402 Advice
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402 Advice So I'm about to start gathering parts for my 402 build. Parts with * already own.
Parts list:
Brand new Ls2 block *
Eagle crank*
Scat rods
Pistons - Diamond -14cc dish *
Comp cam 223-231 .610"-.617" 115+4*
799 heads* - will be sent to TEA for their stage 2 porting
Btr .650 spring kit*
Morel 5315 lifters*
Ls2 trays*
Upgrade turion in stock rockers
10296 oil pump*
Fast 92/92 combo*
1 3/4 headers*
I know the cam is small , most likely get with Martin for a better cam.
Car is 95% street , dd during the summer , don't want a real choppy idle some lope okay.
Parts list:
Brand new Ls2 block *
Eagle crank*
Scat rods
Pistons - Diamond -14cc dish *
Comp cam 223-231 .610"-.617" 115+4*
799 heads* - will be sent to TEA for their stage 2 porting
Btr .650 spring kit*
Morel 5315 lifters*
Ls2 trays*
Upgrade turion in stock rockers
10296 oil pump*
Fast 92/92 combo*
1 3/4 headers*
I know the cam is small , most likely get with Martin for a better cam.
Car is 95% street , dd during the summer , don't want a real choppy idle some lope okay.
Last edited by totalchaos; Jul 29, 2014 at 10:58 PM.
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From: Alberta , Canada
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So I read the Hot Rod mag article and it peaked my interest. Would a 3600 stall be good enuff for this motor. Would turned down LS3 valves be a good choice in the build. The car will see nitrous every now & then.
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From: Studewood/Acres-Homes TX.
stall would be right @ the point of something.....
1st we need the RPM / gear/ tire / trans / & car WT. to discuss stall and which is as stated is intended fort 95 percent street.
Parts wise your good....
1 ??? with -15 pistons what is your compression with your heads ported & milled.
So you really want something strong and take a hit of Dope - NOS and be a DD...
Correct.
1st we need the RPM / gear/ tire / trans / & car WT. to discuss stall and which is as stated is intended fort 95 percent street.
Parts wise your good....
1 ??? with -15 pistons what is your compression with your heads ported & milled.
So you really want something strong and take a hit of Dope - NOS and be a DD...
Correct.
Thread Starter
TECH Apprentice
iTrader: (5)
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From: Alberta , Canada
stall would be right @ the point of something.....
1st we need the RPM / gear/ tire / trans / & car WT. to discuss stall and which is as stated is intended fort 95 percent street.
Parts wise your good....
1 ??? with -15 pistons what is your compression with your heads ported & milled.
So you really want something strong and take a hit of Dope - NOS and be a DD...
Correct.
1st we need the RPM / gear/ tire / trans / & car WT. to discuss stall and which is as stated is intended fort 95 percent street.
Parts wise your good....
1 ??? with -15 pistons what is your compression with your heads ported & milled.
So you really want something strong and take a hit of Dope - NOS and be a DD...
Correct.
If I figured it out right my compression 11.3.1. 60cc cambers , .040 gasket, and 0 deck height.
yes want something strong , nitrous will rarely be used.
Car will be getting a MWC Fab 9" , Viking coilovers.
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Martin how do you feel about LSR series of cams , concerning valvetrain life . Not sure if remember , but we talked about a cam for my ls1 awhile ago. The goal is still the same just a 402 now.
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From: Studewood/Acres-Homes TX.
The main thing is @ what RPM does the engine start 2 make TQ & what is my RPM @ max HP. Ok me 4 instance I got a 3200lbs Malibu 3.91 rear gear and 4l80e trans with a single disc 4000 stall. The engine could peak @ 7500 or 72-7300 rpm depending on stage1 or stage 2 port work 4 the 823# castings.. TQ is your friend and a stall just helps put the engine @ the RPM for max TQ. Ok so FRANKENSTIEN has a program that made 757hp with a 414 Ls3 stage 2 port. The stage1 made 693hp with a 408 hyd roller & FAST intake but @ 6900. The 1st was a solid roller 257/268 .73? lift with Vic Jr intake etc... My cam is 256/270 .757 lift. and same intake. I had the choice of losing HP to get some mid and low end TQ with the stage1. If I were doing e85 stage 2 would look alot better. either 1 will get the # I set to get. The ??? is @ what RPM is the engine most effective and how often will your engine C the max RPM... A good trans cooler matched 4 your car will help keep things cool.
I agree that a 4000 stall if built by the right hands can drive very well. A lot of guys are surprised when I recommend 3800-4400rpm stalls for the majority of the combo's we build.
We use FTI for our lock up converters and whatever they do at that shop down in Florida works damn good. I just tell them the RPM's where peak HP/TQ are made, estimated engine output at those RPM's, RPM ceiling of the engine(shift point), vehicle weight, rear gear ratio and tire size being used.
Depending on if it's a street car or race car I will tell them that it needs to drive nice and tight on the street for the customer, or that how it drives is of no concern. I've never been disappointed with what they build given that information.
Hey man 
Just for some comparison info, I had my 402 at ~11.2:1 compression, kooks longtubes, borla exhaust, did both 4L80 w/Circle D 4000 stall and 4L65E w/TCI 3800 converters, and a 242/248 .611/.619 114 LSA Comp cam. The stall was good for street driving since you still have the TCC lockup. My only issue with it was that I think the cam was a little agressive for street driving. Under 950ish rpm's my vacuum sucked for the brakes. And the car was LOUD. It did make 500rwhp/450rwtq on the dyno though.
Just for some comparison info, I had my 402 at ~11.2:1 compression, kooks longtubes, borla exhaust, did both 4L80 w/Circle D 4000 stall and 4L65E w/TCI 3800 converters, and a 242/248 .611/.619 114 LSA Comp cam. The stall was good for street driving since you still have the TCC lockup. My only issue with it was that I think the cam was a little agressive for street driving. Under 950ish rpm's my vacuum sucked for the brakes. And the car was LOUD. It did make 500rwhp/450rwtq on the dyno though.