ok Stock head question
Thread Starter
Tire Smoking Tranny Blowing Director
iTrader: (2)
Joined: Nov 2001
Posts: 2,130
Likes: 1
From: Barto PA
ok Stock head question Ok first off I like to tell you the problem Im having. My hp and torque meet at 5250. Then the HP flatline and torque drops. Now I was at a meet last weekend and a guy I know said elmer from ls1 had the same problem till he changed heads. So Im wondering does this make sence? Im making 430rwhp at 5250 threw a th400 and moser 12bolt. Now im starting to think it might not be a program problem.
Re: ok Stock head question all dyno graphs will meet at 5252
HP = (torque *RPM)/5252
If this helps explain why your HP stops increasing, If the torque is not increasing or staying the same, the HP will not continue to rise.
Ryan.
HP = (torque *RPM)/5252
If this helps explain why your HP stops increasing, If the torque is not increasing or staying the same, the HP will not continue to rise.
Ryan.
Re: ok Stock head question Are you looking at the dyno sheet from the one in Mechanicsburg? If so sometimes they dont strech there graph to where it should be. i know that my first one there it crossed at like 5000 RPM but when i went up he did soemthing to make it right. just the way his works i guess. so most likely yours is crossing at the right spot.
JR
JR
Thread Starter
Tire Smoking Tranny Blowing Director
iTrader: (2)
Joined: Nov 2001
Posts: 2,130
Likes: 1
From: Barto PA
Re: ok Stock head question Ya it crosses right. What im trying to say is it not gaining hp after that spot. It just happens to be at the 5250 mark. YOu know how after you get to your peak hp it like flatlines. Thats what mine is doing at 5200 or so rpms.
Trending Topics
TECH Resident
Joined: Apr 2003
Posts: 859
Likes: 0
From: here, ny
Re: ok Stock head question ok then, what size cam r u running? if ur running the stock cam yet, then u won't be making power over that rpm, thats about where it peaks... u need a bigger cam to move the power band up, or ported heads... or maybe even ur exhaust is too restrictive, or the turbo's r too small and at their max, or ur injectors r at their max... i'd say something is wrong, i just looked up an old gmhtp mag, where rob raymer 1st did his turbo, and he made almost 500hp from a stock motored single turbo at 7.5lbs of boost...
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
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!
