Quote Originally Posted by Racprops View Post
OK Here is my build:

383 Specs:
Engine:


1990 SBC OE Roller Block - 30 over bore 4.030


Not decked (check by machine shop to be straight) but supposed to be .010" piston-to-deck clearance

Machined 400 crank with 5.565" 400 rods


Older KB hyper D-dish pistons (M9890-30) -I couldn't find this piston but they look identical to the KB102-030, so I'm guessing -18cc dish. Set Bought 2/12/2004


The piston top, combustion chamber, and intake and exhaust valve have all been Ceramic thermal barrier coated.


64cc (I think actually 65.3cc) Swirl port heads #14102193 1.94" / 1.5" valves

A felpro gasket that came in a rebuild kit with a 0.045" compressed thickness

Lifters: Rhodes Roller VMax lifters


Cam is from Oregon Camshaft #806 roller cam:
Adv duration: 265/270 @.006 206/213 @ 0.050": lift: 431"/428", LSA: 114, ICL: 110
9.25:1 static CR

Cam timing at .050 Intake open .7BTDC close 33ABDC 45 BBDC Exhaust open 45 BBDC and Closes at -12 ATDC this is by the spec sheet. Below these is a hand written note: -18 1/2 Degree overlap @.050. Cam lobe lift is listed as .275 intake and .285 Exhaust. Lobe center line: Intake 110 and exhaust 118.

Then there is another set of numbers lobe Diameter intake 1.542 over 1.267 and Exhaust1.529/1.244.

Running Rhoads V-Max roller lifters at 10% reduction so at low rpms she will be:
185.4/191.7 Lift 371.7/385.2 lobe sep. 114

1.5 ratio roller-tipped rockers Lift by 1.5 = .413/.428



TPI intake 87 Camaro with 165ECM with MAF

Stock cast iron exhaust manifolds considering headers…

343 rear gears


Rebuilt 4L80e out of a motorhome and a US Gear Dual Range overdrive (was Doug Nash) As a second overdrive - I have calculated a 1,600-1,800 RPM highway cruise @ 75 mph with the 4L80 in OD and the US Gear in OD with the 343 rear gears and18”Wheel and tires match factory tire wheel diameter.


Van will be able to run at 1600RPMs and be doing 70/80MPH.


Many tests have shown me factory V6 and V8s can get very good MPG at 1500 to 1800 RPMs, like 27 to 32 just by driving at those RPMs, speeds are 50 to 60MPH in their top gear.

Before the normal "It will not work" see pictures.


Question is ECM and Tuning,
Would I be correct in thinking your using a MAF 1227165 ECM?

I'm wondering if you are using an aftermarket 4L80E controller?

dave w