New "Base" Engine (for No Flight)
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
New "Base" Engine (for No Flight)
Looks like I just bought a new "base" engine for No Flight, a 408" 600HP motor. I'll need to swap out the cam and heads to tone it down a bit, but it should be a good base. Looks like I'll have a 350 "010" block to sell in a bit (and some ported iron Pro-Action heads too).
Wish me luck - Greg
Wish me luck - Greg
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
Re: New "Base" Engine (Gordonm)
Compression (12.8) and cam timing (272/282@.050 .675/.645 lift) is a little much for the street and 92 octane gas.
I'm planning to swap out the Pro Action heads for AFR 220 race ready 76cc chamber ones, which should drop the compression to 11 to 11.2 (depending on the exact deck height). I'm thinking a 250@.050 .600 or just under cam.
Anyone (gkull, Monty, others) want to play some cam recommendation games?? I usually model the 8-stack EFI as around a 2500-3000 cfm IR manifold.
-Greg
[Modified by GregP, 3:27 PM 9/24/2002]
I'm planning to swap out the Pro Action heads for AFR 220 race ready 76cc chamber ones, which should drop the compression to 11 to 11.2 (depending on the exact deck height). I'm thinking a 250@.050 .600 or just under cam.
Anyone (gkull, Monty, others) want to play some cam recommendation games?? I usually model the 8-stack EFI as around a 2500-3000 cfm IR manifold.
-Greg
[Modified by GregP, 3:27 PM 9/24/2002]
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: New "Base" Engine (GregP)
IMO - domed pistons and bigger chambers are not the way to go. But anyway are you looking for 600-625 hp on DD2000 or a comparable program all 92 octane compatable?
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
Re: New "Base" Engine (gkull)
I'm not a fan of big domes either. These are +3cc net, flat tops are -5cc due to the valve reliefs. I'm hoping that the small dome and bigger chamber (76cc) will unshroud the valves (2.08 intake) at little better than smaller (69cc) w/ flat tops, also gives me a point in compression (10.9 -vs 10.8) which isn't significant but is in the right direction. I could swap pistons if I had to, but don't think it's needed.
My original goal for an engine was anything over 500 HP. I'm thinking 550 HP is a nice attainable goal with 400+ ft-lbs from 2500 to 6500 RPM. If I go over 600 HP I'll probably need bigger injectors than I have being setup now (36#).
At present I like the Isky RR-570T and the Crane 118751 cams, but I've only played with a few.
-Greg
My original goal for an engine was anything over 500 HP. I'm thinking 550 HP is a nice attainable goal with 400+ ft-lbs from 2500 to 6500 RPM. If I go over 600 HP I'll probably need bigger injectors than I have being setup now (36#).
At present I like the Isky RR-570T and the Crane 118751 cams, but I've only played with a few.
-Greg
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: New "Base" Engine (GregP)
If you could get me the flow chart file for AFR220 I could get closer to real with DD2000. I used the specs on the race ready AFR210 with 2.08/1.6. I sent you the doc e-mail
Anyway it was 514 hp at 6000 and 534 lbs tq @4500 That's a stout solid Crane cam with 252/260 @ .050 .630/.630
Anyway it was 514 hp at 6000 and 534 lbs tq @4500 That's a stout solid Crane cam with 252/260 @ .050 .630/.630
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
Re: New "Base" Engine (gkull)
The AFR 220 flow data I have (from AFR) is:
Intake
Lift: .05 .1 .2 .3 .4 .5 .6 .65 .7
Flow: 32 66.4 135 202 255 282 284 285 294
Exhaust
Lift: .05 .1 .2 .3 .4 .5 .6 .65 .7
Flow: 24 55.7 112 145 185 203 215 218 220
I ran the combo from the AFR web site (406, AFR 210's) where they have dyno data of 570 HP and the program "only" came up at 550. Idon't know what I was missing since I didn't think it was usually conservative in it's predictions.
Surprisingly (to me at least) the Isky RR-570T cam does really well with on .570 lift, which I would think to be much more valve spring friendly.
Intake
Lift: .05 .1 .2 .3 .4 .5 .6 .65 .7
Flow: 32 66.4 135 202 255 282 284 285 294
Exhaust
Lift: .05 .1 .2 .3 .4 .5 .6 .65 .7
Flow: 24 55.7 112 145 185 203 215 218 220
I ran the combo from the AFR web site (406, AFR 210's) where they have dyno data of 570 HP and the program "only" came up at 550. Idon't know what I was missing since I didn't think it was usually conservative in it's predictions.
Surprisingly (to me at least) the Isky RR-570T cam does really well with on .570 lift, which I would think to be much more valve spring friendly.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: New "Base" Engine (GregP)
with those cfm numbers I got 524 hp@6000 and 536#@4500
It might be time to sell the wife and kids and buy the solid roller :yesnod:
It might be time to sell the wife and kids and buy the solid roller :yesnod:
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
Re: New "Base" Engine (gkull)
Since the motor has a brand new solid roller in it now it's really pretty much a given that I'll put another in, just cam cost as lifters (Crower), correct length pushrods, cam button and all is already there. Just need to decide which one to order :D
-Greg
-Greg
Drifting
Joined: May 2001
Posts: 1,329
Likes: 12
Re: New "Base" Engine (GregP)
Compression (12.8) and cam timing (272/282@.050 .675/.645 lift) is a little much for the street and 92 octane gas
WTF? Did I get this right? STREET? U going to use that car on the street? Isn't that big fat slicks I see under? :jester
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
Re: New "Base" Engine (Lohkay)
Yep, it's just a little ol street rod with a "Corvette style" fiberglass body on it :jester . I wouldn't be surprised to see it at the Mason Dixon NCRS all Corvette drags once in a while though :D .
Actually, the tires in the photos are Hoosier 15.50x29.5-15 RADIALS :yesnod:
-Greg
[Modified by GregP, 8:06 AM 9/26/2002]
Actually, the tires in the photos are Hoosier 15.50x29.5-15 RADIALS :yesnod:
-Greg
[Modified by GregP, 8:06 AM 9/26/2002]
Thread Starter
Drifting
Joined: Aug 2000
Posts: 1,805
Likes: 36
From: Annapolis MD
Re: New "Base" Engine (gkull)
with those cfm numbers I got 524 hp@6000 and 536#@4500
Thanks again, Greg
