A98COUPE You have givin no info on what the car is going to do? How much power you are looking for? What the trans ratios are? Rearend Ratios? Are you building another coupe?
Here's a quick question list to fill in
Size of motor?? with bore and stroke, why there could be an issues with the 4.375 crank shaft not clearing a camshaft. Max Rpm range?
compression?
Heads and amount of work done to them?
Rearend ratio?
Transmission and first gear ratio?
Are you running and FI system or a carb, Rough size of carb looking at?
Type of manifold Single plane, dual plane, 1 carb, 2 carbs, Webers, ( these carbs need a whole different camshaft profile than a carb or fi setup)?
Are you looking to race this car? car shows? Cruising?
What exhaust are we looking at? Some side pipes may cost the power range from 20-50HP and about the same in torque?
Side note, I think either Jessel will bolt onto either Bt heads or Edelbrock.
If you can find a set of Ersons, buy them for stock heads. There are a couple of other Companies, Harland/Sharps have been around along time. You want the supports with end supports.
Camshafts, I have run Cranes for over 35 years in all my motors but hemis, Racer Brown for them.
Same for lifters of running Crane. Crane doesn't make their own. Have 7 years with hydro lifters and now 8 years with a small hydro roller of .600" lift. Cam shaft was degreed for torque and not HP because of autocrossing.
Not trying to be an a$$ but it's not that simple. If you where going with a larger camshaft and solid rollers would tell you to get .904 lifters installed in the block for better support and higher than normal valve spring pressures.
The other thing, run 80#
oil pressure with HVHP
oil pump and a accusump for startups and racing.
Quick spec on my motor, Shelby 4.250X4.250 bore and stroker
Shebly heads with a stage 2 Mike Lefevers port job
Crane cam hydro roller .587"-.607"
BBC beehive springs. They have a limit of 5,600-5,800 before valve float. PAC sell a high pressure spring in the 420's open pressure over the 370's of crane I have 12 years with these and have lost 8-10 pounds of seat pressure. You have to know limits on these parts
The rest is basic motor with 100# pound spring for pressure. I have had no failures of this block in 15 years at the started size of 452 and now the 482 setup with 10.2 compression.
Numbers for this motor are 620 ft of torque and 540 HP at the flywheel. It's a hand full at times. Idle is quiet and just a little lope. I don't let my motors idle for any time, per lube them before starting, and allow the motor to warm up before driving it for the first 2-3 minute at 1,200 rpm.
Good luck with your build. Rick L.
It's not that simple
Threaded Mode
