Horsepower
I don't know what they cost, but I'm pretty sure thats a $4000+ set of cylinder heads before MBE gets them.
I emailed MBE and found out what "expensive" is
"The GB2500 heads are $6,730 pr bare, ready to assemble. Assemblies with custom titanium valves, PSI 1249 springs (1.00 lift max), titanium locks, Ti-17 retainers (same material as nextel Cup & NHRA pro Stock uses) $9,450.
We would have to convert these for you. The cost of converting is about $400"
Dyno results
Just got the results from Karl on the dyno session at "A top secret location somewhere down South" on the King ERE 383. This motor has a very similar head/cam/valvetrain combo as yours silver95. This motor was King ERE #13 if your interested in the bottom end specs.
AI 215cc TF setup with the ProSeries SR valve train (Jesel)
Cam specs .668 on a 104 ICL
Stock intake w/ 1300cfm monoblade
Motor made 520hp at 7000 with 470ft/lb (not sure at what rpm as Karl was calling it in on his cellphone on the trip back)
This was a very conservative tune with the bottom end set up for a decent hit of nitrous. With a little better breathing manifold probably would have pushed the power numbers up a little.
AI 215cc TF setup with the ProSeries SR valve train (Jesel)
Cam specs .668 on a 104 ICL
Stock intake w/ 1300cfm monoblade
Motor made 520hp at 7000 with 470ft/lb (not sure at what rpm as Karl was calling it in on his cellphone on the trip back)
This was a very conservative tune with the bottom end set up for a decent hit of nitrous. With a little better breathing manifold probably would have pushed the power numbers up a little.
Last edited by interceptor; Feb 10, 2008 at 02:29 PM.
Here's a fully developed (by Reher-Morrison, no less) 412ci SBC drag race motor. It develops 675hp with a 14:1 CR. There are many significant differences between this and an LT1 and it is a race motor that needs high octane leaded race fuel. Just a little perspective.
http://www.rehermorrison.com/superSeries/412Start.htm
Rich
http://www.rehermorrison.com/superSeries/412Start.htm
Rich
^^ similar to what I built out of an LT1...but I have stock ported heads and Fuel injection.
IMHO it was a huge mistake and the engine is a POS......I will never mess with a small blcok again. Huge waste
IMHO it was a huge mistake and the engine is a POS......I will never mess with a small blcok again. Huge waste
I was looking for fwhp (flywheel horsepower) not rwhp. Anyways, I found out what injectors to go with and that was the whole reason for this post.
Last edited by silver95; Feb 10, 2008 at 10:18 PM.
Good luck with it...food for thought - an AI 355 with a small SR cam and their 200cc heads just put down 500rwhp through an M6. This car/engine combination is pretty close to the 600fwhp number you're after.



