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Here's my little pretty. 548/550, 408CI. 125 shot of juice. Small block with big block attitude
A 350 block with a 4" stroke 408 or a bored out 400 block with a 125 shot of NOS? -That's pushing the envelope either way, but with a stock 400, block overbored it's terrifying!
It is fascinating looking at all of these motors -- small blocks, big blocks, some more tame and some not -- everyone has their own flare. If you think about the total hours sunk into research, pondering part selection, getting the money together, measuring and fitting, skinned knuckles, cleaning parts, dyno tuning... it's mindblowing.
You guys all have some really nice hardware under the hood. Whole new level of respect when someone asks for advice.
A 350 block with a 4" stroke 408 or a bored out 400 block with a 125 shot of NOS? -That's pushing the envelope either way, but with a stock 400, block overbored it's terrifying!
Stock block or aftermarket?
Adam
Stock 350 block, 4 bolt, machined, built and dyno'd by a NASCAR engine builder. The 125 shot is in additional to the naturally asirpated HP.
Your best ET to date is at a DA of 2751? I'd say in reasonable conditions, by my standards, of DA around 1000, you'd be in the 12.9 range for sure. That correction factor brings the DA down to zero, I believe. What is the actual elevation of your track? Try to get to the track with temp and humidity as low as possible and barometer high as possible. From a hot day in July to a cool day in October my ETs will drop 3-4 tenths.
Yes DA was at least 2751. Went back into my time slips and DA was actually closer to 2900 . The track elevation is about 2550 and most times when I have been out DA has been in the 3000 to 3500 range
388 (0.060 over), scat crank and rods, probe pistons, heavily ported Edelbrock Performer RPM heads and matching intake, Yella Terra roller rockers. 11.1:1 compression, crane hydraulic roller cam and lifters, 238/242@0.050, 298/302 adv duration, .558" lift. Fitech fuel injection, msd ignition, backed by a steel flywheel and tko600 box. All work done, assembled and built (except machining) in my home garage. Has done over 14,000 street and track miles in the 17 months it's been in the car.
Nearing finished, on the engine stand. Here I discovered I needed spacers under my rocker covers!:
Shortly after installation:
A few weeks ago, mocking up a cold air intake tray. I should take an updated pic...:
385 studded 4 bolt
Probe domed forged pistons
Manley 6" Hbeams & pushrods, floating pins.
Darts with lots of porting/chamber work/angle milling 230cc intake runner
Isky solid roller 260/268 @050 .640 lift, 108lsa;similar to the 294r grind
Crower lifters, Jesel 1.6 rockers
Team G heavily ported, AED 850 carter 172 pump
Richard Childress accessory drive system
Still need to make a decent cold air system when Im up to it.
