3.4 block, 3400 heads, carb conversion anyone? - S-10 Forum
 
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post #1 of 6 Old 01-07-2016, 11:45 PM Thread Starter
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Question 3.4 block, 3400 heads, carb conversion anyone?

So i have this 3.4 engine block from a 94 camaro, i just got the aluminum heads, lower and upper intake from am 01 grand am gt. My problem now is that i chose this conversion because its a direct bolt in replacement to the 2.8 thats in my truck. i overlooked the fact that the 3.4, 3100, and 3400 series motors were never given an aftermarket carbed intake manifold. i have heard a few guys being able to modify the stock 3100/3400 upper intakes to facilitate a carb, but they have only mentioned it and never posted any pictures of the procedure. if anyone has any knowledge of this procedure or have any ideas please let me know. i want o have my truck ready by summer.

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post #2 of 6 Old 01-08-2016, 02:49 AM
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Re: 3.4 block, 3400 heads, carb conversion anyone?

If I remember correctly the transverse heads won't work on the Longitudinal block

Why not just use the 3.4 heads?
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post #3 of 6 Old 01-08-2016, 02:51 AM
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Re: 3.4 block, 3400 heads, carb conversion anyone?

Just convert to EFI if you're going to use the gen3 top end. You will need to use some sort of controller for the DIS anyway, since the intake doesn't have enough space for a dizzy to be installed anyway.

Any carb that's been mounted on top of a gen3 intake has always seemed to work poorly from reports of the owners that have done it. That makes sense because the intake were never designed to flow fuel through them or provide a strong vacuum signal to a carb.

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post #4 of 6 Old 01-08-2016, 02:53 AM
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Re: 3.4 block, 3400 heads, carb conversion anyone?

Quote:
Originally Posted by sparkybuoy View Post
If I remember correctly the transverse heads won't work on the Longitudinal block

Why not just use the 3.4 heads?
The 3400 heads bolt onto a longitudinal block just fine.

Yukon: The daily driver
Tha toy: 1973 Datsun 240z 12.71 @115
Tha other Toy: 1923 T-Bucket
Another Toy: 1987 Buick Skyhawk
Typhony Old set-up: 1985 GMC Jimmy. 3.2L Turbocharged/Intercooled hybrid. 13.873 @ 99.08 Currently being reconstructed.


"If you're not living on the edge, You're taking up too much space."
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post #5 of 6 Old 01-08-2016, 03:04 AM
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Re: 3.4 block, 3400 heads, carb conversion anyone?

Now I remember...because the intake section of the head(s) is different the intake has to be bolted on with them
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post #6 of 6 Old 01-11-2016, 04:06 PM Thread Starter
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Re: 3.4 block, 3400 heads, carb conversion anyone?

I can see how the upper plenum would not be ideal for a carb flowing vertically into the intake. The biggest reason i wanted to carb this new motor was because i was hoping to keep as much wiring and computer controlled tech out of my truck. At the same time the 3400 heads are the best design for this project.
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