421 stroker question vs. LS Swap ~ experts please
2nd Gear
Joined: Aug 2023
Posts: 2
Likes: 1
I have a 1990 C4 with a ZF-6 speed, and 4:10 gears, Stage 3 clutch with a single mass flywheel. TPIS Headers ceramic coated, Corsa Exhaust.
I built a 421 stroker a couple of years ago, and was power hungry. Here's the rough engine specs.
Dart Shp Block
4340 3.875 stroker crank
6.0" Oliver billet rods
Srp forged pistons
Comp Cams 236/245 @.050 duration, 5.70intake .574 exhaust 113 LSA
Dart pro1 230cc cylinder heads
Air Gap RPM intake
Comp Cams magnum 1.5 Roller Rockers
Howards +.030 Bar lifters for the Dart Block
MSD Distributor
FiTech 600 power adder Throttle body EFI self tuning
Here's the question. I sold my C5 last week, and am considering trying to tame the C4 into more of a daily driver type car (it has air conditioning). Should I get some AFR 210cc heads and a 225/235 ish cam as a good streetable setup? I'm going nuts trying to decide on cylinder heads and cam because everyone I ask about it is leaning in hard on it making 600 plus HP (let it rev / breathe...big heads and cam)..I really want it to drive nice. Or is that too much to ask.
I'm also considering an LS Swap, but am not sure if I could figure out what to do with all the wiring....and what to do with the 421 that works terrific except a little rough for a street engine. Plan B could be to just get a C5 Z06.
Any and all suggestions/opinions are welcome.
I built a 421 stroker a couple of years ago, and was power hungry. Here's the rough engine specs.
Dart Shp Block
4340 3.875 stroker crank
6.0" Oliver billet rods
Srp forged pistons
Comp Cams 236/245 @.050 duration, 5.70intake .574 exhaust 113 LSA
Dart pro1 230cc cylinder heads
Air Gap RPM intake
Comp Cams magnum 1.5 Roller Rockers
Howards +.030 Bar lifters for the Dart Block
MSD Distributor
FiTech 600 power adder Throttle body EFI self tuning
Here's the question. I sold my C5 last week, and am considering trying to tame the C4 into more of a daily driver type car (it has air conditioning). Should I get some AFR 210cc heads and a 225/235 ish cam as a good streetable setup? I'm going nuts trying to decide on cylinder heads and cam because everyone I ask about it is leaning in hard on it making 600 plus HP (let it rev / breathe...big heads and cam)..I really want it to drive nice. Or is that too much to ask.
I'm also considering an LS Swap, but am not sure if I could figure out what to do with all the wiring....and what to do with the 421 that works terrific except a little rough for a street engine. Plan B could be to just get a C5 Z06.
Any and all suggestions/opinions are welcome.