Don Terrill’s Speed-Talk

I did a back to back same heads Hot off the Dyno, in the 80s on a Show Room Stock IMSA L69 305 engine. 45 then the 30 The results acted as if i retarded the camshaft. Lost a couple down low, gained a couple upstairs. The averages were the same. This was with a .410 lift camshaft. What i did noticed ...

We made 670 on a 388 NA on race C12 fuel at 7300 W2 Oval port 200CC 305 intake 190 Exhaust 8% loss 283 cfm with Victor Intake.
1050 carb
13to1
270 270 108 .640 lift
Offset cast 360 crank 3.625
Aluminum rods
X Block 4.125

If your using the original two piece main seal block, do your self a favor and have the block machined for a One piece main seal if your using a aftermarket crankshaft.

Do you want it externally period correct or period correct right through? I'd go 383 cube with scat pro I beam rods & modern pistons with 1mm/1mm/2.8mm ring pack. 292 heads if you can find them & ported by someone who knows them well. Strip dominator intake 300-25. Old style 850 pumper holl...

plate.pngLike Steve K said.. They really don't need much. I just built a 383 with very mild head clean up work and with 12to1 and a cam that is 260 at .050 it make 625HP. 585 with the stock intake manifold. These heads flowed 325 non touched port with bowl clean up. I did test a set of the MPG bras...

plate.png Like Steve K said.. They really don't need much. I just built a 383 with very mild head clean up work and with 12to1 and a cam that is 260 at .050 it make 625HP. 585 with the stock intake manifold. These heads flowed 325 non touched port with bowl clean up. I did test a set of the MPG bra...

I worked for Roush in the late 70s Edger was his head porter and the Veins was to reduce turbulence at high lift. If I remember right the four speed cars got them and the Auto cars got the floors filled. I remember that we also used to Post the heads on the front and back to help to reduce blowing a...

I built one on the cheap side for my Iroc.
103523750571 Eagle Crank $290
Scat 5.700 Ibeam rods 3-ICR5700 $250.

I agree with Charlie, While its not the number that we're wanting to hear it's still OK. The round locks are usually the same wire diameter for .975, .980, .984 and .990 Lets say the wire is .072, the formula for the groove dia. is: pin diameter plus .072 plus .010=1.057 Would be different for .990...

I agree with Charlie, While its not the number that we're wanting to hear it's still OK. The round locks are usually the same wire diameter for .975, .980, .984 and .990 Lets say the wire is .072, the formula for the groove dia. is: pin diameter plus .072 plus .010=1.057 Would be different for .990...

I am repairing a Mess of a 428 CJ engine. The engine was already built but never ran. I have never seen something this bad before.,but I won't go there. I believe he is a member here. Anyway The last problem that I found is the Piston to Pin Lock Clearance is .042 Autotech Pistons with wire lock and...

MadBill wrote: ↑Wed Jan 29, 2020 8:42 pm Should be ~ 3300#.

Just put mine on the scales. 89 Iroc T-Top Loaded Half tank of fuel . No driver. 3293Lbs

Thanks for the reply's. The Clevites are .005 thicker than the non coated and ACLs are a full.001 thicker than the Clevite.

Has anyone used Half Coated and Half Non Coated bearings to set clearance??

What a cool story , I love the Rallye 350 cars. Thanks for sharing.