451 motor
sorry havent been on much out of town working...but we plan to set them up at 2" installed..dont know the brand of top but they was use with a little more cam then this 1 like 731 lift ...i have that cam as well ..just gonna try this fisrt..the other is a lunati cam i have the specs but not with me...maybe will have this thing going by soon....just have to work on getting the body next....mike
let me hear more about that 500 lol
The 500 is a '71 cast 400 block bored to 4.375" with the 440 source 4.15" stroker kit and the flat top pistons. I have the BCR aluminum main caps and girdle kit to beef the bottom end. I used a custom comp solid roller cam ground with the HXL lobes. A mild 264/264 @ 0.050" duration, 112 LSA, 0.714" lift with 1.6:1 T&D rocker arms. Originally I was going to use a larger cam, but I wanted good piston to valve clearance, and the short block was already together so I did not want to have larger valve reliefs cut into the pistons. The heads are the Edelbrock Victor Max wedge heads with just a little port cleanup. I had to clearance the pushrod holes alot on these heads.
I originally setup mt valve springs for 2.00" install height using +0.100 retainers, and +0.050" locks, but the edge of the retainer was just touching the inside of the T&D rocker arms, so I used standard locks and a 1.950" install height. My first rocker setup used some shims between the rocker stands and the rocker shaft. This lasted about 50-street miles till I split a rocker stand in half. So, I had the rocker stands milled off and used the billit aluminum max wedge rocker stands. I had it setup to be slightly higher than the original setup so I could use lash caps and still have good geometry, but I had to get new longer pushrods. Because of the offset rocker arms, the intake pushrod length is 0.025" longer than the exhaust pushrod.
Anyhow, the compression worked out to 12.4:1.
I was planing to run this on E-85 with the Indy tunnel ram, but I don't have the $$$$ for that setup/conversion yet, so I decided to re-use my Holley 4150 HP 1,000 cfm carb with the Indy 400-2 intake.
The engine runs pretty good, and idles nice with the wide lsa cam, but power is pretty flat above 6,000 RPM when I chassis dynoed the car? A/F ratio looked good, so I'm not sure if it is the carb airflow (should have checked my vacuum gauge?) or maybe I need stiffer pushrods? Currently using the 0.083' wall 3/8" smith brothers pushrods?
At the track (Bandimere) I have only run 11.66 @ 119 MPH.
This is in my '71 Charger street car that weighs #4,100 lbs, and has a near stock suspension with large torsen bars, and sway bars, and the M/T street radials. I'm usually happy to have 60' times under 1.8.
I'm saving up for a strange S60 with the 4.10 spooled rear axle and new tires.