Hello everyone. Well all the parts for the car have been ordered (deployed right now) I am new to EFI tuning and I am sure I will be a needy one. If there is anyone in the Wisconsin area who would like to lend a hand when I come home in a few months that would be great.
I was going to keep the 305 but hey... Lets just go 350 and get it done with.
The list so far is:
EBL flash on the way..
46MM TBI, 1.6 roller rockers, TPI fuel pump, (have 14 PSI spring but I know I will be changing that to a 18 PSI and larger injectors) MSD coil and wires, Shorty plugs, Headers (hooker2460's) and 3" full exhaust, 3.73 gears and locker. 195* fan switch and 180* stat.
I wont get in to the suspension and brakes, every part is waiting at the house.
The engine plan is a 350 4 bolt balanced (truck TBI roller) with flat top pistons, Stock crank and rods. Stock oil pump (no need for high volume) new roller lifters and pushrods also, trick flow heads TFS 30400007 62 CC chambers 195CC intake, good for .600 lift 202 intake valves ect..
cam shaft:
Comp Cams#249-08-464-8

XFI Hydraulic Roller Camshaft
Small Block Chevy 305/350 1987-98 Lift: .550"/.546" With 1.6 Rockers
Duration: 252°/264°
Lobe Separation Angle: 113°
RPM Range: 1000-5000

The next question is Intake... I have been reading that the TBI edle Intake is not that much better then the stock one. Should I go with a carb EGR intake and use a plate or just stick the stock one on there. The cam shaft is rated for the intake RPM range. this engine wont see over 5000 RPM. I know it will choke it a bit but there has to be something said for ez of build.
Thank you guys (and I'm sure ladies also) For the huge amount of help you have been on my build of this car. 12 months is a long time to be away from home with nothing to look forward to, hence the building of the Camaro.

 

An adapter will work on a carb manifold. Do not use air gap.

I would locate a holley projection dual plane TBI manifold rated to 6500 rpms. Has EGR.

where in WI are you?

 

You may want to double-check the use of 1.6 ratio rockers. The cam was designed for 1.5. If you were not using fuel injection there wouldn't be a problem.

 

Small Block Chevy 305/350 1987-98 Lift: .550"/.546" With 1.6 Rockers


Think I am good with the rockers.
And I live just out side of madison but I will be building it at my mom and dad's in Madison. Pop likes to tinker too.

 

I live Waukesha but am at my seasonal mostly every weekend Spring-Fall at Fox Lake, WI should you need some help.

 

What truck 350 has roller lifters before '96? I thought they were all flat-tappets until '96. If this was a flat-tappet engine, be wary of the lifter bores which may not accept roller hydraulic lifters due to a machined step in the lifter bore. (The lifters will drop right in...and create a massive internal oil leak.)

 

Starting 1986 GM produced 350 block which has provisions for roller camshafts, but most of them were equipped with flat tappet (i.e. non-roller) cams. 350 cid/5.7L flat tappet blocks are casting numbers:

• 10243880 (5.7L Vortec engine)
• 14011148
• 14088526
• 14093638

Trucks used flat tappet, while cars were equipped with roller cams (Y, F, B lines)

//RF

 

My uncles 94 Chevy 1500 350 that he bought new off the dealership lot in 94 had a hydraulic roller cam and numerous mid 90s 305 Vans I have run across had them.

 

what injectors are you running. you'll need a lot of fuel to feed that thing.

 

I have simiilar heads(Edel RPM 64cc) and a larger cam(224/230@.05 114 lsa). NA I was at 20 lbs with 75 lbs injectors(late BB). Consider "fuel injector connection". VAFPR is a good idea.

 

He is only going to run it to 5,000 rpm, the only time I have experienced the need for huge injectors is reving over 5,500 and upwards to 6,500.

 

I dont like to run my engines past 5K. I dont drag it, and if I do want to get silly on the street 5K RPM is a good shift point. I know I know but it makes peak HP at 5230 (or pick a figure) I have not blown a engine sense High school. A engine will only take so many hard pulls and high revs for so long. Like I was told in the military.. Dont use up your truck before you get in the fight.
As injector size goes I am starting with the stock units and going from there. I know I will need larger ones but one step at a time. I have found if you do one thing at a time and do it well it all works out in the end.

 

I figure anything under the 6,400 rpm redlimit of the LT4 is good, provided you engine is built correctly, is properly balanced, has ARP rod bolts and good valve springs.

 

I found a set of 187 58cc heads with 202 SS valves cut in to them for 500 to the door all redone.
I think I am going to go this way with the heads. (just need to figure out the quench so I can get .040. Like I stated before I do not plan on going past 5000 when I am messing around. I got a set of 68 PPH Injectors. I will start out at 14 PSI and go up from there. The TPI pump will flow as much as I need. The engine parts have changed a little (different cam not as much lift) but a tad more duration. 512 lift with 270* at 0. Camquest is showing 332 HP with this combo. 3K for all the engine parts for 325 HP (ish) is not that bad of a deal. Still use pump 92 oct gas and have some good low mid pulling power.... what you want from the stop light.

I should state 3K for a drop in turn key engine. All sensors, dizzy, intake, serp asm, tin, everything.

 

EBL on the way. Can not wait to dig in to that. I am going to learn on the stock engine before I drop in the 350 with all the goodies.

 

I know what you mean with the low-end power. I recently swapped my stock LT4 cam for a custom grind comp based off the 258/262 Extreme 4x4 grind. It is 258/262 @ .006, 206/210 @ .050, .488/.488 w/1.6:1 rocker and 110* LSA on a 106* ICL. Even with a 2,600 rpm stall S10 converter it is much more fun to drive. It runs very good for 6,200 lbs with only 3.42s in the rear end.

 

I know it has been some time but I'm back in the country for good now.
I opened up my heads after they had been sitting at my mom and dads for over a year. The heads look really nice. 202 SS valves, screw in studs .550 lift springs.

 

One more pic

 

Glad to hear you're back at it! I look forward to following this project, particularly the EBL tuning.

 

my $100.00 score. They came with a good hood that is at the body shop getting a little paint.