Originally Posted By skicker
My comparison in the LD versus the M-1 is that when initially built the M-1 was a dog in the 60 ft and pulled very hard in the higher rpms thru all gears.
Now with the LD it seems to 60' decent and leaves a lot harder but it is noticeably down on power in the higher RPM's.
I guess its not really fair to make that side by side comparison because when the intake was changed is when the cam was advanced from 112 to 103. shruggy
Ultimately between both intakes and the differences of where they run the ET between the two may be very close. 60 foot-1/8th and mph would likely be different.
I would like to see it hit the 11.90's but I'm optimistic... whistling
Temps are supposed to be in the 50's so I may get a little help... up

As for the cam I have owned it for more than 22 years and can verify that it was bought around 1978 by a previous owner of the engine that was in the car I bought in 1993. I hadn't used it since 94 and the previous owner hardly drove the car after 1986. From 78 to about 84 it did weekend street racing running a best of 11.9x with a 5.13 gear in a 73 Dart Sport in about 1983. When I talked to the previous owner he said it never ran good on top end...when I got it I thought it was lazy on top also. Installed the cam in this motor and it pulled hard on the top and was lazy down low... shruggy That's when the cam degree was checked and set at 103 per Jim. twocents


Any chance after all these years of having the cam card??

I'm curious because you said the cam was installed at 112 and now it's at 103. That seems like a big spread, unless it's has a 107-108 Lobe Seperation Angle. If it's ground on a 108 and was installed at 112 that is 48 of retard, plus the 2-4 degrees of retard you get from a timing chain. It's possible that thing was running at 114-116!!!! Holy Crap.

I only ask because in years of dealing with Jim, his standard is almost always installing the cam 2 degrees ahead of LSA. Not always, but mostly. Comp usually goes in 4 ahead, Cam Motion is usually 4 ahead and Mike Jones is usually 3-4 ahead. Kinda a rule of thumb thing for the cams I normally run. In fact, all my old UltraDyne stuff went in 6 degrees ahead. Just how Harold did it. I'm not sure how Bullet is doing it now. So when you go from 112 to 103 that is a HUGE move. That's why I asked if you knew what the LSA actually is.

I like crunching numbers when I can, and yours in particular are interesting. Hope you don't mind all the questions.

Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston