Hot Cam Dyno....
I didn't see you had heads too, but from years past, AFR heads on their own have resulted in sub par performance. Usually what people would do is buy the bare castings and have someone else port and assemble them, but again, this was a long time ago and not sure if it's the same today.
Thread Starter
11 Second Club
Joined: Jan 2010
Posts: 1,707
Likes: 13
From: New Orleans, LA
I didn't see you had heads too, but from years past, AFR heads on their own have resulted in sub par performance. Usually what people would do is buy the bare castings and have someone else port and assemble them, but again, this was a long time ago and not sure if it's the same today.
Last time on the dyno, I put down 379 RWHP with Hotcam and LE2 H/I. Longtubes w/ dual Random Tech cats, open cutout, VIG 3600, HD steel driveshaft, Moser 12-bolt, 28" radials.
The red line drop off at 6K RPM was valve float which is now no longer an issue. The most recent graph is in my sig and has the best curves since all the bugs have been worked out.
Staging Lane
Joined: Aug 2010
Posts: 49
Likes: 0
I had a local shop custom grind the cam for me. The cam, with the 1.6s, put me at .575/.581 lift.
The custom grind was the better fit. The old 180cc comp port AFRs I have flow 276@.600. The 503 wasen't making full use of the cylinder heads.
Your elims should be in the 260ish range. The place that flowed mine had a set of 180 elims with them couple years back and they flowed 266/205.
The custom grind was the better fit. The old 180cc comp port AFRs I have flow 276@.600. The 503 wasen't making full use of the cylinder heads.
Your elims should be in the 260ish range. The place that flowed mine had a set of 180 elims with them couple years back and they flowed 266/205.
TECH Fanatic
Joined: Jan 2004
Posts: 1,157
Likes: 1
From: Kingfisher Oklahoma
I'd really only care about what numbers it puts down at the track. The last time mine was on the dyno, it put down 322/324 or something like that. It was a dyno day with EFA around '00 or so, whenever Fireball blew up his intake. My Dad put down 37x with his car and the only difference was he had SLP mids and LT4 intake/heads, both having HOT cams. I ran 12.4 and he ran 12.2 at MIR.
Mine never dynoed "high" numbers but that really didn't bother me as much as what it ran on the street and track.
Mine never dynoed "high" numbers but that really didn't bother me as much as what it ran on the street and track.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I agree with others, I don't care what it does on the dyno only at the track. I've seen many guys stand around in the pits and brag about the numbers but when they hit the track it's a different story.
I didn't see anywhere that you had bigger injectors, were yours OK when on the dyno?
I didn't see anywhere that you had bigger injectors, were yours OK when on the dyno?
Thread Starter
11 Second Club
Joined: Jan 2010
Posts: 1,707
Likes: 13
From: New Orleans, LA
I agree with others, I don't care what it does on the dyno only at the track. I've seen many guys stand around in the pits and brag about the numbers but when they hit the track it's a different story.
I didn't see anywhere that you had bigger injectors, were yours OK when on the dyno?
I didn't see anywhere that you had bigger injectors, were yours OK when on the dyno?
