i think john has gone off the deep end..... why dont u break the bolt on record first mr. day dreamer! haha im j/p if u do deciede to go for it... GET IT DONE! if u start it finish it... because honestly u would have the most badass LT1 in the world if u finish it.

 

yeah off the deep end is kinda what my wife thinks right now too when I told her about it. I told her what it would cost and she didn't like the thought of it, instant NO. I believe her exact words were "I don't care if it could walk on water for that much no fu*king way" so it may take some time to convince her, and while I am convincing that bolt-on record is going down...

But the whole reason for looking into the motor is that I plan on doing heads and cam after breaking the record, and since I mainly use the car for racing I was probably going to wild on the cam, so that means I need to address the bottom end a little, so I would at least need to pull it apart to have work do upgrading the rod bolts, but if I had it apart why not bump the compression, and so on and so on. Now I am thinking just pick up a block and build a killer motor slowly while I am still racing mine, and maybe even switch out the heads and cam to a milder cam while building up the other motor, that is what prompted this thread. More of a question of what to put into this motor that I want to build, and take everyones thoughts and try and make it come to life...

But from my Marie's response tonight I think it is going the slow route (like everything else with this car, that is why it is 1SlowFormula) and not getting anything outright like Fran's motor. By a block one month, a crank the next, and so on until I have a pile of stuff then send it to the machine shop, then spend the money on a good set of heads, and I might have something that can do it but would end up spend twice as much and a whole lot of time doing it...

 

yea i plan on doing that also... build up a motor slowly... buy a block etc etc etc but i dont kno **** about bottom ends and assembling a motor... but im gonna learn

i want to put a mild cammed ls1 into a clean 1987 porsche 944 and use it as my summer DD then build a nasty solid roller motor for the camaro and keep it track only... but thats long-term plans...

 

ya but i doubt you can stick radials on your car and go 9.1 @ over 140
but it could of been done a lot easier and cheaper is basicaly what im getting at

 

OK, guys bringing this back from the dead, I am heading out in about an hour to get a block from a local guy on the board here, and I am thinking of going with the 370" motor, but I guess that will be determined when I actually buy the crank, LOL...


Any suggestions on making the most N/A HP out of this? Any parts suggestions and etc?
The thought right now is:
3.625 stroke crank
6.25 rods (nice long rods for a good ratio and allow it to spin higher more safely)
custom pistons (thinking at least 14:1 CR) w/ small ring pack
Jesel belt drive w/ front mount dizzy
crank trigger running my current MSD digital 6
Heads are still up in the air, but I am hoping I can get something that moves over 335 cfm
Cam - not fully spec'd out yet, but I am thinking at least an SR with more than .730-.750 lift, but still not fully sure
Jesel shaft rockers will be used no matter what heads I choose
some sort of vacuum pump system, not sure which yet

I am hoping to do this kinda slowly and have it up in a year or so, any suggestions at this stage would the great, kinda like making it a community build/project...

 

I will be honest, I did not read the whole thread.

I will get bashed for saying this but sounds like you need to copy Rick Abare's car. Pump gas NA 383 with 23degree trickflows running mid 9s with bolton suspension at low 140smph.

Look over the details and see how it fits.

Lots of guys are going to tell you what they think you need, Rick's car is a PROVEN recipe.
Sounds like you could lighten more and get away with race gas.

 

I would suggest buying the lightest best quality crank, rods, valves, retainers, and pistons that you can find.

You also need to look at the drivetrain. Again the lighter parts will be faster (and more expensive).

I would run a carb over fuel injection.

It really shouldn't be that hard to run those numbers in a good car if you are willing to spend the money.

 

Any links to details of Rick's build/setup?

I emailed with Phil/Ron @ AI about a combination for this and they said it was doable for a 23* head that is on the list of what I needed to start with, but they also said I was going to be at a disadvantage if I was going to stick with the LT1...

After that I was a little set back in trying with the LT1, but over the past few months I had an internal struggle and finally said "F^&k it, lets just try".

Also, if I go with the carb'd setup there would be less in the engine management side, and I think I can get it done for less than that all together, but we'll see. The heads are going to be the most expensive part because another head guy quoted me 4K + the core purchase in just the porting/cutting/welding and etc. so all said and done no matter who I go with they are close to the same price for the top end 8-10K, but I think I can get a good bottom end, that can handle that power, together for around 6-7K too so that should bring the overall costs down. It looks like this is going to start getting expensive, LOL...

 

waste of time and money imo

 

Why?

There are several mid nine second Super Stock cars running the LT1 with stock head castings that are limited to stock port volume. I would think that aftermarket large port heads would be worth a few HP? The biggest thing holding the LT1 back around here is the limits that so many posters promote.

 

Agreed. It won't be easy and it sure won't be cheap, but I would say its definitely possible.

 

When talking to AI you have to understand they sell results, they are going to give you an HONEST number and deliver an HONEST result. It won't be the typical over promise under deliver and then try and correct things $$$$$$$$ after the fact. It will be done right the first time.

How many times have we seen guys "save" $200 and inside a few thousand miles are chasing valvetrain issues and such? That does not happen when you buy good parts the FIRST time.

Notice too it said "with management". No bait and switch, not going to be "well you also need______________________"

 

What exactly is the factor that will make the LT1 100HP less than a similar lsx based engine?

 

the fact that this build is with 23degree heads.

 

Oh yeah, I completely understand that, and a little research from other shops as well backed up the numbers, the problem was more of after hearing that I was not sure what route I wanted to go as far as sticking witht he LT1 or swapping platforms, I have since decided to stick witht he LT1, and now have to man up and put the money down, but that's the hardest part...

 

well what AI was saying was for the same amount of money put into an LS platform that it would take to put into the LT1, the LS would make about 100 more HP. And as stated above, it is mainly due to the head design, that is why the LS series stuff is faster out of the box, just compare mod for mod between LT and LS cars, yeah the LS mods are more expensive, but they also net more results, that's why bolt-on record LT cars are in the mid 11's while bolt-on only LS stuff is dipping into the 10's, buit their bolt-on are more expensive...

 

Fran, its good to see you in the LT1 section. Shame to see your still trying to sell that motor. You should give that up and just finish your car already. BTW: Thats a nice pic of Jeremy's car along with all those cherry Z06's in your sig. -Chris:

 

It should be an interesting project. I give you the kudos for going for it, but....