Cylinder head compatibility

[PlayingWithTBI]

I have angled plugs with headers on mine. It’s tight but, if you use that DEI high temp wrap and boots, they won’t melt the plug wires

 

[1991cheyenne]

The headers I have on my truck look like they would work with angled spark plugs.

I really don't have the money for a brand new set of cylinder heads right now. I'm hoping these marketplace heads will look good. If not I'll be pulling a set from the scrap yard.

Thanks

 

[SNCTMPL]

It's all good.

Well my engine plans are going to need a lot of work to run with tbi. I have a set of 180cc Flowtek aluminum cylinder heads, but I don't really want to put them on this engine.

Could you explain counter-bore?

The engine has good oil pressure, but smokes out the tail pipe on start-up and under load.

I'm hoping to drop the new engine in and then rebuild what's in my truck currently.

What’s the reason for not wanting to run the flowtek’s yet?

 

[rebelyell]

The headers I have on my truck look like they would work with angled spark plugs.

I really don't have the money for a brand new set of cylinder heads right now. I'm hoping these marketplace heads will look good. If not I'll be pulling a set from the scrap yard.

Thanks

Well, folks here also hope you have success with that

 

[1991cheyenne]

What’s the reason for not wanting to run the flowtek’s yet?

Tuning. I modded an ecm to be tune-able, but I'm having problems with the ecm after modding it and I haven't had time to work on it yet.
And I don't have the tbi adapter for the different intake manifold I'd need to run

 

[SNCTMPL]

I would use those heads and spend your resources on the ecm and tune. I can send you a tbi adapter or some wedge shaped washers and you can use your tbi intake. I feel like you’re throwing money away on used tbi heads.

 

[Scooterwrench]

I'll ask around. I know there are quite a few tbi trucks at one of the local pick and pulls, so I always have that option too.


That's a dangerous price..... Have you used these before?

I've got a set on my 355 now but I haven't put it on the road yet. I bought the bare heads and built them up myself with Manley valves and Z28 springs. Look up Eric Weingartner on youtube, he does a lot with these heads. I wish I had watched his vids before I bought those Manley valves. Also look up my ol Smoky thread and you'll see what I did with my set.

 

[Scooterwrench]

I feel like you’re throwing money away on used tbi heads.

X2
I went through that the first time I built my 355. I looked at 1/2 dozen sets of used heads that had problems running from cracked to beat up seats and worn out valve guides. I looked at two sets of rebuilt heads that were cracked and pinned.
A buddy fixed me up with the set of rebuilt 441's that I just tossed after putting 10,000 miles on them.
I have a set of 1.84 TBI heads that I just pulled off my 305 that look to be in decent shape, I haven't checked the guides. I know for sure they're not cracked, the engine ran good, bottom end was worn out.

 

[rebelyell]

Yeah, it's all good. it's good to see more members from the Pacific Northwest.


193's and I'm too tired right now to remember piston terminology so here's a pic

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Looks like that block's valley is completely ready for upgrade to roller cam & roller lifters.

 

[Scooterwrench]

I dunno because I have not had those fleabay aluminum heads in my hands --- but seems those have Angled Spark Plugs --- but their (Center-Two) intake manifold bolts are Not drilled-tapped at a (TBI about 72*) angle. That shouldn't stop a clever fellow from reworking his OE TBI intake manifold to fit (with a die grinder etc).

However, dunno how those Angled-Plug heads might work with OP's OE exhaust manifolds / aftermarket headers ?

>**< Also, the fleabay ad has "notes" --- there's a note indicating offset rocker arms are needed because of its Large runners.

Oops! I didn't read down to see that they were angle plug heads. The heads I bought are straight plug and don't use offset rockers. I also noticed the valve spring seat pressures, it sucks! You want a minimum 200lbs on the seat. The Z28 springs I'm running are 300lbs on the seat at 1.74 installed height.
I think I got it right this time;
https://www.ebay.com/itm/302573195504?_trkparms=amclksrc=ITM&aid=1110006&algo=HOMESPLICE.SIM&ao=1&asc=264183&meid=7198edcc22874e6dbce282ae6f38c123&pid=101875&rk=1&rkt=4&sd=351633229200&itm=302573195504&pmt=1&noa=0&pg=2332490&algv=SimVIDwebV3WithCPCExpansionEmbeddingSearchQuerySemanticBroadMatchSingularityRecall&_trksid=p2332490.c101875.m1851&itmprp=cksum:3025731955047198edcc22874e6dbce282ae6f38c123|enc:AQAJAAABUNthdh9o32sOfKme0krmx3yc5y0DRWWwwpiraCEsA5rOcanQjqu91drTeDElZLF31uaWQXaQ2pNTl5IMyA1OfooQwqEcJUvtG9LvKPKHgcRzphx12iPvBSva61o%2BMhuWLwK1CG4FfYkUItxWJPgskx3ehSM3nXklm87qpYFdSyPacdSXBUKCPqpQfJjYL9hOOou913mvk5hxKFJah5nzq%2B2fWYK9UQCF%2B6vYsv4wIM%2BgFcFVNve3eheswtEAH7F9fv%2Fh4vICrijUOPwZ3Qxc%2BjFl4WCK8SptAbN%2FkxTjcPCh30ACmOBMQseGZHMTpQrJGaBRywvHgV4YQHjC9QT2Sdy0iN%2FXHvzAYLJphlXGYS93lHHFVGTMhdarrshRSRFrElOA0h3HzGwy1ydyiy3P1q6xIUBnPtzt7PtAWH%2FjQMEkzm8P%2B5%2Fv2qWU%2Ff%2FTUdZECA%3D%3D|ampidL_CLK|clp:2332490&itmmeta=01JK9SSCRR971620T4A7NH438Q
These are a little more but they include the rocker studs and guide plates, I had to buy those separately.