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Re: Hemi99 question [Re: coletrickle] #1571730
02/02/14 01:08 PM
02/02/14 01:08 PM
Joined: Apr 2005
Posts: 1,106
Quebec, Canada
D
Diablo Offline
super stock
Diablo  Offline
super stock
D

Joined: Apr 2005
Posts: 1,106
Quebec, Canada
Quote:

Al,whats the problems associated with the 2 bolt heads and 5cam block(5cam bearings im guessing?),




It was mostly about the engine wanting to get up in the 10k rpm range and the rocker pedestals couldn't hold or they would start to twist. Same thing with the cam bearings to much pressure at that high of rpm. Supposedly the 3 bolt heads were good up to 10k and then they made the 5 bolts to start running past the 10k mark.

Re: Hemi99 question [Re: Diablo] #1571731
02/02/14 04:46 PM
02/02/14 04:46 PM
Joined: Jan 2008
Posts: 4,255
Canada
WO23Coronet Offline
master
WO23Coronet  Offline
master

Joined: Jan 2008
Posts: 4,255
Canada
Could the ports be epoxied down in size so it's not so RPM happy? I think the HEMI 99 heads flow 600-650 cfm? I know it would limit all out power but good power could be made with say ONLY 525 cfm ish I'm sure.

Re: Hemi99 question [Re: Diablo] #1571732
02/02/14 07:21 PM
02/02/14 07:21 PM
Joined: Dec 2009
Posts: 275
brisbane,australia
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coletrickle Offline OP
enthusiast
coletrickle  Offline OP
enthusiast
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Joined: Dec 2009
Posts: 275
brisbane,australia
Quote:

Quote:

Al,whats the problems associated with the 2 bolt heads and 5cam block(5cam bearings im guessing?),




It was mostly about the engine wanting to get up in the 10k rpm range and the rocker pedestals couldn't hold or they would start to twist. Same thing with the cam bearings to much pressure at that high of rpm. Supposedly the 3 bolt heads were good up to 10k and then they made the 5 bolts to start running past the 10k mark.



This is very good info,i'm not sure what hemi99 stuff ive got to work with yet till I get over there just tryig to do as much homework before i arive.My mate is very busy amd i don't want to constantly bug atm.To all the above posters your help and knowledge is greatly appreciated.Getting real exciited about this project thanks again guys!

Re: Hemi99 question [Re: coletrickle] #1571733
02/02/14 09:46 PM
02/02/14 09:46 PM
Joined: Oct 2005
Posts: 368
back home in georgia ,lake sid...
105630 Offline
enthusiast
105630  Offline
enthusiast

Joined: Oct 2005
Posts: 368
back home in georgia ,lake sid...
I was the guy on Racingjunk with the 99 hemi for sale ,wasn't hurting for money at all ,just don't have a use for it.I had lots of dreamer types and tire kickers every day thinking they could put it in a car and drive it every day and I just wasn't going to sell it to someone with no clue and have them bash my name and run me in the dirt over it.This engine has a purpose it was designed with,When I got it ,I bought it for the head technology .I want a 550-560 cubic motor with these heads for a blown application.The drawn back was the engine block weight not being aluminum cause alot of nose weight my car which must run stock firewall. Second drawback was having a one off engine with no not your every day spare parts. In the end I went with a Brad hemi cause of parts and weight. Do I believe this engine would be an animal ,no doubt just look at what Marty's smallblock version of a 99 has done with just one turbo and a short time at the track.I believe that if an affordable aluminum block was available and not have to buy a billet one off $11,000 block,I would have still built it.Since I was spending 11,000 it was going to be something ready available that I can pick up the phone and get in a short matter of time along with heads ,cams and such.

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