[psguardian]

Does anyone with these heads have the factory shop manual for it? That should have some if not all of this info.

~psguardian

 

[psguardian]

BUMP for the Weekend Crew

Someone has to have some specs on these heads, please?
I have a used motors graveyard type warehouse (they pull apart & inspect everything then shelf it) locally that I can go pick through. but I need to know what the Pros/Cons are to these heads before I go that route.

~psguardian

 

[psguardian]

Almost 200 reads & no input? c'mon 2.3L head owners represent ! lol please

~psguardian

 

[psguardian]

I had these same thoughts, however I have some questions/reservations about them also lol. I also want to gather this info up because it would seem to make sense to have it all in 1 place since the engines are all basically the same soup stock, just different spices added to create diff dishes.

And Thank You for putting in your $0.02 worth (was starting to think I was the only one who had any input on the topic)

If you don't need the air pump connections you could use the later model small chamber E1 head on an older style flat piston short block.....

It was 93 that they changed the Combustion Chamber on the E1 right? so 88-92 = hemispherical / 93+ = kidney?
A.I.R. holes will be blocked if they are present, I'm getting a modern CAT. Will it will pass emissions with no pump + high new design CAT or do I need to get one specifically marked 'high-flow' ?

.....That setup will give about the same compression boost as a D1 head on the same short block. The best D1 head would be the EFI Impulse with the E1 valves.

Was that EFI D1 a turbo? I ask because I don't want to run a turbo CAM on a naturally aspirated engine. I'm told having NO int/exh overlap on the valve train is not good for N/A engines. (mind you I would LOVE to turbo this baby but that will have to be a later mod, I need her driving SOON)

~psguardian

 

[psguardian]

....I have the 2.3 head from a carb. pickup.....The camshaft specs I have show the cams in the pickups to be the same 2.3 or 2.6. As far as cams go though, just call Delta and get a cam, they are really cheap and work very good.

This is exactly the kind of info I'm looking for! So you have specs that show same cam in 2.3L & 2.6L that's good. So the only thing to watch out for is the Turbo model, anyone got specs on that cam?

~psguardian

 

[psguardian]

'88 & '89 non-turbo Impulse's ran a EFI (no fuel pump boss) 4ZD1 2.3L with the large valves and a slightly hotter cam.....

Was that 'slightly hotter cam' aimed at higher RPMs by chance (seems as it would be since it was a sporty rig)?

Clearwater can provide these heads except for the hotter cam if you specifically ask for them. The turbo Impulse's were 4ZC1 2.0L engines, don't know any particulars on the heads.

Clearwater has them all listed with the same part # on their website & noone I can get on the phone or by email is willing to clear it up for me. Seems as though they are putting out ONE head for 3 or more 4Zxx applications. as for the C1 if thats the only turbo then that is the cam I am trying to avoid, the head would fit though since its in the same family (I have a good 2.6L cam so rebuilding a C1 would be an option for me).

~psguardian