chucksrt

Hey N.Neff,

I was tied up for a bit! I ordered ARP bolts that could be used with a windage tray but found that because it's a stroker the tray doesn't have enough clearance for the crank. I looked online but I couldn't find a tray for use with a stroker.

I did use the Engine RPM calc. and found that with my van the way it sits now will be at,
2000rpm=71.77mph
2500rpm=89.72mph

My goal is to get my best mpg at around 75mph. I still have to check the piston to deck clearance so I can get an accurate measure for compression.
CI Crank Rod Piston Boresize Type 58cc 64cc 70cc Inclcrp Inclcrprb Compl

383 9-350-3750-5700-L 2-ICR5700 FORGED 4.030 DISH 10.4 9.8 9.2 1-91105-1 1-91105 1-91105BIE

This is the info on the rotating assy.

I hope to have enough time to plug in the info to figure out the compression. Thanks for all of your great input!!

T.Neff

Chuck-the thing is with those advertized C/R's you don't know where they set the deck height.Kind of the reason for you to make it more about what yours is.Btw-I am Terry.

chucksrt

I just had to swap cylinder heads. The patriot performance heads I had on order, i found out that they did not work on vortec style manifolds. I upgraded them to the Edelbrock 60979 Aluminum heads. I also found that the cam that was originally recommended to me was wrong too, So I ordered another camshaft is more Tq based. I don't have the grind info yet (forgot to write the part# down). Once I get all of my ducks in a row I will hopefully be able to calculate the compression.

T.Neff

Chuck-with a EFI for tuning you need to be very careful with a cam selection for the duration and lope centers.Under 230 on the duration and something in the order of a lop center like 112 or 114.

chucksrt

I just called summit and got their part #CCA-08-300-8. . This is what they recommened for a vann like mine that is on the heavier side. What do u think! I will post the specs wheni get home. Thanks! Chuck
here are the specs.
Basic Operating RPM Range 1,000-5,000
Intake Duration at 050 inch Lift 206
Exhaust Duration at 050 inch Lift 210
Duration at 050 inch Lift 206 int./210 exh.
Advertised Intake Duration 262
Advertised Exhaust Duration 264
Advertised Duration 262 int./264 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.450 in
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.480 in.
Valve Lift with Factory Rocker Arm Ratio 0.450 int./0.480 exh.
Lobe Separation (degrees) 112
Grind Number CS 262H-R12

T.Neff

That does look like a very easy tune-able cam.What is you game plan for the EFI??.

chucksrt

For now I just picked up a newer style spider fuel injection assy. so I will build it with that for now and send the computer to pcmforless and have it tuned. My plan is to use what I have and have it dyno'd and send the dyno sheet along with the computer so he can program it using the dyno info and A/F info.

T.Neff

With a new build engine and EFI's-it is important to keep trial and error tunes to a minimum.Lean and over rich conditions can adversely effect those new parts long term.

Chuck I know this sounds out of the box normal procedures.I like to break in a new engine and set the rings with a trusted carb set-up first and then convert to the EFI.That way there is no risk to the new parts trying to settle in of a rich condition on the high end or the idle and then washing down those bearings/rings with gas.The same thing with a lean condition.

Sometimes it take more than one attempt to get the tune right.

T.Neff

Hey Chuck I didn't say it is not recommended to use a double roller timing chain on a hydro roller cam.FYI.

chucksrt

my engine uses the plastic timing chain cover.. so I am limited to using a single roller chain. I am having a hard time trying to figure out the compression ratio!
Bore 4.030
Stroke 5.7
compressed head gasket thickness ???
combustion chamber cc 64
dish piston -18cc
piston below deck .004

I have been playing around with the head gasket thickness until summit gets back to me with the proper thickness and it keeps coming up around 14:1??? that can't be right!

I used a level i had as a straight edge to measure how deep the piston was below the deck... maybe it is warped?