I need timing/jetting help for tunnel ram
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Junior Member
Joined: Sep 2006
Posts: 44
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Car: S10
Engine: 383
Transmission: th 400
Axle/Gears: Stocker 10 bolt w/4:11's
I need timing/jetting help for tunnel ram
I just bolted in my trans. and did some preliminary wiring. Although I had this car running but not moving, I figure I will need to fine tune it but have NO experience with auto tuning(though I am well versed with mx bikes so I have a solid background when it comes to jetting for atmospheric conditons, race fuel vs pump gas, etc...) For the brief period I had my car running with NO tuning it ran great-even with two fours I was unable to get to bog by tromping on the gas. This was timing it by ear and stock carb settings. Without furhter BS my emgine consists of:
1978 4 bolt main 350 block bored .030 over with a stoker crank (3.750)
12.5:1 pistons
Lunati 246/246 @.050, 108 LSA, .548" lift
Weiand tunnel ram with two Holley 450 cfm 4160's
Trickflow 23 degree alum heads, 2.02 valves, ported, bowl blended, gasket matched(I think, the machine shop refused to tell me what they did after requesting $450 for party money)
Hooker 1 3/4 super comps with dumps
TH400 with a 4000 stall and 4:10's in 'er
Stocker tires for now
I know its a long post but theres gotta be some techies in here just waitin for a thread like this.
Like before I'm new to the auto jetting and new some direction and starting points. Any help is greatly appreciated. BTW I have some stick shift parts left over if anyone is needing some
1978 4 bolt main 350 block bored .030 over with a stoker crank (3.750)
12.5:1 pistons
Lunati 246/246 @.050, 108 LSA, .548" lift
Weiand tunnel ram with two Holley 450 cfm 4160's
Trickflow 23 degree alum heads, 2.02 valves, ported, bowl blended, gasket matched(I think, the machine shop refused to tell me what they did after requesting $450 for party money)
Hooker 1 3/4 super comps with dumps
TH400 with a 4000 stall and 4:10's in 'er
Stocker tires for now
I know its a long post but theres gotta be some techies in here just waitin for a thread like this.
Like before I'm new to the auto jetting and new some direction and starting points. Any help is greatly appreciated. BTW I have some stick shift parts left over if anyone is needing some
A place to start, k give this a go... 58 jets in the primaries and a metering plate equivalent to 70 jets in the secondaries. Timing 32-35 total, and set the back four linkage to come in late. Good luck and have fun!!
Thread Starter
Junior Member
Joined: Sep 2006
Posts: 44
Likes: 0
Car: S10
Engine: 383
Transmission: th 400
Axle/Gears: Stocker 10 bolt w/4:11's
Will do- gettin my driveshaft built today. Hopefully I can get this fugger on the road and wrapped around a phone pole b/f winter sets in ...
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