Pump Gas 427 flow chart
Thread Starter
Racer
Joined: Jun 2001
Posts: 406
Likes: 7
From: Ellicott City Md
Pump Gas 427 flow chart
Better than expected flow numbers. Heads were built for a real street engine running 10.0 to 1 compression and a streetable cam. Amazing work from one of the best porters in the country. The flow chart was done in MD when the heads were returned to confirm the flow numbers.
The heads are a rare set of untouched (before I got them) PRO raised runner heads. One of, if not the best SBC heads ever made short of the Nascar stuff.
Drifting
Joined: Aug 2001
Posts: 1,500
Likes: 0
From: Holliston MA
Cruise-In VII Veteran
Without saving that photo and blowing it up I couldn't make out the numbers.
I take it the heads were flowed at 25" and then the numbers corrected to 28" ?
Pretty damn impressive all across the board. What are the spec's - valve sizes, minimum CSA, runner volume ?
I take it the heads were flowed at 25" and then the numbers corrected to 28" ?
Pretty damn impressive all across the board. What are the spec's - valve sizes, minimum CSA, runner volume ?
Le Mans Master
Joined: Jul 2000
Posts: 7,638
Likes: 326
From: Greenville SC
So you are going to have a blown ZL1 with 355cfm heads in your 90 C4? JHC! Think you'll have enough power?
Are you going to have a cam with .7 lift to get the max from the heads, because I thought you couldn't go with a real big cam on a blown car?
How much rwhp are you expecting?
Is the going to be a street car or a "Real Street" class drag car?
Are you going to have a cam with .7 lift to get the max from the heads, because I thought you couldn't go with a real big cam on a blown car?
How much rwhp are you expecting?
Is the going to be a street car or a "Real Street" class drag car?
Thread Starter
Racer
Joined: Jun 2001
Posts: 406
Likes: 7
From: Ellicott City Md
Originally Posted by 95wht6spd
So you are going to have a blown ZL1 with 355cfm heads in your 90 C4? JHC! Think you'll have enough power?
Are you going to have a cam with .7 lift to get the max from the heads, because I thought you couldn't go with a real big cam on a blown car?
How much rwhp are you expecting?
Is the going to be a street car or a "Real Street" class drag car?
Are you going to have a cam with .7 lift to get the max from the heads, because I thought you couldn't go with a real big cam on a blown car?
How much rwhp are you expecting?
Is the going to be a street car or a "Real Street" class drag car?
The cam has not been ordered so I don't know the specs. I would guess it will be in the mid to high 600 range based on the flow chart.
