How did this cam change do this much ?

Everett Vassar · 02-10-2010, 04:03 PM

Car did come from Ala to Tx--But first car that made that move ran the same in Tx as Ala
Everything else the same SBC 383, stock 400 heads, glide, 8" PTC conv, 4:30 gears Weight 3550lbs with driver ----original cam
Comp .501/.501 292 RPM range 2500-6500 60ft 1:70,s 1/8mi E.T 7:70,s MPH 85
New cam--Jegs .488/.510 292/302 RPM range 3000--65000 60ft 1:78,s 1/8 mi 8:01 MPH 85

Best time to date with new cam 7:91 in cool weather Jacking up at starting line to 3K needed extra foot on brake pedal. Obviously I guess I need to go back to the Comp and see if I get my .3 back--But what happened Lower cyl pressure? Need more converter? Better heads?--are Jegs cams junk?

02-10-2010, 04:03 PM	#1
Everett Vassar Member Join Date: Jun 2004 Location: Kennedale,Tx Posts: 227 Likes: 0 Liked 2 Times in 2 Posts	How did this cam change do this much ? Car did come from Ala to Tx--But first car that made that move ran the same in Tx as Ala Everything else the same SBC 383, stock 400 heads, glide, 8" PTC conv, 4:30 gears Weight 3550lbs with driver ----original cam Comp .501/.501 292 RPM range 2500-6500 60ft 1:70,s 1/8mi E.T 7:70,s MPH 85 New cam--Jegs .488/.510 292/302 RPM range 3000--65000 60ft 1:78,s 1/8 mi 8:01 MPH 85 Best time to date with new cam 7:91 in cool weather Jacking up at starting line to 3K needed extra foot on brake pedal. Obviously I guess I need to go back to the Comp and see if I get my .3 back--But what happened Lower cyl pressure? Need more converter? Better heads?--are Jegs cams junk?