looking for 3500 cam regrind

[SappySE107]

I showed 291 peak at 6000 btw.

[Superdave]

These dyno programs are never perfect, you'll never really know untill you fire up the car and tune it on a real dyno.

[SappySE107]

Yeah, I was just giving you a number since you gave one. My header dimensions aren't accurate for his setup either:P If I put in something closer to what it should be, its 294. Besides, I have no idea what his true port dimensions will be after porting either.

[Superdave]

Yeah, I was just giving you a number since you gave one. My header dimensions aren't accurate for his setup either:P If I put in something closer to what it should be, its 294. Besides, I have no idea what his true port dimensions will be after porting either.

Same here..

"Expert guesswork"

[ForcedFirebird]

your dyno program is a little off, LOL Try finding the actual head flow sheets for the 3500 and plugging that into Desktop Dyno. When i put in all the numbers for mine i was going past 100% VE and making around 350 HP. That's with a complete ported top end, longtube headers and some other stuff.

All the literature I have read tells me an engine CAN have over 100%

Delta messed up my grind a little, i wish they had called me before they ground it.

what i asked for and what i got showed like 10 HP difference in desktop dyno.. lol

remember, roller cams are around double the cost of flat tappet cams. you get what you pay for with Ben's grinds.

I agree with both accounts.

Three rules to follow:

1. You get what you pay for

2. You can have fast, cheap or reliable with parts. Pick any two.

3. You can have good, fast or cheap with labor. Pick any two.

Ben, what you got for my situation? You know what I'm doing, and could use your help here. Do you grind flat tappet cams?

[merlot566jka]

1617, 1280 and 1386

best power, drivability, and lope with ls6 springs....which one would it be?

$650 is too much for a damn program! ill ask for your advise untill i see the need for a expensive program!!!

[SappySE107]

Are you going to machine the heads to clearance before coil bind? You will have to with the 1386, and its recommended for the 1280. You don't have to on the 1280, as I know it will run just fine but more clearance wouldn't hurt. That or run the comp 26986 springs that allow an easy .600 lift (coil bind is .660). The 1280 is being used on a street driven vehicle now (getting tuned).

[Superdave]

that'll give you an idea of the overlap.. more overlap = less idle vacuum / higher idle..




in that chart, 1 is around stock. the upper end of 2 is about max for a street driven V6..

[SappySE107]

Stock is 32.2. 109 ICL with 114 LSA on the 1386 is 52. Hmm, this gives me something to compare with on my turbo cams as well Thanks!

[merlot566jka]

ya ill cut don the upper side of the guide and maybe the spring seat....ive got some .050 locks too

[merlot566jka]

so the 1386 sounds like the winner. with the .040 head gaskets.

what size injectors does the 3500 have, and what will i need?

[Superdave]

ROL makes a great graphite gasket for the 3.4 iron head. .045 compressed which gives you about .035 between the piston and head. They're about $10 each at Autozone.


I'd start off with 32lb injectors.. the stock LX9's are 24lb M2's.

[merlot566jka]

where do i find the rest of the gaskets?

[Fiero11]

Superdave, I can't find your cam specs in the Stores tables.

[Superdave]

mine was custom.. back before Ben was selling his custom grinds

I got my top end gasket kit from gmpartsdirect.com P/N 12594816
for $139.63