ok my 305 is beat, and its time for a new motor, i am going to build a 355 roller cam one peice seal block, and do a descent rebuild on it, heres what want to know..

can i use my flywheel?

can i run it with the current computer chip? and if i can would it be a good idea to put on some 22lb injectors?

or would the 19lb injectors be ok if i cranked up the fuel pressure?

what else do i have to change to make this work?

Im trying to minimize the cost because eventually the 406 will go in, but not until i get DFI and asuper ram or a mini ram and a 6 speed.

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87 IROC-z 305 TPI
Borg Warner T-5 fresh rebuild
10-bolt 3.73 Richmond gears rebuilt GM posi,
formerly BW 9-bolt w/3.45 gears(broke it)
Ported Plenum and Runners Homemade AFPR
ACCEL 8.8 wires, High output coil,and cap & rotor
Bosch platinum + 4 plugs
Ram Air w/ K&N filters,
MAF sensor screens removed, TB coolant bypass
Polyurethane tranny and torque arm mounts
No Cat, Dynomax Headers & catback w/custom tips
K&N oil filter,Mobil 1 synth,Factory Oil Cooler, Futura GLS Super Sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims.

406 siamesed TPI in progress

 

Flywheel, starter, etc. will work. I'm pretty sure if it's a mild 355, you can use 19# injectors.

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1986 IROC, fully loaded, Mini Ram'd 383, Art Carr 700R4, Accel DFI, 12 bolt rear, etc, etc......

 

19lbs should work. WHen I crank my 22lbs up to like 55PSI my car almost died it got so rich.. And I have big heads.

-- Joe

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/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters,
Summit 1.5 roller rockers, World Products Sportsman II 2.02/1.60 heads, Edelbrock TPI Intake,
Cloyes Double Roller timing chain, Mellings oil pump: 13.5 @ 100.23 MPH

Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs F/P gauge, A/F ratio gauge, MSD 6AL.

http://www.joesperformance.com

 

yes it will be a mild 355 so i guess the 19lb`s will work, sweet!

will the computer be content with the new motor? I plan on getting into prom burning, but i just want to be able to drive this thing to work and stuff, so can i use the stock chip temporarily?

also are the 305 and 350knock sensor the same?

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87 IROC-z 305 TPI
Borg Warner T-5 fresh rebuild
10-bolt 3.73 Richmond gears rebuilt GM posi,
formerly BW 9-bolt w/3.45 gears(broke it)
Ported Plenum and Runners Homemade AFPR
ACCEL 8.8 wires, High output coil,and cap & rotor
Bosch platinum + 4 plugs
Ram Air w/ K&N filters,
MAF sensor screens removed, TB coolant bypass
Polyurethane tranny and torque arm mounts
No Cat, Dynomax Headers & catback w/custom tips
K&N oil filter,Mobil 1 synth,Factory Oil Cooler, Futura GLS Super Sport tires 265/50/15 rear and 235/60/15 front mounted on 86 monte carlo SS rims.

406 siamesed TPI in progress

 

Hey man,

Well realisticly the spark curve, and injector pulses won't be in performance favor, but the car will run just fine.

I can't remember what the computer adjusts your timing to, but you can prolly advance the base on the dist to like 10` or so.

Eventually you (and I) should burn new proms cuz you're gonna wanna test the car out on a dyno.

As far as the fuel pulse, that should matter very minimally on a non SPFI car.

Accel makes a nice timing advance computer, that you (or I) can wire to play with spark curve. Its suposedly a "race only" box, but I imagine it wouldn't be a big deal to rig up a quick connect plug for track use.

-- joe

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/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters,
Summit 1.5 roller rockers, World Products Sportsman II 2.02/1.60 heads, Edelbrock TPI Intake,
Cloyes Double Roller timing chain, Mellings oil pump: 13.5 @ 100.23 MPH

Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs F/P gauge, A/F ratio gauge, MSD 6AL, MSD Redline selector.

http://www.joesperformance.com

 

My freind dropped a 350 300 horse motor in his 305TPI car and it ran fine with all the stock 305 stuff, but boy did it wake up when a good tuned chip was added, yeah I would bump FP up to 46 + and advance the base timing a tad.
Perry

 

hey man u are copying me... lol hahahaha

 

you can also use the rods from the 305 they are sometimes equiped with gm X rods that are stronger than normal rods. Look on the side of the rods and if they have and X on them use them they should be good for about 375-400 hp if checked and magnafluxed by a compitent machine shop.