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Just put the car on the dyno. Made 544rwhp/505rwtq
TSP 408, TSP 247cc heads, ported FAST 102, 247/254 .632/.632 112+4 pat g cam, weisco -3cc flat top pistons, k1 rods and crank, TSP longtubes and true duals. Tuned by Sam Miller
All these dyno numbers are great to look at, but we all know these dynos are not equal. I'm curious to see what your combos have run at the track... or are they just for show and tell?
All these dyno numbers are great to look at, but we all know these dynos are not equal. I'm curious to see what your combos have run at the track... or are they just for show and tell?
x2, 550rwhp in a reasonably light car should trap somewhere around 130.
Iron block 408 11.6:1 compression
K1 rods and crank
Wiseco pistons
Pistons and bearings ceramic coated.
Super Victor Jr. Intake/6061 Aarons elbow
Dart Pro 1 heads and custom grind nitrous cam by Landspeed Development.
RPM built A4 with moser 9" rear
517/463 N/A
750/735 on spray at 5500 RPM's (dyno stopped reading)
LME LS2 402, 11.7 with 62cc
TFS215 opened up to 4.00"
Pat G 242/246, .605"/.615", 113 +3
Fast 102 port matched
NW102
1 7/8 hooker headers through 3" high flow cats with cutout open
4L60E
w/ Circle D 3E and Moser 9"
Made 530hp 487tq at the wheels (cant find the graph right now)
620hp 560tq engine dyno (attached below)
LME LS2 402, 11.7 with 62cc
TFS215 opened up to 4.00"
Pat G 242/246, .605"/.615", 113 +3
Fast 102 port matched
NW102
1 7/8 hooker headers through 3" high flow cats with cutout open
4L60E
w/ Circle D 3E and Moser 9"
That's awesome!! Especially in a car that's auto equipped.
Seeing the average hp these 408s are making, most of these cars should be running 130+ mph in a full weight f-body. I would like to see what most of these cars do run.
Has anyone done a 408 stroker using Advanced induction port n polished 243 heads? Wondering what power they make vs trick flows, AFRs, etc? I have an LQ9 motor with Ai port n polished 243 heads. Considering doing a 408 but could save money by keeping the Ai heads rather than buying another aftermarket head.
Has anyone done a 408 stroker using Advanced induction port n polished 243 heads? Wondering what power they make vs trick flows, AFRs, etc? I have an LQ9 motor with Ai port n polished 243 heads. Considering doing a 408 but could save money by keeping the Ai heads rather than buying another aftermarket head.
Quick and easy proven recipe is taking a 408ci short block. Set the 11.1:0 compression. Fast 102 mm intake/throttle body. AFR 245 heads out the box... 1 7/8 headers and a cam in the 240s. This combo will result in a 640 horse motor at the flywheel!
My 408 has put down 497rwhp and 468rwtq. That's on Ticks dyno with the converter unlocked and losing fuel pressure at high rpm, they haven't put it back on the dyno since they put in my new fuel pump. So it could be over 500rwhp now. Ticks dyno is known for reading low numbers compared to other dynojets, usually around 20rwhp low. I really don't care about dyno numbers, we can't race dyno numbers. As soon as I have the money to pick it up and put some drag radials on it I will have a few slips from Darlington Dragway.
My 408:
6.0 ls1 block re-sleeved.
11:1 compression
Dart pro1 cnc'd heads
Vic jr. Intake
237/242 113LSA
All internals 4340 chromemoly
Th350 3500k loose stall
8.5" 10 bolt
1-7/8 hooker headers
2.5" mandrel bent tru duals(3.5" coming soon)
Made 627HP 589TQ at the FLYWHEEL. haven't had the chance to put it on a chassis dyno yet.
05-16-2014, 05:52 PM
