Linster

Open, Sorry about getting the name right. It was Precision Marine. He was very informative.

We talked a lot about heads. Both PRECISION & ASM have had poor results with Merlin heads. Both push the Dart Pro 1. Here's a interesting comments from both them. The Dart 308 Iron Eagle heads are the same casting in the runners as the Pro 1. PRECISION tells me they will make a little more power than the Pro 1 with the same engine setup. He said the heads hold the heat better and make a little more power. The problem is they are more prone to detonation after 9.25CR. You must use 92 octane if you go over that. Both like the Air Flow Research but agree they are better for larger engines and mechanical cams intended for max power.

Both PRECISION & ASM want to specify what cam to use so the ECU can control the engine. I have always found on cams, a little little is better than too big.

I still think the key is to increase the compression in these engines. 8.75 is very low. Most new GM engines with EFI control are much higher than 9.0CR. They allow the knock sensor's to work. At 8.75, a knock sensor will not come into play. I still think that the 142 degree thermostat will make more power than the 165 degree that Merc now puts in the engines, from the shear heat temperature generated in the engine compartment. With the 142 degree thermostat, I think the engine compartment runs 40-50 degrees cooler in the summer.

Thanks for the help finding PRECISION Marine. He sounds like he really cares about his customers.

CAP071

http://www.lingenfelter.com/home.asp

My motors would be in their hands no some fly by night wanna be speed shop.

CAP071

I could lighten my boat and gain 1-2 mph just take less women and less beer

Canada Jeff

Yup, I run with a buddy of mine that has the same boat, and same power (he's carb hp) . Its was worth it to be able to just get by him and shut him up. So yah, it was worth it. No internal work, all external, transom is nice and clean, and I did it all.

If I was keeping it, I'd whipple it, and leave the CR alone.

Don't rule out the whipple just yet, compare pricing before you go and pull the engine! The whipple can be installed without pulling the engine. And you can net 600 with 3 or 4 lbs boost.

Canada Jeff

Now who the hell is going to run a boat without women and beer? We not in a poker run all the time!

open87

iTrader: (2)

yup , and he does like the dart's. i myself have a set of canfields. he will take the time to speak with anyone. e

open87

iTrader: (2)

ouch

Joe

Innovation - Talk with Dennis. They do great work. - Remember, you get what you pay for!!!!!