Hi there folks LOL i have A 87yr. Camaro it has a 305 tpi (I think thats LB9 motor) I just recently bought A used 87 350 4bolt-main block. My budget is a little tight but im am willining to purchase the needed parts to make my conversion work!!. If theres any1 out there plz help me with my confusion, im using the same 305 heads for now,which is A stock set up.Can i use the same injectors (19lb) and the same ecm and prom.Will I be able to run this set up for now and have a drivable car Plz HELP Thakz P.S. I have A new knock sensor(for A 350) and a adjustable fuel pressure regulator

It probably will run with the 305 injectors, and eprom, but not well. The 305 heads are only 58cc, so your compression is gonna be high too.

Really, you should get some 22lb injectors, a 350 eprom, and some 350 heads before you do this build. Some junkyard l98 heads are probably your best bet if you are trying to keep costs down (they should have the same intake bolt pattern as your 305 heads too).

How bad shape is the 305 in? If it still runs strong, I would suggest saving and getting some nicer things to start with. (Better heads, 24lb injectors, eprom burning equipment... yada yada yada) But it really depends on what you want out of this build.

Thanks!!! My 305 pistons are sezied in the block.So the car wouldnt be able to run at all?,with the 305 top setup, Can it at least be drivale untile I upgrade the heads?.And can vortech heads fit on my block with out any machining? Thanks for your time all advice is good advice LOL

Just want to get it running for now,but i have intension on going all-out later on down the line.I do plan on running a twin turbo setup later on it( I know first my forged bottom end, Hi flow heads, and turbo cam in lifter setup,But I just want to pull the car out of the damn graveyard(87 T-top Camaro)but what are some pointers you have for an inspiring young Gear-Head, that wants to kill those pesky rice rockets
Thanks for your input

on my 92 ive got a built 355 but the valve seals went out so i put back on my 305 heads and it runs fine also i upgraded to a 350 computer but have a 305 hypertech chip on it and it does fine for now so you should have no problem for now it should be driveable jus fine it also ran fine with the 305 computer

I recently bought an 88 IROC in which the previous owner had started a swap from a 305 TPI to a 350. He told me that the block, heads, etc came from a 91 C1500 pickup. He ran out of time, money or know-how (probably all three!) and I got the car at a realy good price. I finished the install using the original induction setup, injectors, etc., from the trashed 305. I also used the original wiring harness and ECM and re-used mano of the original sensors. I'm still trying to get things dialed in correctly but overall the engine runs well. THe point of all this is that, at least for the short term, your project is feasible!! Good luck.

The 305's heads can be really great heads since they already have good flow numbers. So, unless you buy some new heads off of ebay that come in a kit with roller rockers and choice of either 1.5 or 1.6 ratio and strengthend rods.. for about $450+.. you should otherwise take those 305 heads to a local machine shop and have; a three angle cut and bowl job, ported, 2.02/160 size valves installed, new seals and springs. You'll have really good heads and you'll know that everything will bolt up. Getting new heads with larger valves will develop more power as a rule of thumb than stock 305's when you shop. Even if the flow numbers vary. I researched flow numbers on those heads and found what difference it was just with larger valves vs hp.

On the swap. Get a tuned 350 prom to work with your setup. 19lbs injectors will run just fine until you decide to upgrade. 24lbs injectors will require the prom to get modded further, otherwise if not expressed the prom will be tuned for a hot 350 running 22lbs since they are standard those years. You said you have the proper knock sensor for the swap... you also need to get a Electronic Spark Control module for a 350.

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