I put my 383 stroker project on hold due to lack of funding. but i have a carbed 305 that i recently purchased for dirt cheap. the donor motor has a carb set up on it and it came out of an 86 monte carlo with an auto trans. will my tbi intake flywheel work with this? I have a 5-speed trans that i will be using. thanks

 

It should work, but you need to make sure the bolt pattern for the intakes are the same. I believe they changed it in 86 to the newer style, but i would double check and make sure. the flywheel will work if the rear seal style is the same. what year is your tbi motor?

 

the tbi motor is from 1992. the casting # on the carbed motor is 14088551.

 

It's the heads that matter, not so much the block. Good news is a '92 flywheel will mount to an '86 crank.

The '86 heads will have all of the intake mount bolts at 90 degrees, while the '92 intake will have the center two mount bolts on each side at 72 degrees. You will either need to modify those intake mount bolt holes so the bolts will fit into the '86 heads, or get an '86-earlier intake manifold and put a TBI adapter on it.

 

I knew it was something like that, haha. thanks for coming to the rescue 5/7.

 

thats awesome. i have no problem using an adapter if needed. i will try to swap the intakes to see if they'll work. if not, its no big deal. i can always pick up an adapter at work. Its been over 3 years since ive drivin this car. i cant wait to get it going again :-D:-D

 

Ill be using this intake with this adapter with ZZ4 heads when the time comes on to my TBI.

The adapter I posted moves the TBI rearward closer to the rear runners, the reason I am doing this is because I have an offset intake filter base, which offsets the filter 1 1/2" forward towards the front of the car. So this should essentially settle me back in the middle, with the filter anyways. Ill be using a spacer as well.

 

sounds like a plan. i have an edelbrock RPM airgap manifold part #75013. if that'll work on the 86 engine, i'll toss that on there with the adapter. is there any drawbacks using the air gap manifold with the tbi system???

 

Yes, the fuel can puddle due to the colder intake runners. Its kind of like you want to keep the gas right below fume temperature if that makes since, to get the best fuel combustion, at least for these TBI's anyway.

 

That's not the right intake for either ZZ4 or '86 heads.

The 7501 is right for '86 heads, but not sure if it's a good choice for a mild TBI application, for more than just the fuel pooling reasons.

 

@ five7kid: Then please fix this thread.
https://www.thirdgen.org/forums/tbi/...tbi-heads.html

Which states ZZ4's are basically L98 heads. Will need an 86 manifold due to the different angle of the bolt holes (The 3706). I wont be doing EGR so no need to find out how on the ZZ4's, I wont have a passenger side accessory bracket (having custom idler installed) so no need to drill into the intake.

Please explain the wrong information in that thread, or lacking information, in which my questions were never answered and have been going around with this information in my head for some time.

 

They said "Vette L98 heads". '86-1/2 to '91 Vette L98's had aluminum heads, basically the same as ZZ4 heads. All Vette L98 heads had all 90-degree intake mount bolts. F-body L98's all had cast iron heads with the '87-up intake bolt pattern (center two on each side at 72 degrees). The bolt angle didn't change in '86, it changed in '87.

RBob explained the intake mount bolt issue in post #12.

Oh, I have a ZZ4 intake on the 350 in Berlinetta #1.

 

So instead of responding with that can I get an answer to my questions straight up. This is why newbies post new threads instead of searching. Its easier to get an answer straight for one person for their thread only than the millions of different people, cars, setups, builds, scenario's, threads on here.

So Ill re-ask my question in this thread (Waste of a post). Post#8 (You must have missed it) in that TBI Heads thread. Which is still yet to be answered by anyone, still.

I want NEW aluminum heads for my 305, no excuses, nothing used. If not possible one bit then I'll consider used aluminum heads.
I am keeping my 305 forever, no swaps.
I do not care about smog, I do not care about accessory brackets being there. I want aluminum heads to work with my center-bolt valve covers, my 2055 headers and the 3706 intake manifold or equivalent.

 

Except for the intake, the 113's meet all your criteria.

These meet all your criteria:
http://www.summitracing.com/parts/TFS-30300006/

 

I spend next to zero time on the TBI forum, usually when checking something to answer a member's question on this or other forums I frequent. FWIW, that thread, to me, had the answers to your questions, just, apparently, not in one place as you would like.

But, hopefully you now have the answer to all your questions.

Sean, sorry for the highjack of your thread.

 

Ok i finally got the car running with the new engine installed. only took a day of work to get everything going. The only problem i'm having is that the cooling fan is not turning on. everything is hooked up except for a one wire sensor that was located on the passenger side cylinder head of the old engine. The engine that i installed does not have this. My temperature gauge is not working also. Im not sure if the temp sensor is bad because the gauge was not working on the old motor either but the fan still turned on. Any ideas what could be wrong???

 

okay i found that the sensor that is not on the new engine is what is causing the fan to not turn on. its the fan switch. does anyone know how i can get this sensor mounted somewhere else on the engine???