ZRATED

I was looking at the summit catalog and I came across the LT1 intake manifold for carbs and i was wondering if I could swap in the lt1 long block and use the TBI setup that I have right now. I know that the motor mounts and the headers will bolt up but will I need to use the Lt1 acss. brackets cuase of the cam driven water pump and all that LT1 jazz I wanna keep my AC and make the swap on a budget. There is plenty of LT1 long blocks around here very cheap and i was just thinking of what a pretty cool swap that would be using TBI

MrDude_1

uuuuuuuuhhhh why?

and umm, sure it would be orignal, but cool... umm not im my opinion... and once more WHY put TBI on it?

25THRSS

I think it would be pretty damn cool. Might just be the first to do it, who knows. Go for it!

bigREd car

why not.. the demand for lt1 engine's was so low since carb guys couldnt use them.. the heads were useless unless you had a lt1 intake.. now you can pick up those blocks cheap put the carb intake and go.. why not? even if he goes carb... i just hope you can rip off opti spark.. headache and a half..
Shawn

*can a tbi really get a good lt1 or even lt4 to breathe te amount it needs? from a fellow tbi owner...

MrDude_1

stock one? no
ultimate TBI stock one? no
stock 454 one? no
ultimate TBI 454 one? no
aftermarket one? closer...... but still more of a restriction then a stock LT1 manifold.



so basicly..... you are losing power over stock.

bigREd car

so you would have to ditch the tbi for a carb or keep the lt1 intake.. those lt1 intakes look crazy you wouldnt have a water inlet on the front of your intake...
Shawn

25THRSS

You wouldn't have to ditch anything. A 670 tbi would be a nice combo for that engine and something different and pretty cool I think. He wants to know if he can put it on a tbi and the answer is yes. I believe that you must use the LT1 accessories though. By the way, any times yet for that engine? I havent heard anything since you did all the new mods.

ZRATED

I just finshed intsalling my SLP 2400 stall last week and Im just waiting for my torque arm to come in and hopfully ill make it out to the track for sum new times.

My friend is selling me a 80K complete lt1 block with the water pump only an without the acss. brackets for 600$

Would it be basicly a 350 swap(change knock sensor,and module) with some good chip tunning with the holley injectors?


What else would be a problem besides converting the acss. brackets?

bigREd car

how much hp can a 670 tbi support and how much hp does a stock lt1 block come with? maybe it could support it but you better start investing in some chip tuning and be prepared to do it on your own no one wants to help someone using tbi(except this board).
not flaming just speaking reality..

Shawn

HIBERNIS

93-95 LT1s make 275HP and 310lbft of torque. A stock 94 in good condition runs high 13s, like 13.8-13.9, automatic. Manuals, depending, driver skill run 13.6-13.7, and Ive seen bone stock manuals at the track, running 13.5s at 90* weather!

25THRSS

bull****, ive got a 94 6 speed and these cars ARE NOT capable of mid 13's stock, very high 13's at best, with most of them being in the low 14's.

dimented24x7

iTrader: (2)

if you can get it for cheap then go for it. Itll still be gagged with the two barrel tbi on it though. You dont here too many carb guys praising two barrel carbs, or two barrel anything for its performance potential.

25THRSS

Several guys have run the 350 HO motor from GM on here with the 2 barrel tbi and had success. I believe JPrevost is running 13's with his. A stock LT1 won't even match the performance of that engine so it can definitely be done.

bigREd car

doing chip burning onyour own sucks,who wants to tune my tbi?? seriously... if someone was going to burn me a chip then i might keep the tbi on it..

doesnt a 2 barrel tbi flow pretty good numbers even for being a 2 barrell??
by the way jprevost had to learn to burn chips to run his engine.. something i dont have patience to learn.. more power to those that have..
Shawn

dimented24x7

iTrader: (2)

the stock tbi flows around 500 cfm or so in 4 bbl terms. Ok, but not the first choice for performance oriented setups. You can certanly make power with it, but more can be made with other induction systems. You do get the advantage of good fuel economy and near trouble free use but it comes at a cost to performance.

bigREd car

so how would a tbi computer react if you bought a intake that doesnt have egr ports?? can we just leave it off??
Shawn

dimented24x7

iTrader: (2)

other then an intermittent code 32 + SES light at highway speeds itll be fine.