[mysticmissle]

what were the original design/build specifications for horsepower? if turbo headers were commissioned obviously the NA hp was just the tip of the iceberg as far as power potential? No doubt the prior reputations of all parties involved was stellar, now it appears there is a lot of mud in the waters. this was/is a high end, money is no object build. If Ed was told he needed a titanium balancer bolt, from tony, lynn or anyone else consulted in this build he would have bought it. If the engine 'builder'(s) missed their price point at quote time its on them. the customer should get what he paid for. Ed should/could have an 1100 hp NA street motor at this price level.

[RAIV-Z]

Originally Posted by mysticmissle

what were the original design/build specifications for horsepower? if turbo headers were commissioned obviously the NA hp was just the tip of the iceberg as far as power potential? No doubt the prior reputations of all parties involved was stellar, now it appears there is a lot of mud in the waters. this was/is a high end, money is no object build. If Ed was told he needed a titanium balancer bolt, from tony, lynn or anyone else consulted in this build he would have bought it. If the engine 'builder'(s) missed their price point at quote time its on them. the customer should get what he paid for. Ed should/could have an 1100 hp NA street motor at this price level.

1600HP Pump Gas... NA expectations were north of 750HP. NA Dyno results 660.

[pastry_chef]

Originally Posted by RAIV-Z

1600HP Pump Gas... NA expectations were north of 750HP. NA Dyno results 660.

Your statement about expectations is right on. (In fact it says "way more" down here.)

Originally Posted by NHRASuperStock455SD

This is a street engine with street valve train. It is designed to make 2200HP of a base engine that produces 751HP normally aspirated I fully expect to make way more horsepower base which should translate into an easier target with boost and a better number with pump gas. If we make the engine very efficient, then the higher numbers with pump gas can be achieved.

http://forums.maxperformanceinc.com/....php?p=4455984


A Pipemax evaluation for your 535 cubic inch engine using 9.1 compression ratio and 5800 RPM for peak power says average 660 Horsepower would be flowing between 310 CFM and 330 CFM through the intake tract related to normal flow bench test.

I think you previously mentioned your ported heads peaked at 388 flowbench CFM or so. I would be VERY curious to see what your intake and head would flow test peak when bolted together..(loss should not be too severe)

You payed good money for porting of both cylinder heads and intake.

Originally Posted by RAIV-Z

~13K, Yes, I was very surprised as well.

I have asked both Lynn and Tony for detailed invoices. Tony said I was not his customer and I should talk to Lynn. I asked Lynn for them long ago, havent seen them yet.

Below is some of the information I received from Lynn. There were specific $ charges for each line item. You’ll note that some of individual line items are also duplicated under item 16. Item 15 was also charged at the wrong hourly rate. This engine build was started before BES increased their hourly rates in August 2011 “from $65 to $74”. I was told the $65 rate would be honored. Not sure why line item 15 was charged at $79 per hour, this was work that was done well before August 2011.

1. CNC RA-V Head Porting
2. Intake Porting

Now for a little word on engine "piston demand". Ideally for good efficiency and power at RPM you hope to have an intake tract that does a good job at keeping up with the engine flow (CFM) demand at given RPM.
By far most applications do fall short of keeping up, but maybe aim to be within 95 percent, and certainly within 90 percent of demand.

I've attached an image below with estimated peak piston demand as it would translate on a flowbench vs RPMs.
You can see a naturally aspirated engine with 535 cubes displacement gets very hungry with flow demand (CFM) very quickly as RPMs increase.

[pastry_chef]

One more addition to my post above.

The 515 Big Chevy posted here:

http://forums.maxperformanceinc.com/....php?p=4704122

makes 2000 Horsepower race tune, 1000 Horsepower street de-tune.

I see a few parallels beginning with engine size and power goal to Ed's.

The Cam in the Chevy was
252 intake dur @ .50
256 exhaust dur @ .050

.715 lift with 115 LSA

The Cylinder Head was Brodix Big Duke PB1802 - intake port 456cc
flowbench numbers attached image