Porting Crossfire intake, first attempt, please critique
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
Where can I find the long cutting bits. I will search, but if someone has a source I'd gladly accept the assistance.
I got some bad news today, I was going to take the ol' '84 and put her on a dyno before I did my winter mods but when I called the shop they informed me that they sold their dyno! oh man I'm bummed, I really wanted to have some empirical data on what kind of performance increase I'll see. I'm not giving up I guess I'll have to take a road trip to find a shop, oh well gotta do it because I know my SOTP dyno has never been calibrated
Again, thanks for the help, very much appreciated!
I got some bad news today, I was going to take the ol' '84 and put her on a dyno before I did my winter mods but when I called the shop they informed me that they sold their dyno! oh man I'm bummed, I really wanted to have some empirical data on what kind of performance increase I'll see. I'm not giving up I guess I'll have to take a road trip to find a shop, oh well gotta do it because I know my SOTP dyno has never been calibrated
Again, thanks for the help, very much appreciated!
How many cfi owners swithed to the 85 fuel pump?
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Do you know what the differences were between the two? IOW, do you know WHY the Carb'ed Z28 would "haul ***"? Of course, Sheman, you never DID take it to the track dyno it or measure the power of either car (or any car you've owned) so you really don't know WTF you're talking about, do you? What did you just say about "B.S."?
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
Melting Slicks
Joined: Mar 2004
Posts: 2,141
Likes: 2
From: Pittsburgh Pa
Keep your personal feelings out of the OP's thread and save it for the track, I'm gunning for you at the track, when you line up next to a C4 don't look over it will be me. I don't want to intimadate you to much just concentrate on the tree, you will see my tail lights soon enough. Coming to a track near you.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
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Melting Slicks
Joined: Mar 2004
Posts: 2,141
Likes: 2
From: Pittsburgh Pa
your sig says you have a carb on your 84 so i am going to assume that you have no results with the crossfire and those heads.. and btw you say the exhaust valve is a 1.95 in your post and a 1.84 in your profile.. neither of which a small block exhaust valve.
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,187
Likes: 1
From: Superior WI
Instructor
Joined: Jan 2006
Posts: 160
Likes: 1
From: Fl
I cannot believe all the immature douche bags on here ******* this guy's hard work. Probably just jealous because they are lacking the skills to do it themselves. I hate it when people knock on the noncookie cutter builds. Anyone can buy parts and put them on. Nothing to it. I think it would be fun to have a 84 to play with. OP, don't let these... opinionated... d bags keep you from posting more and sharing the results, i am enjoying seeing/reading your doings and all the other great info everyone has posted. 
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
I cannot believe all the immature douche bags on here ******* this guy's hard work. Probably just jealous because they are lacking the skills to do it themselves. I hate it when people knock on the noncookie cutter builds. Anyone can buy parts and put them on. Nothing to it. I think it would be fun to have a 84 to play with. OP, don't let these... opinionated... d bags keep you from posting more and sharing the results, i am enjoying seeing/reading your doings and all the other great info everyone has posted.
I can't wait to see his before and after dyno runs. This is better than a slanted magazine article. I like seeing the porting work in stages.
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
To the OP, do you plan on shortening the runners or leave them the stock length. Has anybody that has ported their cfi intake did you shorten your runners and if you did shorten them did you lose any low end? What else should the OP do to gain more?
Keep grinding OP
Keep grinding OP
Thread Starter
Burning Brakes
Joined: Jan 2008
Posts: 1,187
Likes: 1
From: Superior WI
I'm thinking I will stay with the stock runner length on the intake, and I'm really debating whether or not to put the heads on before doing the intake mod dyno. I really want to see what the port job will do in and of itself. We'll have to see how far I have to go to get on a dyno and if I want to make multiple trips there.
Thanks for the support, think I'll go grind a bit...
Pro
Joined: Apr 2008
Posts: 694
Likes: 1
From: Spokane WA
I've never ported heads before and I got these babys for a cool $213 on ebay. I have read and will continue to research the process. I have to have something to do during the long Wisconsin winter. Heck I went through the trouble of insulating and heating the shop, might as well get some quality use out of it.
I'm thinking I will stay with the stock runner length on the intake, and I'm really debating whether or not to put the heads on before doing the intake mod dyno. I really want to see what the port job will do in and of itself. We'll have to see how far I have to go to get on a dyno and if I want to make multiple trips there.
Thanks for the support, think I'll go grind a bit...
I'm thinking I will stay with the stock runner length on the intake, and I'm really debating whether or not to put the heads on before doing the intake mod dyno. I really want to see what the port job will do in and of itself. We'll have to see how far I have to go to get on a dyno and if I want to make multiple trips there.
Thanks for the support, think I'll go grind a bit...
Don't forget to take your camera while porting. If you want to save on heating your garage you can do some porting on the kitchen table.
Instructor
Joined: Jan 2006
Posts: 160
Likes: 1
From: Fl
To the OP, do you plan on shortening the runners or leave them the stock length. Has anybody that has ported their cfi intake did you shorten your runners and if you did shorten them did you lose any low end? What else should the OP do to gain more?
Keep grinding OP
Keep grinding OP