Dyno today
Thread Starter
Drifting
Joined: Oct 2000
Posts: 1,526
Likes: 1
From: Harrison Township, Mi
Dyno today
Dropped the car off last night...Hoping to be over 300 RWHP.. It was 290 last year, I've since done some port work, added an H-pipe and upgraded to an MSD ignition.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Dyno today (randy72)
383, Lt1 intake and carb. ,Hyd. roller (509/528, 222/230), ported Lt1 heads, 10:1 compression, balanced, 2.5 " exhaust w/2.5" manifolds.
[Modified by Fevre, 2:15 PM 6/5/2003]
Melting Slicks
Joined: Jul 1999
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From: Godspeed Mikey Hogsmak Invitational Spring Skyline Drive Corvette Cruise
Cruise-In I Veteran
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Re: Dyno today (randy72)
:cool: Randy :cheers: I just finished my 383 3 weeks ago and had it dyno'd before putting it in the vette(in progress) and I got 473tq and 436hp at the crank. I dropped off the tranny yesterday to have it checked out. I shoud be ready to drive by next weekend. :chevy
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Thread Starter
Drifting
Joined: Oct 2000
Posts: 1,526
Likes: 1
From: Harrison Township, Mi
Re: Dyno today (Clink69)
It's a 72 Lt1 intake, not a late EFI Lt1. I have a problem, but don't know where. I was down 40 hp on the first pull (245hp) and was super rich. Jet change got it up to 275, but that's still 10 less than last year. I was hoping for 305-310. I think the valves are floating, will know more next week....
Thread Starter
Drifting
Joined: Oct 2000
Posts: 1,526
Likes: 1
From: Harrison Township, Mi
Re: Dyno today (randy72)
Fevre,
It's torquey. pretty lame below 2,000 RPM, but I've got a 4 speed and 3.70's so it doesn't spend much time down there.
:jester
Last year, it was 340 tq. @ 3500 peak. 300 min. from 2500-4900. It's down about 10 ft.lbs. across the board.
It's torquey. pretty lame below 2,000 RPM, but I've got a 4 speed and 3.70's so it doesn't spend much time down there.
:jester
Last year, it was 340 tq. @ 3500 peak. 300 min. from 2500-4900. It's down about 10 ft.lbs. across the board.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Dyno today (randy72)
Fevre,
It's torquey. pretty lame below 2,000 RPM, but I've got a 4 speed and 3.70's so it doesn't spend much time down there.
:jester
Last year, it was 340 tq. @ 3500 peak. 300 min. from 2500-4900. It's down about 10 ft.lbs. across the board.
It's torquey. pretty lame below 2,000 RPM, but I've got a 4 speed and 3.70's so it doesn't spend much time down there.
:jester
Last year, it was 340 tq. @ 3500 peak. 300 min. from 2500-4900. It's down about 10 ft.lbs. across the board.
Thread Starter
Drifting
Joined: Oct 2000
Posts: 1,526
Likes: 1
From: Harrison Township, Mi
Re: Dyno today (Fevre)
Timing and advance curve is fine....It's at 35 degrees all mech.. The vac. is plugged off( we had it at 38, but made more power where it's at).....Don't remember what RPM it's in by, but it's before 3000.
Have not done a compression and leakdown test yet...Motor is barely a year old, so I don't think it's an issue, but it will be checked along w/ the valve springs. It's done at 5,000 and the power dips right after peak then picks back up, that's why we're thinking valve springs. This cam should pull to at least 5500 in this engine. I'm peaking at 4800. :confused:
[Modified by randy72, 11:21 AM 6/6/2003]
Have not done a compression and leakdown test yet...Motor is barely a year old, so I don't think it's an issue, but it will be checked along w/ the valve springs. It's done at 5,000 and the power dips right after peak then picks back up, that's why we're thinking valve springs. This cam should pull to at least 5500 in this engine. I'm peaking at 4800. :confused:
[Modified by randy72, 11:21 AM 6/6/2003]