaust. It’s nice alive there’s addition 60-plus hp on tap if we anytime appetite to add a added advancing cam. Factory-style rockers and the all-over dejected springs annular out the LS3’s valvetrain. The upside with this cam is that our Nova will be a dream to drive about town.
This is how the 430-hp-rated long-block alien to us from Dahmer Powertrain. This was absolute for us back it was aggregate we bare and annihilation we didn’t. We accept a big assemblage of aftermarket parts, such as an assimilation and convolute drive system, that we appetite to use on this build, and it would accept been a decay to buy genitalia we didn’t allegation aloof to bung them aside. In any event, this is a lot of long-block for aloof beneath 4 grand.
FiTech absorbed us up with their complete LS Bandy arrangement based about this low-rise bogus intake. We’ve begin these accomplish acceptable power, but they do accord up some torque compared to the best runners of a branch blended intake. The upside is the assimilation is a accomplished lot bigger looking.
The FiTech assimilation came complete with batten ammunition rails, injectors, lines, and a 102mm cable-actuated burke body. The assimilation mates to the active by way of factory-style O-rings.
Rounding out the FiTech EFI amalgamation was their LS Bandy kit, which had the ECU, programmer screen, MAP sensor, O2 sensor, and all the all-important harnesses and base bits.
We were able to borrow a branch LS damper for the dyno and aces up Duralast sensors for our agent afore hitting Westech’s Superflow 902 dyno. For bankrupt we went with a set of Hooker dyno headers, with beneficiary extensions, which we had on hand.
After bushing the agent with break-in oil and the dyno’s ammunition catchbasin with 91-octane Rocket pump gas, we were accessible to run the LS3 and accomplish some ability pulls.
Of course, afore activity all max-effort, Steve Brule ran the new Dahmer/AutoZone crate agent through his absolute break-in cycle.
We begin the candied atom to be 28-degrees of timing area the LS3 fabricated 490 hp at 6,500 rpm and 433 lb-ft of torque at 5,500 rpm. Not bad for a crate agent rated at 430 hp! And while torque was bottomward a bit, the continued collapsed torque “curve” should advice accomplish our Duralast Week to Wicked, Presented by CPP, 1967 Nova SS a bang to drive on the street!
FiTech Ultimate LS Induction Arrangement dyno analysis at Westech Performance
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If you are architecture your own restomod use checkout code: W2WNOVA10 back you adjustment genitalia to get 10-percent off the price.
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