Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - BBC 049 Heads on 489-496 BBC with ISKY238/248 upper HYD roller cam kit
View Single Post
  #2 (permalink)  
Old 11-14-2011, 06:03 AM
BOBCRMAN@aol.com's Avatar
BOBCRMAN@aol.com BOBCRMAN@aol.com is offline
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 7,951
Wiki Edits: 0

Thanks: 13
Thanked 218 Times in 207 Posts
Easiest to get +.100" 3/8 stem Manley 2.19 intake valves. Stock length exhaust valve.. The exhaust side will need a rotator eliminater. I use a large 5/8" ID - thick, flat washer ( TSC gold color) and a .060" spring seat. This will give you a correct spring height to build from.

Correct way to do 2.19/1.88" Is with a Serdi type cutter. This will blend the correct angles into the chamber. A 70+ degree "Bowl Hog" will open up the bowl below the seat.

Cut heads .020". Use a short dome (.200-.250") piston Probe has an inexpensive set that works great.

Check the prices. I love to do these but, in this area the total cost, including cores, is more than a set of new aftermkt aluminum oval ports. (Ebay around $750-$800.00)
Reply With Quote