C4 project
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2nd Gear
Joined: Jan 2024
Posts: 2
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C4 project
Hey guys long time lurker first time poster I bought my corvette about a year ago and for the most part I'm happy with it but its definitely showing its age and I basically have two ideas to kinda wake it up in a sense i was thinking of doing a gen V LT1 swap with the 6l80 behind it or simply building the gen II lt1 currently in it I'm aiming for around 375-400 whp by time its all said and done but planning on doing most of the supporting mods (brakes fuel delivery suspension ect.) in the mean time has anyone on the forum done a full gen V swap before?
Intermediate
Joined: Jan 2024
Posts: 49
Likes: 23
383 rotoatng assembly, long tubes headers and mild cam can get you to 400HP with out it becoming a time sucking science project. Unless that's what you want. Once you get into interfacng modern PCM's to legacy guages the price and time involved goes way up. The all the little thngs like custom wiring hoses for cooling and A/C can really add up.
Last edited by icsamerica; Jan 22, 2024 at 07:51 PM.
Thread Starter
2nd Gear
Joined: Jan 2024
Posts: 2
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I've seen those builds make 400 bhp but closer to the mid 300s at the wheel I'm sure if I wanted to I could look at boost at that point if everything else was in line
Intermediate
Joined: Jan 2024
Posts: 49
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Option 2, clearance the block for a 3.875 stroke 396. That would be fun too. All the torque from the stroke and the RPM from the short runner intake.
Pro
Joined: Aug 2020
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From: Liliha Bakery stuffing my face with coco puffs!
Melting Slicks
Joined: Mar 2002
Posts: 2,873
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From: Sligo PA
An LS swap would easily give you that kind of power and cost a 1/4 of the money. Also I don't think a 6L90 is going to fit very well. I have a LQ9 with a 4L80e in mine and it was a tight squeeze. But mine is 500 hp without the nitrous. 400 hp is easy with an LS. And the parts are a lot more common.
