97BBlackZ

Or you could take the ricer way and spend 1k on stickers and say they add xxx+hp

and then make up excuses everytime someone wants to race you.

TIMEBANDIT

I am new to this forum but I had to post this. I have built many LT1's in the 500 to 600 hp range and when you get to the 700+ range the block just wont hold up. We have tried everything including Diamond and Callies main caps. If you build it above 650 and run it any length of time you will see cracking in the main cap web area. If you want to do it here is how we have built several.

1800 for Motown raised cam block 4.250bore x 4.000stroke = 454
1850 callies crank
1200 oliver hbeam rods
760 Venolia blower pistons 8.75
2150 AFR heads
3000 Cam, rockers, gear drive,fuel injectors,pump, tb,etc
1100 stand alone ECU
4000 whipple blower and intake kit.
15860 total

788 hp at 6200 rpm
712 tq at 5500 rpm

Mindgame

That's nice.... not exactly an LT1 though is it?

Yep, with the method Fred mentions (blower nitrous) you don't need the alter-angle heads. Just alot of the un-natural stuff makes it a bit easier.
If you want that n/a then you're in for a real treat cause it aint gonna be a "driver" that gets good gas mileage or any of that jazz. I expect you should stick to something with a blower and do alot of research cause the "all you need" kits aren't "all you need" to do the job correctly.

Good luck

-Mindgame

WhoomWhaatWhaah

Hey TIMEBANDIT do you have a web site?

WhoomWhaatWhaah

where can i find that motown block. Is the dart m block good or a 400 rocket block from www.sdpc.com

OldSStroker

Welcome to the Forum, TIMEBANDIT.

You will find an varied and interesting cross section of ages, personalities and egos on Advanced Tech. It's almost as varied as the professions represented.

Where in LA?

Mindgame

Whoom,

Are you building this yourself or is someone doing it for you?

The rocket block is not something you want to mess with if you don't have plenty of money and/or experience with it. It has its own specific needs.
The Motown and Dart blocks would be a good foundation and alot more standard sbc stuff works with them. Before you rush out and bore your Motown to 4.25" as was discussed earlier, just keep in mind that you'll have about .200 between the bores..... forget getting too much more use out of that block.

-Mindgame

WhoomWhaatWhaah

I will have the block professionally done

SStrokerAce

Like everyone on here said. $20K for just the engine will get you there. $16K was just the parts, and asking basic stuff about the Motown Block or a Rocket Block probably means you shouldn't be putting it all together IMHO. There are guys on here who can build there own motors in that power range, but they know alot of what they are talking about. 700hp doesn't just happen and stay together.

Bret

WhoomWhaatWhaah

I thinking more like 750rwhp running full boost (switch supercharger pulley) and nitro. Then when not at the track the boost could be reduced to save gas.

RacinLT1

Also,going to a standard style SBC opens up another can of worms for a 4th gen. You have lose the stock computer,put a standard distributer in,and go full standalone injection.

Now i noticed you live in California,wont a 750HP "streetable" lt1 be almost impossible to get past the California smog ****'s (aka CARB)? more food for thought.

Mindgame

IMO, if you're serious about this then the Motown would be the engine to go with. It comes clearanced for the longer swingarm (pan rails and bores) so you'll need to do very little extra. Not to mention, that block has some beefy bulkheads! Definitely the way to do a big stroke small block.

Then you just need to let the cam grinder know what you're building so they can put the lobe centerline where it needs to be for adequate rod-to-cam clearance. No raised cam, so this is still a problem area. A little doctoring of the connecting rod will also help.

You need some boost and as Racin mentioned.... then you gotta get past the smog police......

-Mindgame

TIMEBANDIT

1st of all thanks for the welcome.
2nd I dont have a web site but we build engines for a local race team I.E chevy sponsered.
3rd you can buy the motown with raised cam which will help with the clearances.
4th The key to keeping it together is a good forged crank and rods..... Use Callies or Cola cranks and oliver or Manely rods
5th I know a lot of guys like the noise of some of the other superchargers. But we have found in long duration races the reliability of the whipple is unmatched and we have tried everything. yes I know its to quiet hehehe Can I say sleeper.
6th Dont worry about the runner size on the largest AFR heads they are still smaller than the smallest bbc heads. this means huge amounts of torgue way down low. ------------ tq
7th keep your rpms under 6500 and it will last we built one that has 62,000 miles on it right now in a 69 camaro that has a best time of 9.66 at 148.8mph on slicks and is driven by my daughter.
As a matter of fact she shamed me the last time we had a grudge race but told me latter it would be ok hehehehe.
8th It can and will pass emissions testing with some good tuning. You will need 2 fuel maps one for racing and one for the test hehehe.

got_hp?

is she single? heheh............girls with 9 sec cars are hot.

96Z28SS

You can get 700+rwhp like Injuneer said with a blower.
Vortech396 hangs out in the New England Section.
New England Dyno and Tuning and Quest Racing built his motor
on the engine Dyno it made 840hp with pump gas and with 100 octane it made 925 with only a vortech t-trim.

http://96silverz.cz28.com/dyno.htm